Re: How to disable the cache for just one site ?

[NFN Smith]

David E. Ross wrote:

I have disabled caching entirely.  Too many Web sites are generated or
modified "on the fly", through PHP, server-side includes, or scripts.
That means many cached Web pages are not current.  With a good broadband
connection, I do not notice much delay except when I encounter a Web
server with problems.


That's my take, as well. I haven't disabled my cache, but I run it 
considerably smaller than the default size, at 10 MB.


Although there's some use for cache, and cached content will load 
faster, but not dramatically, or even perceptibly, unless (as noted in 
another post in this thread, if you place your cache in a RAM disk).


But the cache was far more important in the days of dial-up connections, 
and with broadband, the need for cache is far less.


Smith

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Re: How to disable the cache for just one site ?

[Allen]

Ray_Net wrote:

David E. Ross wrote on 03-09-18 04:51:

On 9/2/2018 4:14 PM, Ray_Net wrote:

David E. Ross wrote on 03-09-18 01:03:

On 9/2/2018 1:52 PM, Ray_Net wrote:
I had a problem because SM show me the old version of a page on a 
site.


To avoid this, I put the cache length = 0

But now, some sites are too slow.

How can I disable the cache for just one site ?


I have disabled caching entirely.  Too many Web sites are generated or
modified "on the fly", through PHP, server-side includes, or scripts.
That means many cached Web pages are not current.  With a good 
broadband

connection, I do not notice much delay except when I encounter a Web
server with problems.

You have disabled completely the cache by going into about:config 
then put:

browser.cache.disk.enable to FALSE ?

Yes, through an entry in file user.js.



Anyway, with no caching I encounter a website who is too slow now.
So It's better to not disable the cache

What about:
"Compare the page in the cache to the page on the network" set to:
"Every time I view the page"

When an HTML file is generated or modified "on the fly", its time-stamp
is set to when that happens.  With "Compare the page in the cache to the
page on the network" set to "Every time I view the page", the time-stamp
of the file on the Web server has to be fetched for comparison with the
time-stamp on the cached file.  Thus, if a Web server is slow, the
comparison will be slow.  If the comparison fails, rendering the Web
page will be slower than if caching were disabled because you must add
the fetching of the server's time-stamp to the downloading of the HTML
file.

At one time, security implemented in Mozilla-based browsers meant that
Web pages downloaded as HTTPS were never cached.  I do not know if this
is still true.  However, more and more Web sites now use HTTPS instead
of HTTP.  If not caching HTTPS sites is indeed still true, it further
reduces any benefits from caching beyond the reduction from "on the fly"
generation or modification of Web pages.

My broadband connection gives me more than 75 Mbps downloads.  I chose
to disable caching because fewer and fewer Web sites benefit.


OK, so the best way, for me, could be:
- cache enabled.
- cache size = 0 MB
So my offending site will not be cached - and I must accept that other 
sites could be more slow because of cache size = 0.


I downloaded a driver that lets me create and manage a RAM disk (R:\ in 
my case) I have configured the cash to that location in preferences. 
The cashed pages are good and fast, until the next nightly reboot.  I 
also use this for the IE cash but I haven't figured out how to use it 
for Edge. I also have ccleaner configured to run at startup because it 
seems to find Facebook cookies that SeaMonkey can't eliminate for some 
reason.

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Re: How to disable the cache for just one site ?

[Ray_Net]

David E. Ross wrote on 03-09-18 04:51:

On 9/2/2018 4:14 PM, Ray_Net wrote:

David E. Ross wrote on 03-09-18 01:03:

On 9/2/2018 1:52 PM, Ray_Net wrote:

I had a problem because SM show me the old version of a page on a site.

To avoid this, I put the cache length = 0

But now, some sites are too slow.

How can I disable the cache for just one site ?


I have disabled caching entirely.  Too many Web sites are generated or
modified "on the fly", through PHP, server-side includes, or scripts.
That means many cached Web pages are not current.  With a good broadband
connection, I do not notice much delay except when I encounter a Web
server with problems.


You have disabled completely the cache by going into about:config then put:
browser.cache.disk.enable to FALSE ?

Yes, through an entry in file user.js.



Anyway, with no caching I encounter a website who is too slow now.
So It's better to not disable the cache

What about:
"Compare the page in the cache to the page on the network" set to:
"Every time I view the page"

When an HTML file is generated or modified "on the fly", its time-stamp
is set to when that happens.  With "Compare the page in the cache to the
page on the network" set to "Every time I view the page", the time-stamp
of the file on the Web server has to be fetched for comparison with the
time-stamp on the cached file.  Thus, if a Web server is slow, the
comparison will be slow.  If the comparison fails, rendering the Web
page will be slower than if caching were disabled because you must add
the fetching of the server's time-stamp to the downloading of the HTML
file.

