Re: [WISPA] Any thoughts on a decent cache server

2008-07-11 Thread David E. Smith
 What I'd LOVE to figure out how to set up is a spoke and hub cache system.

Squid (and probably other caches) support something similar, in the form
of parent and child caches. It sorta works backwards from what you
described, but the net benefit would be similar.

Basically, you set up caches at your POP locations, each of which is
configured to use a bigger cache in your NOC as their parent cache. (Of
course, you have to set up suitable firewalling at every tower, to
redirect traffic from that POP's customers to the local cache.)

Customer types in ebay.com, goes to their local cache. If the
information they want isn't there, that cache checks with the big cache in
your NOC. If it also doesn't have that page, it fetches it from the public
Internet, and passes it on down.

It's not a push system, but that's probably alright. I'm not sure how well
a push system would work anyway. Anything like, say, the monthly crop of
Windows Update downloads, they'd get spread out to the individual caches
quickly enough anyway.

David Smith
MVN.net





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Re: [WISPA] Any thoughts on a decent cache server

2008-07-11 Thread Dennis Burgess
You can do this as well with Mikrotik.  

MT is very, very simple.  We have seen avg savings of between 20-40%.  
With 25-30% being avg.  Also, you can specify what sites you want to 
cache, typically done by IP, but you could also say that you only want 
to cache sites that are on different areas etc if you got the IP ranges 
that you wanted to use.

Something else, is that you can specify a bit for the cache hit data.  
This means, you can throttle data that comes from your cache differently 
than the customers standard package!  So, data that comes from your 
cache, maybe goes at full wireless speed etc.  

We usually drop in either a 80 gig or 250 gig SATA2 drive into our 
PoweRouter 732s.  If they have a large customer base, we drop in 2 gig 
of ram just to be on the safe side. 

--
* Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer
Link Technologies, Inc -- Mikrotik  WISP Support Services*
314-735-0270
http://www.linktechs.net http://www.linktechs.net/

*/ Link Technologies, Inc is offering LIVE Mikrotik On-Line Training 
http://www.linktechs.net/onlinetraining.asp/*



David E. Smith wrote:
 What I'd LOVE to figure out how to set up is a spoke and hub cache system.
 

 Squid (and probably other caches) support something similar, in the form
 of parent and child caches. It sorta works backwards from what you
 described, but the net benefit would be similar.

 Basically, you set up caches at your POP locations, each of which is
 configured to use a bigger cache in your NOC as their parent cache. (Of
 course, you have to set up suitable firewalling at every tower, to
 redirect traffic from that POP's customers to the local cache.)

 Customer types in ebay.com, goes to their local cache. If the
 information they want isn't there, that cache checks with the big cache in
 your NOC. If it also doesn't have that page, it fetches it from the public
 Internet, and passes it on down.

 It's not a push system, but that's probably alright. I'm not sure how well
 a push system would work anyway. Anything like, say, the monthly crop of
 Windows Update downloads, they'd get spread out to the individual caches
 quickly enough anyway.

 David Smith
 MVN.net




 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-11 Thread Travis Johnson




Hi,

Are you somehow redirecting traffic to the MT box, or having all the
traffic go through the box?

Cache hit rates are going to depend on the size of the network... a
250GB drive would only cache about 4 hours of http traffic on my
network... hit rates would be less than 5% I would guess. 

I've also heard MT doesn't work very well doing caching. Has this
changed since v3 was released?

Travis
Microserv

Dennis Burgess wrote:

  You can do this as well with Mikrotik.  

MT is very, very simple.  We have seen avg savings of between 20-40%.  
With 25-30% being avg.  Also, you can specify what sites you want to 
cache, typically done by IP, but you could also say that you only want 
to cache sites that are on different areas etc if you got the IP ranges 
that you wanted to use.

Something else, is that you can specify a bit for the cache hit data.  
This means, you can throttle data that comes from your cache differently 
than the customers standard package!  So, data that comes from your 
cache, maybe goes at full wireless speed etc.  

We usually drop in either a 80 gig or 250 gig SATA2 drive into our 
PoweRouter 732s.  If they have a large customer base, we drop in 2 gig 
of ram just to be on the safe side. 

--
* Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer
Link Technologies, Inc -- Mikrotik  WISP Support Services*
314-735-0270
http://www.linktechs.net http://www.linktechs.net/

*/ Link Technologies, Inc is offering LIVE Mikrotik On-Line Training 
http://www.linktechs.net/onlinetraining.asp/*



David E. Smith wrote:
  
  

  What I'd LOVE to figure out how to set up is a spoke and hub cache system.

  

Squid (and probably other caches) support something similar, in the form
of parent and child caches. It sorta works backwards from what you
described, but the net benefit would be similar.

Basically, you set up caches at your POP locations, each of which is
configured to use a bigger cache in your NOC as their "parent" cache. (Of
course, you have to set up suitable firewalling at every tower, to
redirect traffic from that POP's customers to the "local" cache.)

Customer types in ebay.com, goes to their "local" cache. If the
information they want isn't there, that cache checks with the big cache in
your NOC. If it also doesn't have that page, it fetches it from the public
Internet, and passes it on down.

It's not a push system, but that's probably alright. I'm not sure how well
a push system would work anyway. Anything like, say, the monthly crop of
Windows Update downloads, they'd get spread out to the individual caches
quickly enough anyway.

David Smith
MVN.net





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Re: [WISPA] Any thoughts on a decent cache server

2008-07-11 Thread Dennis Burgess
Keep in mind that if you move 250 gig, that does not mean that it will 
cache that. CNN is an exaxmple that has a cache time of 0 seconds, so it 
never caches it.That type of thing.I have never had a major 
issue with MT caching services.  Works VERY good. 

--
* Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer
Link Technologies, Inc -- Mikrotik  WISP Support Services*
314-735-0270
http://www.linktechs.net http://www.linktechs.net/

*/ Link Technologies, Inc is offering LIVE Mikrotik On-Line Training 
http://www.linktechs.net/onlinetraining.asp/*



Travis Johnson wrote:
 Hi,

 Are you somehow redirecting traffic to the MT box, or having all the 
 traffic go through the box?

 Cache hit rates are going to depend on the size of the network... a 
 250GB drive would only cache about 4 hours of http traffic on my 
 network... hit rates would be less than 5% I would guess.

 I've also heard MT doesn't work very well doing caching. Has this 
 changed since v3 was released?

 Travis
 Microserv

 Dennis Burgess wrote:
 You can do this as well with Mikrotik.  