At one time, security implemented in Mozilla-based browsers meant that
Web pages downloaded as HTTPS were never cached.  I do not know if this
is still true.  However, more and more Web sites now use HTTPS instead
of HTTP.  If not caching HTTPS sites is indeed still true, it further
reduces any benefits from caching beyond the reduction from "on the fly"
generation or modification of Web pages.

My broadband connection gives me more than 75 Mbps downloads.  I chose
to disable caching because fewer and fewer Web sites benefit.


OK, so the best way, for me, could be:
- cache enabled.
- cache size = 0 MB
So my offending site will not be cached - and I must accept that other 
sites could be more slow because of cache size = 0.


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Re: How to disable the cache for just one site ?

[GerardJan]

Ray_Net wrote:

I had a problem because SM show me the old version of a page on a site.

To avoid this, I put the cache length = 0

But now, some sites are too slow.

How can I disable the cache for just one site ?


Dear Ray,
I do not think that that is possible.


--
https://facebook.com/gerardjan.vinkesteijn
Karl's version of Parkinson's Law:  Work expands to exceed the time alloted it.

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 
SeaMonkey/2.49.4

Build identifier: 20180711183816
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Re: How to disable the cache for just one site ?

[Lee]

On 9/2/18, David E. Ross wrote:
  <.. snip lots ..>
> At one time, security implemented in Mozilla-based browsers meant that
> Web pages downloaded as HTTPS were never cached.  I do not know if this
> is still true.

I think it's controlled in about:config
browser.cache.disk_cache_ssl   set to true or false

>  However, more and more Web sites now use HTTPS instead
> of HTTP.  If not caching HTTPS sites is indeed still true,

caching of https sites is enabled for me

> it further
> reduces any benefits from caching beyond the reduction from "on the fly"
> generation or modification of Web pages.

Wasn't there something that showed cache hits & misses since SM was
started?  I thought I saw something like that a long time ago but I
can't find it now.

> My broadband connection gives me more than 75 Mbps downloads.  I chose
> to disable caching because fewer and fewer Web sites benefit.

We've had this discussion before.  Not everyone has an internet
connection fast enough to allow us to disable the cache and not notice
any difference :(

For the curious, you can click on Tools / Web Development / Toggle
Tools & then click on the Network tab

load a web page and it'll tell you
- which page elements were loaded from cache
- how long it took to load the other elements of the page

Regards,
Lee
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Re: How to disable the cache for just one site ?

[Ray_Net]

David E. Ross wrote on 03-09-18 01:03:

On 9/2/2018 1:52 PM, Ray_Net wrote:

I had a problem because SM show me the old version of a page on a site.

To avoid this, I put the cache length = 0

But now, some sites are too slow.

How can I disable the cache for just one site ?


I have disabled caching entirely.  Too many Web sites are generated or
modified "on the fly", through PHP, server-side includes, or scripts.
That means many cached Web pages are not current.  With a good broadband
connection, I do not notice much delay except when I encounter a Web
server with problems.


You have disabled completely the cache by going into about:config then put:
browser.cache.disk.enable to FALSE ?

Anyway, with no caching I encounter a website who is too slow now.
So It's better to not disable the cache

What about:
"Compare the page in the cache to the page on the network" set to: 
"Every time I view the page"


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Re: How to disable the cache for just one site ?

[David E. Ross]

On 9/2/2018 1:52 PM, Ray_Net wrote:
> I had a problem because SM show me the old version of a page on a site.
> 
> To avoid this, I put the cache length = 0
> 
> But now, some sites are too slow.
> 
> How can I disable the cache for just one site ?
> 

I have disabled caching entirely.  Too many Web sites are generated or
modified "on the fly", through PHP, server-side includes, or scripts.
That means many cached Web pages are not current.  With a good broadband
connection, I do not notice much delay except when I encounter a Web
server with problems.

-- 
David E. Ross


Too often, Twitter is a source of verbal vomit.  Examples include Donald
Trump, Roseanne Barr, and Elon Musk.
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Re: How to disable the cache for just one site ?

[Mason83]

On 02/09/2018 22:52, Ray_Net wrote:

> I had a problem because SM show me the old version of a page on a site.
> 
> To avoid this, I put the cache length = 0
> 
> But now, some sites are too slow.
> 
> How can I disable the cache for just one site ?

I'm not sure you can.

You could enable the cache, and hit SHIFT+F5 when you load
the problematic website.
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