 MT is very, very simple.  We have seen avg savings of between 20-40%.  
 With 25-30% being avg.  Also, you can specify what sites you want to 
 cache, typically done by IP, but you could also say that you only want 
 to cache sites that are on different areas etc if you got the IP ranges 
 that you wanted to use.

 Something else, is that you can specify a bit for the cache hit data.  
 This means, you can throttle data that comes from your cache differently 
 than the customers standard package!  So, data that comes from your 
 cache, maybe goes at full wireless speed etc.  

 We usually drop in either a 80 gig or 250 gig SATA2 drive into our 
 PoweRouter 732s.  If they have a large customer base, we drop in 2 gig 
 of ram just to be on the safe side. 

 --
 * Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer
 Link Technologies, Inc -- Mikrotik  WISP Support Services*
 314-735-0270
 http://www.linktechs.net http://www.linktechs.net/

 */ Link Technologies, Inc is offering LIVE Mikrotik On-Line Training 
 http://www.linktechs.net/onlinetraining.asp/*



 David E. Smith wrote:
   
 What I'd LOVE to figure out how to set up is a spoke and hub cache system.
 
   
 Squid (and probably other caches) support something similar, in the form
 of parent and child caches. It sorta works backwards from what you
 described, but the net benefit would be similar.

 Basically, you set up caches at your POP locations, each of which is
 configured to use a bigger cache in your NOC as their parent cache. (Of
 course, you have to set up suitable firewalling at every tower, to
 redirect traffic from that POP's customers to the local cache.)

 Customer types in ebay.com, goes to their local cache. If the
 information they want isn't there, that cache checks with the big cache in
 your NOC. If it also doesn't have that page, it fetches it from the public
 Internet, and passes it on down.

 It's not a push system, but that's probably alright. I'm not sure how well
 a push system would work anyway. Anything like, say, the monthly crop of
 Windows Update downloads, they'd get spread out to the individual caches
 quickly enough anyway.

 David Smith
 MVN.net




 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-11 Thread Matt
 The people that we had the most problems with were web designers who's
 sites were cached and they couldn't easily see their changes.
 We always told then to add no cache to their sites.

Thats an easy one to fix.  Tell them to press [CTRL] F5.  Thats all it
takes on virtually any standards compliant cache.  The real pain is
when shopping carts or the like do not work.

We have had far better success having Mikrotik redirect/DST-NAT too
Squid then using the Mikrotik cache.  Far fewer websites with issues.
Running the cache on Mikrotik really shot the CPU load up on the
Mikrotik as well.  Strange the CPU load on the box running Squid is
barely anything.

In the process of upgrading our network and bandwidth.  Gonna try the
Mikrotik cache again to see if its improved any.  Its so much simpler
doing it with an inline Mikrotik box.

Matt



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Re: [WISPA] Any thoughts on a decent cache server

2008-07-11 Thread Matt Larsen - Lists
You can build a good squid box with lots of memory and fast hard drives 
and get good results.   The squid setup is also nearly infinitely 
tunable, as opposed to the ones in Mikrotik and StarOS which have a 
pretty vanilla configuration.   Being able to tune the cache parameters 
helps a lot, along with putting the cache directories on a separate hard 
drive and/or multiple ethernet cards to maximize the traffic flow.   I 
have also used caching servers during heavy bandwidth demand or outage 
times to offload some of my browsing traffic to cable or dsl connections 
at the edges of the network.

 From a deployment perspective, I have gotten the best results by 
letting any questionable customers bypass the caches.   95% of my 
customers are on 192.168.0.0/16 addresses, so we had a rule that 
directed the /16 network to the cache.   Customers with public IP 
addresses do not go through the cache.   That way, someone with a 
problem going through the cache would have to upgrade to a static IP so 
that they could bypass it.Relatively simple, and effective.

Matt Larsen
vistabeam.com

Matt wrote:
 The people that we had the most problems with were web designers who's
 sites were cached and they couldn't easily see their changes.
 We always told then to add no cache to their sites.
 

 Thats an easy one to fix.  Tell them to press [CTRL] F5.  Thats all it
 takes on virtually any standards compliant cache.  The real pain is
 when shopping carts or the like do not work.

 We have had far better success having Mikrotik redirect/DST-NAT too
 Squid then using the Mikrotik cache.  Far fewer websites with issues.
 Running the cache on Mikrotik really shot the CPU load up on the
 Mikrotik as well.  Strange the CPU load on the box running Squid is
 barely anything.

 In the process of upgrading our network and bandwidth.  Gonna try the
 Mikrotik cache again to see if its improved any.  Its so much simpler
 doing it with an inline Mikrotik box.

 Matt


 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-11 Thread George Rogato
I've been watching the internet tv for the past 9 months. CNN, FOX, NBC, 
etc all have their news online. It would be great if those were 
cachable. Just like on tv a lot of the news bits are over and over again 
and why should we have to keep paying each view.

The content providers like akamai, etc are valuable at this point.


Dennis Burgess wrote:
 MTs implementation is very simple. Not a whole lot to configure, but 
 thats what is great about it.  Also, if your network is moving 250 gig 
 every 4 hours, that don't mean everything will be cached.  ie. CNN has a 
 cache time of 0, so it won't be cached anyways. 
 
 --
 * Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer
 Link Technologies, Inc -- Mikrotik  WISP Support Services*
 314-735-0270
 http://www.linktechs.net http://www.linktechs.net/
 
 */ Link Technologies, Inc is offering LIVE Mikrotik On-Line Training 
 http://www.linktechs.net/onlinetraining.asp/*
 
 
 
 Travis Johnson wrote:
 Hi,

 Are you somehow redirecting traffic to the MT box, or having all the 
 traffic go through the box?

 Cache hit rates are going to depend on the size of the network... a 
 250GB drive would only cache about 4 hours of http traffic on my 
 network... hit rates would be less than 5% I would guess.

 I've also heard MT doesn't work very well doing caching. Has this 
 changed since v3 was released?

 Travis
 Microserv

 Dennis Burgess wrote:
 You can do this as well with Mikrotik.  

 MT is very, very simple.  We have seen avg savings of between 20-40%.  
 With 25-30% being avg.  Also, you can specify what sites you want to 
 cache, typically done by IP, but you could also say that you only want 
 to cache sites that are on different areas etc if you got the IP ranges 
 that you wanted to use.

 Something else, is that you can specify a bit for the cache hit data.  
 This means, you can throttle data that comes from your cache differently 
 than the customers standard package!  So, data that comes from your 
 cache, maybe goes at full wireless speed etc.  

 We usually drop in either a 80 gig or 250 gig SATA2 drive into our 
 PoweRouter 732s.  If they have a large customer base, we drop in 2 gig 
 of ram just to be on the safe side. 

 --
 * Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer
 Link Technologies, Inc -- Mikrotik  WISP Support Services*
 314-735-0270
 http://www.linktechs.net http://www.linktechs.net/

 */ Link Technologies, Inc is offering LIVE Mikrotik On-Line Training 
 http://www.linktechs.net/onlinetraining.asp/*



 David E. Smith wrote:
   
 What I'd LOVE to figure out how to set up is a spoke and hub cache system.
 
   
 Squid (and probably other caches) support something similar, in the form
 of parent and child caches. It sorta works backwards from what you
 described, but the net benefit would be similar.

 Basically, you set up caches at your POP locations, each of which is
 configured to use a bigger cache in your NOC as their parent cache. (Of
 course, you have to set up suitable firewalling at every tower, to
 redirect traffic from that POP's customers to the local cache.)

 Customer types in ebay.com, goes to their local cache. If the
 information they want isn't there, that cache checks with the big cache in
 your NOC. If it also doesn't have that page, it fetches it from the public
 Internet, and passes it on down.

 It's not a push system, but that's probably alright. I'm not sure how well
 a push system would work anyway. Anything like, say, the monthly crop of
 Windows Update downloads, they'd get spread out to the individual caches
 quickly enough anyway.

 David Smith
 MVN.net




 
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[WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Patrick Nix Jr.
In another attempt to light the bandwidth load we are going to setup a
cache server.  Any thoughts or suggestions on which one to use?

 

__

 

Patrick Nix, Jr.,

csweb.net

(918) 235-0414

http://www.csweb.net http://www.csweb.net/ 

E-Mail: [EMAIL PROTECTED]

 



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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread George
We used to have a caching server.
You may also want to check out akamai
They place their content servers at your noc so some content is closer 
to your customer. During dial up days we used both akamai and a squid 
caching server and it helped.
Haven't done it for our bb system but also are going there soon again.

George

Patrick Nix Jr. wrote:
 In another attempt to light the bandwidth load we are going to setup a
 cache server.  Any thoughts or suggestions on which one to use?
 
  
 
 __
 
  
 
 Patrick Nix, Jr.,
 
 csweb.net
 
 (918) 235-0414
 
 http://www.csweb.net http://www.csweb.net/ 
 
 E-Mail: [EMAIL PROTECTED]
 
  
 
 
 
 ATTENTION: This e-mail may contain information that is confidential in
 nature. If you are not the intended recipient, please delete this e-mail
 and notify the sender immediately. Thank you.
 
 
 
  
 
 
 
 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread David E. Smith
Patrick Nix Jr. wrote:
 In another attempt to light the bandwidth load we are going to setup a
 cache server.  Any thoughts or suggestions on which one to use?

I know this is the popular answer to everything on this list, but 
Mikrotik RouterOS has a decent, and dead-simple to use, proxy/cache 
package. The tricky part is probably finding the right place in your 
network to put it, and configuring firewall rules (so that Web traffic 
gets sent to the proxy/cache server), and even those aren't too difficult.

At least the old one was pretty good - my experience with it was 
probably four years ago, but at the time it worked well. Between then 
and now, I believe Mikrotik has written their own (previously it was 
just the Squid open-source package, with their pretty interface on top).

If you're comfortable with Linux, you can do it yourself, but the time 
you'll save is easily worth the low one-time cost of a RouterOS software 
license.

Whatever you use, make sure you know how to handle exceptions. Some 
Web sites just don't play well with being proxied. (One of our customers 
is a dealer for a major auto maker, and the proxy/cache system basically 
killed their whole business, as the stuff in Detroit just flat refused 
to function.) You'll want an easy way to test this sort of thing at your 
desktop, to try to reproduce weird customer calls - and there will be 
some doozies.

David Smith
MVN.net



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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Patrick Nix Jr.
So is it safer/better to avoid caching servers altogether?

__
 
Patrick Nix, Jr.,
csweb.net
(918) 235-0414
http://www.csweb.net
E-Mail: [EMAIL PROTECTED]
 

ATTENTION: This e-mail may contain information that is confidential in
nature. If you are not the intended recipient, please delete this e-mail
and notify the sender immediately. Thank you.


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of David E. Smith
Sent: Thursday, July 10, 2008 1:07 PM
To: WISPA General List
Subject: Re: [WISPA] Any thoughts on a decent cache server

Patrick Nix Jr. wrote:
 In another attempt to light the bandwidth load we are going to setup a
 cache server.  Any thoughts or suggestions on which one to use?

I know this is the popular answer to everything on this list, but 
Mikrotik RouterOS has a decent, and dead-simple to use, proxy/cache 
package. The tricky part is probably finding the right place in your 
network to put it, and configuring firewall rules (so that Web traffic 
gets sent to the proxy/cache server), and even those aren't too
difficult.

At least the old one was pretty good - my experience with it was 
probably four years ago, but at the time it worked well. Between then 
and now, I believe Mikrotik has written their own (previously it was 
just the Squid open-source package, with their pretty interface on top).

If you're comfortable with Linux, you can do it yourself, but the time 
you'll save is easily worth the low one-time cost of a RouterOS software

license.

Whatever you use, make sure you know how to handle exceptions. Some 
Web sites just don't play well with being proxied. (One of our customers

is a dealer for a major auto maker, and the proxy/cache system basically

killed their whole business, as the stuff in Detroit just flat refused 
to function.) You'll want an easy way to test this sort of thing at your

desktop, to try to reproduce weird customer calls - and there will be 
some doozies.

David Smith
MVN.net




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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Dennis Burgess
We have quite a few PoweRouter 732s running Caching on networks.  1000+ 
users in some cases.

--
* Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer
Link Technologies, Inc -- Mikrotik  WISP Support Services*
314-735-0270
http://www.linktechs.net http://www.linktechs.net/

*/ Link Technologies, Inc is offering LIVE Mikrotik On-Line Training 
http://www.linktechs.net/onlinetraining.asp/*



Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?

 __
  
 Patrick Nix, Jr.,
 csweb.net
 (918) 235-0414
 http://www.csweb.net
 E-Mail: [EMAIL PROTECTED]
  
 
 ATTENTION: This e-mail may contain information that is confidential in
 nature. If you are not the intended recipient, please delete this e-mail
 and notify the sender immediately. Thank you.
 

 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of David E. Smith
 Sent: Thursday, July 10, 2008 1:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 Patrick Nix Jr. wrote:
   
 In another attempt to light the bandwidth load we are going to setup a
 cache server.  Any thoughts or suggestions on which one to use?
 

 I know this is the popular answer to everything on this list, but 
 Mikrotik RouterOS has a decent, and dead-simple to use, proxy/cache 
 package. The tricky part is probably finding the right place in your 
 network to put it, and configuring firewall rules (so that Web traffic 
 gets sent to the proxy/cache server), and even those aren't too
 difficult.

 At least the old one was pretty good - my experience with it was 
 probably four years ago, but at the time it worked well. Between then 
 and now, I believe Mikrotik has written their own (previously it was 
 just the Squid open-source package, with their pretty interface on top).

 If you're comfortable with Linux, you can do it yourself, but the time 
 you'll save is easily worth the low one-time cost of a RouterOS software

 license.

 Whatever you use, make sure you know how to handle exceptions. Some 
 Web sites just don't play well with being proxied. (One of our customers

 is a dealer for a major auto maker, and the proxy/cache system basically

 killed their whole business, as the stuff in Detroit just flat refused 
 to function.) You'll want an easy way to test this sort of thing at your

 desktop, to try to reproduce weird customer calls - and there will be 
 some doozies.

 David Smith
 MVN.net


 
 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread David E. Smith
Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?

About 99% of your users won't notice, or know, or care, that you've got 
anything like that in your network. The savings in bandwidth (and, to a 
lesser extent, money not spent on bandwidth) can help you out of a tight 
spot. Just be aware that the last 1% of customers can get you into trouble.

David Smith
MVN.net



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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Bo Ring

When I was an ISP, that 1% got me in real trouble. They scream loudly.

On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:


Patrick Nix Jr. wrote:

So is it safer/better to avoid caching servers altogether?


About 99% of your users won't notice, or know, or care, that you've  
got
anything like that in your network. The savings in bandwidth (and,  
to a
lesser extent, money not spent on bandwidth) can help you out of a  
tight
spot. Just be aware that the last 1% of customers can get you into  
trouble.


David Smith
MVN.net



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inline: ctilogo200.jpg

Bo Ring
Account Manager
[EMAIL PROTECTED]
cell: 630-743-1162 • office: 312-205-2515
16W235 83rd Street, Suite A, Burr Ridge, IL 60527 • tel: 773.667.4585  
fax: 773.326.4641






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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Jim Patient
Not IMHO,

You can just bypass the caching server for sites that give you trouble.  
I've had to by pass 3 or 4 so far.  We only cache HTTP. One of our 
towers average bandwidth to the internet dropped from around 5Mbps to 
around 3Mbps and after 3 weeks up it has cached over 55GB.  Mikrotik 
also lets you bypass bandwidth queues for cached data so subs get the 
pages fast. 

We use a Powerouter 732 as the core router at this tower and have a 
250GB drive in it.  We first tried dropping a cheap box plugged into a 
532a but the CPU was hammered by the packets coming in one one 
interface, going out to the cache box, and coming back in the router, 
then going back out the interface connected to the radios.  Caching with 
the router itself has really helped a lot.

Jim
jeffcosoho.com

Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?

 __
  
 Patrick Nix, Jr.,
 csweb.net
 (918) 235-0414
 http://www.csweb.net
 E-Mail: [EMAIL PROTECTED]
  
 
 ATTENTION: This e-mail may contain information that is confidential in
 nature. If you are not the intended recipient, please delete this e-mail
 and notify the sender immediately. Thank you.
 

 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of David E. Smith
 Sent: Thursday, July 10, 2008 1:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 Patrick Nix Jr. wrote:
   
 In another attempt to light the bandwidth load we are going to setup a
 cache server.  Any thoughts or suggestions on which one to use?
 

 I know this is the popular answer to everything on this list, but 
 Mikrotik RouterOS has a decent, and dead-simple to use, proxy/cache 
 package. The tricky part is probably finding the right place in your 
 network to put it, and configuring firewall rules (so that Web traffic 
 gets sent to the proxy/cache server), and even those aren't too
 difficult.

 At least the old one was pretty good - my experience with it was 
 probably four years ago, but at the time it worked well. Between then 
 and now, I believe Mikrotik has written their own (previously it was 
 just the Squid open-source package, with their pretty interface on top).

 If you're comfortable with Linux, you can do it yourself, but the time 
 you'll save is easily worth the low one-time cost of a RouterOS software

 license.

 Whatever you use, make sure you know how to handle exceptions. Some 
 Web sites just don't play well with being proxied. (One of our customers

 is a dealer for a major auto maker, and the proxy/cache system basically

 killed their whole business, as the stuff in Detroit just flat refused 
 to function.) You'll want an easy way to test this sort of thing at your

 desktop, to try to reproduce weird customer calls - and there will be 
 some doozies.

 David Smith
 MVN.net


 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 
 
  
 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Kurt Fankhauser
I call that 1% the high-maintenance customers .

Kurt Fankhauser
WAVELINC
P.O. Box 126
Bucyrus, OH 44820
419-562-6405
www.wavelinc.com
 
 
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Bo Ring
Sent: Thursday, July 10, 2008 4:07 PM
To: WISPA General List
Subject: Re: [WISPA] Any thoughts on a decent cache server

When I was an ISP, that 1% got me in real trouble. They scream loudly.

On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?

 About 99% of your users won't notice, or know, or care, that you've  
 got
 anything like that in your network. The savings in bandwidth (and,  
 to a
 lesser extent, money not spent on bandwidth) can help you out of a  
 tight
 spot. Just be aware that the last 1% of customers can get you into  
 trouble.

 David Smith
 MVN.net





 WISPA Wants You! Join today!
 http://signup.wispa.org/




 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread George Rogato
The people that we had the most problems with were web designers who's 
sites were cached and they couldn't easily see their changes.
We always told then to add no cache to their sites.

But still it's a phone call and a discussion.


Kurt Fankhauser wrote:
 I call that 1% the high-maintenance customers .
 
 Kurt Fankhauser
 WAVELINC
 P.O. Box 126
 Bucyrus, OH 44820
 419-562-6405
 www.wavelinc.com
  
  
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of Bo Ring
 Sent: Thursday, July 10, 2008 4:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server
 
 When I was an ISP, that 1% got me in real trouble. They scream loudly.
 
 On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:
 
 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?
 About 99% of your users won't notice, or know, or care, that you've  
 got
 anything like that in your network. The savings in bandwidth (and,  
 to a
 lesser extent, money not spent on bandwidth) can help you out of a  
 tight
 spot. Just be aware that the last 1% of customers can get you into  
 trouble.

 David Smith
 MVN.net



 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/

 
 
 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

 Archives: http://lists.wispa.org/pipermail/wireless/
 
 
 
 
 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Tom DeReggi
I'd like to mention there could be other good benefits for caching.
For example, It can be beneficial to cache sites that are geographically far 
away.
The farther a site is away the more latency it has, and there fore the speed 
per session diminishes, based on the formula like  window size = bandwidth * 
delay.
.
  TCP throughput vs. window size for RTT=70ms Window Size  Theoretical max 
throughput  Realistic throughput
  8KB  0.9Mb/s  0.8Mb/s
  16KB  1.9Mb/s  1.8Mb/s
  32KB  3.7Mb/s  2-3.5Mb/s
  64KB  7.5Mb/s  3-7Mb/s
  128KB  15.0Mb/s  6-14Mb/s
  256KB  30.0Mb/s  10-25Mb/s
  512KB  59.9Mb/s  20-40Mb/s
  1MB  119.8Mb/s  30-60Mb/s
  2MB  239.7Mb/s  60-100Mb/s


What often occurs is that Window Size is fixed at the customer PC. So even 
if someone has a 100mbps connection, and can test 100mbps to their server 
across town 5 ms away, there speed is still severally limited to far away 
high latency sites.  Many PCs by default, don't enable window sizes above 
64k. (Although most newer XP/VISTA machines are now comming Registry 
optimized for automatic tuning of larger windows szies, so this isn;t a 
problem.)

So its not just about cost of long haul bandwdith, but also desire to 
deliver full speed to the consumer. By caching data locally, it enables the 
customer to access it at the full broadband connection speed.

But my point being, customers can get a much better perception of 
performance if the most common files to download were cached locally for 
retrieval.

What I'd be interested in learning more on is how to setup a caching server 
to selectively select what to cache based on latency to the content, or most 
common data, apposed to just caching everything. In otherwords, how to 
optimize the chance that the benefit of caching will outweigh the chances of 
getting troubles from caching.

Tom DeReggi
RapidDSL  Wireless, Inc
IntAirNet- Fixed Wireless Broadband


- Original Message - 
From: Bo Ring [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 3:07 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 When I was an ISP, that 1% got me in real trouble. They scream loudly.

 On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?

 About 99% of your users won't notice, or know, or care, that you've
 got
 anything like that in your network. The savings in bandwidth (and,
 to a
 lesser extent, money not spent on bandwidth) can help you out of a
 tight
 spot. Just be aware that the last 1% of customers can get you into
 trouble.

 David Smith
 MVN.net


 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 

 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

 Archives: http://lists.wispa.org/pipermail/wireless/








Bo Ring
Account Manager
[EMAIL PROTECTED]
cell: 630-743-1162 . office: 312-205-2515
16W235 83rd Street, Suite A, Burr Ridge, IL 60527 . tel: 773.667.4585
fax: 773.326.4641










 
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 http://signup.wispa.org/
 

 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Marlon K. Schafer
I don't know if it's better now, but when I tried to use MT as a cache it 
REALLY slowed things down.  Speeds were higher, but the time from click to 
page start went up a LOT.  So the internet FELT much slower.

I loved my old Cobalt CacheRAQ.  Wish I could find something like that 
again.  It worked very well and was really easy to configure, adjust.
marlon

- Original Message - 
From: David E. Smith [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 11:07 AM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 Patrick Nix Jr. wrote:
 In another attempt to light the bandwidth load we are going to setup a
 cache server.  Any thoughts or suggestions on which one to use?

 I know this is the popular answer to everything on this list, but
 Mikrotik RouterOS has a decent, and dead-simple to use, proxy/cache
 package. The tricky part is probably finding the right place in your
 network to put it, and configuring firewall rules (so that Web traffic
 gets sent to the proxy/cache server), and even those aren't too difficult.

 At least the old one was pretty good - my experience with it was
 probably four years ago, but at the time it worked well. Between then
 and now, I believe Mikrotik has written their own (previously it was
 just the Squid open-source package, with their pretty interface on top).

 If you're comfortable with Linux, you can do it yourself, but the time
 you'll save is easily worth the low one-time cost of a RouterOS software
 license.

 Whatever you use, make sure you know how to handle exceptions. Some
 Web sites just don't play well with being proxied. (One of our customers
 is a dealer for a major auto maker, and the proxy/cache system basically
 killed their whole business, as the stuff in Detroit just flat refused
 to function.) You'll want an easy way to test this sort of thing at your
 desktop, to try to reproduce weird customer calls - and there will be
 some doozies.

 David Smith
 MVN.net


 
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 http://signup.wispa.org/
 

 WISPA Wireless List: wireless@wispa.org

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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Marlon K. Schafer
No way.  I'm pretty sure I'm gonna put one on again.  Back when I used one 
it saved me 25% or so on bandwidth.  It also made the internet FEEL faster.

I want to cache MS updates, youtube and expecially MSN and other high 
content sites that otherwise suck to use.
marlon

- Original Message - 
From: Patrick Nix Jr. [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 11:53 AM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 So is it safer/better to avoid caching servers altogether?

 __

 Patrick Nix, Jr.,
 csweb.net
 (918) 235-0414
 http://www.csweb.net
 E-Mail: [EMAIL PROTECTED]

 
 ATTENTION: This e-mail may contain information that is confidential in
 nature. If you are not the intended recipient, please delete this e-mail
 and notify the sender immediately. Thank you.
 

 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of David E. Smith
 Sent: Thursday, July 10, 2008 1:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 Patrick Nix Jr. wrote:
 In another attempt to light the bandwidth load we are going to setup a
 cache server.  Any thoughts or suggestions on which one to use?

 I know this is the popular answer to everything on this list, but
 Mikrotik RouterOS has a decent, and dead-simple to use, proxy/cache
 package. The tricky part is probably finding the right place in your
 network to put it, and configuring firewall rules (so that Web traffic
 gets sent to the proxy/cache server), and even those aren't too
 difficult.

 At least the old one was pretty good - my experience with it was
 probably four years ago, but at the time it worked well. Between then
 and now, I believe Mikrotik has written their own (previously it was
 just the Squid open-source package, with their pretty interface on top).

 If you're comfortable with Linux, you can do it yourself, but the time
 you'll save is easily worth the low one-time cost of a RouterOS software

 license.

 Whatever you use, make sure you know how to handle exceptions. Some
 Web sites just don't play well with being proxied. (One of our customers

 is a dealer for a major auto maker, and the proxy/cache system basically

 killed their whole business, as the stuff in Detroit just flat refused
 to function.) You'll want an easy way to test this sort of thing at your

 desktop, to try to reproduce weird customer calls - and there will be
 some doozies.

 David Smith
 MVN.net


 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 
 

 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Marlon K. Schafer
I totally disagree with that David.

A cache server will often make yahoo and other common sites load in MUCH 
less time.  There won't be much real change in speeds (like when doing a bw 
test) but the look and feel will be much better.
marlon

- Original Message - 
From: David E. Smith [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 1:03 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?

 About 99% of your users won't notice, or know, or care, that you've got
 anything like that in your network. The savings in bandwidth (and, to a
 lesser extent, money not spent on bandwidth) can help you out of a tight
 spot. Just be aware that the last 1% of customers can get you into 
 trouble.

 David Smith
 MVN.net


 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 

 WISPA Wireless List: wireless@wispa.org

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 http://lists.wispa.org/mailman/listinfo/wireless

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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Marlon K. Schafer
When we had that trouble we just had to teach them to use the shift, 
refresh trick.  forced the cache to load the new page now instead of when 
it normally would have.  No trouble with them after that.
marlon

- Original Message - 
From: George Rogato [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 8:27 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 The people that we had the most problems with were web designers who's
 sites were cached and they couldn't easily see their changes.
 We always told then to add no cache to their sites.

 But still it's a phone call and a discussion.


 Kurt Fankhauser wrote:
 I call that 1% the high-maintenance customers .

 Kurt Fankhauser
 WAVELINC
 P.O. Box 126
 Bucyrus, OH 44820
 419-562-6405
 www.wavelinc.com


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of Bo Ring
 Sent: Thursday, July 10, 2008 4:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 When I was an ISP, that 1% got me in real trouble. They scream loudly.

 On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?
 About 99% of your users won't notice, or know, or care, that you've
 got
 anything like that in your network. The savings in bandwidth (and,
 to a
 lesser extent, money not spent on bandwidth) can help you out of a
 tight
 spot. Just be aware that the last 1% of customers can get you into
 trouble.

 David Smith
 MVN.net



 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/

 
 
 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

 Archives: http://lists.wispa.org/pipermail/wireless/




 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Travis Johnson




Hi,

Back when we tried the cache server thing (5 years ago), it turned into
more work than it was worth. We were getting 2-3 calls per day from
people that certain web pages were broken and not loading correctly,
etc.

The real kicker was when UPS shut down our cache server's IP address
because they thought we were doing "too many shipping lookups from the
same IP address". Turns out one of our bigger customers was the main
distributor for DISH Network and their automated system did a lookup on
UPS's website whenever anyone was tracking a shipment. In the end, they
canceled service ($500/month) because of this.

Bandwidth is cheap now-a-days, even in Idaho (where the closest POP is
200+ miles). A cache server is just going to add headaches, support
calls, and one more server(s) to maintain. 

Travis
Microserv

Marlon K. Schafer wrote:

  When we had that trouble we just had to teach them to use the "shift, 
refresh" trick.  forced the cache to load the new page now instead of when 
it normally would have.  No trouble with them after that.
marlon

- Original Message - 
From: "George Rogato" [EMAIL PROTECTED]
To: "WISPA General List" wireless@wispa.org
Sent: Thursday, July 10, 2008 8:27 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


  
  
The people that we had the most problems with were web designers who's
sites were cached and they couldn't easily see their changes.
We always told then to add no cache to their sites.

But still it's a phone call and a discussion.


Kurt Fankhauser wrote:


  I call that 1% the "high-maintenance customers ".

Kurt Fankhauser
WAVELINC
P.O. Box 126
Bucyrus, OH 44820
419-562-6405
www.wavelinc.com


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On
Behalf Of Bo Ring
Sent: Thursday, July 10, 2008 4:07 PM
To: WISPA General List
Subject: Re: [WISPA] Any thoughts on a decent cache server

When I was an ISP, that 1% got me in real trouble. They scream loudly.

On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

  
  
Patrick Nix Jr. wrote:


  So is it safer/better to avoid caching servers altogether?
  

About 99% of your users won't notice, or know, or care, that you've
got
anything like that in your network. The savings in bandwidth (and,
to a
lesser extent, money not spent on bandwidth) can help you out of a
tight
spot. Just be aware that the last 1% of customers can get you into
trouble.

David Smith
MVN.net




  
  

  
  
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Tom DeReggi
 use the shift,  refresh trick.

That was a helpful tip.  Is that just an IE6 thing?

Tom DeReggi
RapidDSL  Wireless, Inc
IntAirNet- Fixed Wireless Broadband


- Original Message - 
From: Marlon K. Schafer [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 10:49 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 When we had that trouble we just had to teach them to use the shift,
 refresh trick.  forced the cache to load the new page now instead of when
 it normally would have.  No trouble with them after that.
 marlon

 - Original Message - 
 From: George Rogato [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 8:27 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 The people that we had the most problems with were web designers who's
 sites were cached and they couldn't easily see their changes.
 We always told then to add no cache to their sites.

 But still it's a phone call and a discussion.


 Kurt Fankhauser wrote:
 I call that 1% the high-maintenance customers .

 Kurt Fankhauser
 WAVELINC
 P.O. Box 126
 Bucyrus, OH 44820
 419-562-6405
 www.wavelinc.com


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of Bo Ring
 Sent: Thursday, July 10, 2008 4:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 When I was an ISP, that 1% got me in real trouble. They scream loudly.

 On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?
 About 99% of your users won't notice, or know, or care, that you've
 got
 anything like that in your network. The savings in bandwidth (and,
 to a
 lesser extent, money not spent on bandwidth) can help you out of a
 tight
 spot. Just be aware that the last 1% of customers can get you into
 trouble.

 David Smith
 MVN.net



 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/

 
 
 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Marlon K. Schafer
Don't know.  It was a specific tip from the folks that made my cache.  Don't 
know if it works on others.

Caching is on my short list of network upgrades to do.

The bigger the network is the more good it does.

marlon

- Original Message - 
From: Tom DeReggi [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 9:14 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 use the shift,  refresh trick.

 That was a helpful tip.  Is that just an IE6 thing?

 Tom DeReggi
 RapidDSL  Wireless, Inc
 IntAirNet- Fixed Wireless Broadband


 - Original Message - 
 From: Marlon K. Schafer [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 10:49 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 When we had that trouble we just had to teach them to use the shift,
 refresh trick.  forced the cache to load the new page now instead of 
 when
 it normally would have.  No trouble with them after that.
 marlon

 - Original Message - 
 From: George Rogato [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 8:27 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 The people that we had the most problems with were web designers who's
 sites were cached and they couldn't easily see their changes.
 We always told then to add no cache to their sites.

 But still it's a phone call and a discussion.


 Kurt Fankhauser wrote:
 I call that 1% the high-maintenance customers .

 Kurt Fankhauser
 WAVELINC
 P.O. Box 126
 Bucyrus, OH 44820
 419-562-6405
 www.wavelinc.com


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of Bo Ring
 Sent: Thursday, July 10, 2008 4:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 When I was an ISP, that 1% got me in real trouble. They scream loudly.

 On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?
 About 99% of your users won't notice, or know, or care, that you've
 got
 anything like that in your network. The savings in bandwidth (and,
 to a
 lesser extent, money not spent on bandwidth) can help you out of a
 tight
 spot. Just be aware that the last 1% of customers can get you into
 trouble.

 David Smith
 MVN.net



 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/

 
 
 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

 Archives: http://lists.wispa.org/pipermail/wireless/




 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Travis Johnson




Tom,

You can find all kinds of information if you do searches on squid. It's
a very popular caching system that runs on *nix. The amount of RAM is
directly related to the size of the disk cache.

When we had servers 5 years ago (two of them in parallel) they were the
fastest processors you could buy, with SCSI disk arrays in each one and
I think 2GB of RAM each. I would guess in today's world you would be
looking at 8GB or 16GB of RAM and very large disk arrays (6 disks x
500GB maybe).

The other thing to consider is you now have another point of failure in
your network. If a disk starts acting strange or the machine does a
core dump, whatever you have re-directing traffic to the box may take 5
seconds to realize it's down and not send traffic to it. If you put it
directly in-line with your traffic flow, you will have a complete
failure of all internet services to your customers. :(

Travis
Microserv

Tom DeReggi wrote:

  Any stats, on how much RAM is a good amount to allocated for the cache 
servers, per user served?

Obviously, a large fast DiskDrive, is needed if caching a lot of large 
files.
I'd also argue that DiskDrive probably should be located on a dedicated 
appliance.

Tom DeReggi
RapidDSL  Wireless, Inc
IntAirNet- Fixed Wireless Broadband


- Original Message - 
From: "Marlon K. Schafer" [EMAIL PROTECTED]
To: "WISPA General List" wireless@wispa.org
Sent: Thursday, July 10, 2008 10:49 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


  
  
When we had that trouble we just had to teach them to use the "shift,
refresh" trick.  forced the cache to load the new page now instead of when
it normally would have.  No trouble with them after that.
marlon

- Original Message - 
From: "George Rogato" [EMAIL PROTECTED]
To: "WISPA General List" wireless@wispa.org
Sent: Thursday, July 10, 2008 8:27 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server




  The people that we had the most problems with were web designers who's
sites were cached and they couldn't easily see their changes.
We always told then to add no cache to their sites.

But still it's a phone call and a discussion.


Kurt Fankhauser wrote:
  
  
I call that 1% the "high-maintenance customers ".

Kurt Fankhauser
WAVELINC
P.O. Box 126
Bucyrus, OH 44820
419-562-6405
www.wavelinc.com


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On
Behalf Of Bo Ring
Sent: Thursday, July 10, 2008 4:07 PM
To: WISPA General List
Subject: Re: [WISPA] Any thoughts on a decent cache server

When I was an ISP, that 1% got me in real trouble. They scream loudly.

On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:



  Patrick Nix Jr. wrote:
  
  
So is it safer/better to avoid caching servers altogether?

  
  About 99% of your users won't notice, or know, or care, that you've
got
anything like that in your network. The savings in bandwidth (and,
to a
lesser extent, money not spent on bandwidth) can help you out of a
tight
spot. Just be aware that the last 1% of customers can get you into
trouble.

David Smith
MVN.net



  





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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread George Rogato
Shift R means it won't take it from your computers cache. But it still 
going to hit your caching server.

Your right Marlon those cobalt servers were pretty cool. Sun bought them 
didn't they?

George

Marlon K. Schafer wrote:
 Don't know.  It was a specific tip from the folks that made my cache.  Don't 
 know if it works on others.
 
 Caching is on my short list of network upgrades to do.
 
 The bigger the network is the more good it does.
 
 marlon
 
 - Original Message - 
 From: Tom DeReggi [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 9:14 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server
 
 
 use the shift,  refresh trick.
 That was a helpful tip.  Is that just an IE6 thing?

 Tom DeReggi
 RapidDSL  Wireless, Inc
 IntAirNet- Fixed Wireless Broadband


 - Original Message - 
 From: Marlon K. Schafer [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 10:49 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 When we had that trouble we just had to teach them to use the shift,
 refresh trick.  forced the cache to load the new page now instead of 
 when
 it normally would have.  No trouble with them after that.
 marlon

 - Original Message - 
 From: George Rogato [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 8:27 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 The people that we had the most problems with were web designers who's
 sites were cached and they couldn't easily see their changes.
 We always told then to add no cache to their sites.

 But still it's a phone call and a discussion.


 Kurt Fankhauser wrote:
 I call that 1% the high-maintenance customers .

 Kurt Fankhauser
 WAVELINC
 P.O. Box 126
 Bucyrus, OH 44820
 419-562-6405
 www.wavelinc.com


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of Bo Ring
 Sent: Thursday, July 10, 2008 4:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 When I was an ISP, that 1% got me in real trouble. They scream loudly.

 On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?
 About 99% of your users won't notice, or know, or care, that you've
 got
 anything like that in your network. The savings in bandwidth (and,
 to a
 lesser extent, money not spent on bandwidth) can help you out of a
 tight
 spot. Just be aware that the last 1% of customers can get you into
 trouble.

 David Smith
 MVN.net



 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/

 
 
 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

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 Archives: http

Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Marlon K. Schafer
The drive should be big.  But probably doesn't need to be that big. 
Remember that a drive is MUCH faster than the average network.

I'd guess that it would be hard to have too much ram or proc.
marlon

- Original Message - 
From: Tom DeReggi [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 9:18 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 Any stats, on how much RAM is a good amount to allocated for the cache
 servers, per user served?

 Obviously, a large fast DiskDrive, is needed if caching a lot of large
 files.
 I'd also argue that DiskDrive probably should be located on a dedicated
 appliance.

 Tom DeReggi
 RapidDSL  Wireless, Inc
 IntAirNet- Fixed Wireless Broadband


 - Original Message - 
 From: Marlon K. Schafer [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 10:49 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 When we had that trouble we just had to teach them to use the shift,
 refresh trick.  forced the cache to load the new page now instead of 
 when
 it normally would have.  No trouble with them after that.
 marlon

 - Original Message - 
 From: George Rogato [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 8:27 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 The people that we had the most problems with were web designers who's
 sites were cached and they couldn't easily see their changes.
 We always told then to add no cache to their sites.

 But still it's a phone call and a discussion.


 Kurt Fankhauser wrote:
 I call that 1% the high-maintenance customers .

 Kurt Fankhauser
 WAVELINC
 P.O. Box 126
 Bucyrus, OH 44820
 419-562-6405
 www.wavelinc.com


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of Bo Ring
 Sent: Thursday, July 10, 2008 4:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 When I was an ISP, that 1% got me in real trouble. They scream loudly.

 On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?
 About 99% of your users won't notice, or know, or care, that you've
 got
 anything like that in your network. The savings in bandwidth (and,
 to a
 lesser extent, money not spent on bandwidth) can help you out of a
 tight
 spot. Just be aware that the last 1% of customers can get you into
 trouble.

 David Smith
 MVN.net



 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/

 
 
 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless

 Archives: http://lists.wispa.org/pipermail/wireless/




 
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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Marlon K. Schafer
What I'd LOVE to figure out how to set up is a spoke and hub cache system.

Let the MAIN site track the sites, then feed that data to all of the wpops.  
This way we'd keep most of the traffic of the internet (great to get content in 
single digit ms speeds rather than mid to high double digit ones) and we'd not 
have to have all of the traffic go back to the main site all of the time.  But 
cache's don't work well for small, low volume sites.

Oh well, another project for someday.
marlon

  - Original Message - 
  From: Travis Johnson 
  To: WISPA General List 
  Sent: Thursday, July 10, 2008 9:21 PM
  Subject: Re: [WISPA] Any thoughts on a decent cache server


  Tom,

  You can find all kinds of information if you do searches on squid. It's a 
very popular caching system that runs on *nix. The amount of RAM is directly 
related to the size of the disk cache.

  When we had servers 5 years ago (two of them in parallel) they were the 
fastest processors you could buy, with SCSI disk arrays in each one and I think 
2GB of RAM each. I would guess in today's world you would be looking at 8GB or 
16GB of RAM and very large disk arrays (6 disks x 500GB maybe).

  The other thing to consider is you now have another point of failure in your 
network. If a disk starts acting strange or the machine does a core dump, 
whatever you have re-directing traffic to the box may take 5 seconds to realize 
it's down and not send traffic to it. If you put it directly in-line with your 
traffic flow, you will have a complete failure of all internet services to your 
customers. :(

  Travis
  Microserv

  Tom DeReggi wrote: 
Any stats, on how much RAM is a good amount to allocated for the cache 
servers, per user served?

Obviously, a large fast DiskDrive, is needed if caching a lot of large 
files.
I'd also argue that DiskDrive probably should be located on a dedicated 
appliance.

Tom DeReggi
RapidDSL  Wireless, Inc
IntAirNet- Fixed Wireless Broadband


- Original Message - 
From: Marlon K. Schafer [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 10:49 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


  When we had that trouble we just had to teach them to use the shift,
refresh trick.  forced the cache to load the new page now instead of when
it normally would have.  No trouble with them after that.
marlon

- Original Message - 
From: George Rogato [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 8:27 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


The people that we had the most problems with were web designers who's
sites were cached and they couldn't easily see their changes.
We always told then to add no cache to their sites.

But still it's a phone call and a discussion.


Kurt Fankhauser wrote:
  I call that 1% the high-maintenance customers .

Kurt Fankhauser
WAVELINC
P.O. Box 126
Bucyrus, OH 44820
419-562-6405
www.wavelinc.com


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Bo Ring
Sent: Thursday, July 10, 2008 4:07 PM
To: WISPA General List
Subject: Re: [WISPA] Any thoughts on a decent cache server

When I was an ISP, that 1% got me in real trouble. They scream loudly.

On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

Patrick Nix Jr. wrote:
  So is it safer/better to avoid caching servers altogether?
About 99% of your users won't notice, or know, or care, that you've
got
anything like that in your network. The savings in bandwidth (and,
to a
lesser extent, money not spent on bandwidth) can help you out of a
tight
spot. Just be aware that the last 1% of customers can get you into
trouble.

David Smith
MVN.net



  


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Re: [WISPA] Any thoughts on a decent cache server

2008-07-10 Thread Marlon K. Schafer
Yeah.  I don't think they do any cache units anymore.
marlon

- Original Message - 
From: George Rogato [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, July 10, 2008 9:22 PM
Subject: Re: [WISPA] Any thoughts on a decent cache server


 Shift R means it won't take it from your computers cache. But it still
 going to hit your caching server.

 Your right Marlon those cobalt servers were pretty cool. Sun bought them
 didn't they?

 George

 Marlon K. Schafer wrote:
 Don't know.  It was a specific tip from the folks that made my cache. 
 Don't
 know if it works on others.

 Caching is on my short list of network upgrades to do.

 The bigger the network is the more good it does.

 marlon

 - Original Message - 
 From: Tom DeReggi [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 9:14 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 use the shift,  refresh trick.
 That was a helpful tip.  Is that just an IE6 thing?

 Tom DeReggi
 RapidDSL  Wireless, Inc
 IntAirNet- Fixed Wireless Broadband


 - Original Message - 
 From: Marlon K. Schafer [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 10:49 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 When we had that trouble we just had to teach them to use the shift,
 refresh trick.  forced the cache to load the new page now instead of
 when
 it normally would have.  No trouble with them after that.
 marlon

 - Original Message - 
 From: George Rogato [EMAIL PROTECTED]
 To: WISPA General List wireless@wispa.org
 Sent: Thursday, July 10, 2008 8:27 PM
 Subject: Re: [WISPA] Any thoughts on a decent cache server


 The people that we had the most problems with were web designers who's
 sites were cached and they couldn't easily see their changes.
 We always told then to add no cache to their sites.

 But still it's a phone call and a discussion.


 Kurt Fankhauser wrote:
 I call that 1% the high-maintenance customers .

 Kurt Fankhauser
 WAVELINC
 P.O. Box 126
 Bucyrus, OH 44820
 419-562-6405
 www.wavelinc.com


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
 On
 Behalf Of Bo Ring
 Sent: Thursday, July 10, 2008 4:07 PM
 To: WISPA General List
 Subject: Re: [WISPA] Any thoughts on a decent cache server

 When I was an ISP, that 1% got me in real trouble. They scream 
 loudly.

 On Jul 10, 2008, at 3:03 PM, David E. Smith wrote:

 Patrick Nix Jr. wrote:
 So is it safer/better to avoid caching servers altogether?
 About 99% of your users won't notice, or know, or care, that you've
 got
 anything like that in your network. The savings in bandwidth (and,
 to a
 lesser extent, money not spent on bandwidth) can help you out of a
 tight
 spot. Just be aware that the last 1% of customers can get you into
 trouble.

 David Smith
 MVN.net



 
 
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