Re: [flexcoders] the old caching problem... many answers no solution!!!
Might as well ask why is the sky blue.
This is is not new. HTML no-cache headers have not worked for any
embedded assets, including quicktime or any other files, since the first
browsers were first able to use applets and other media over 14 years
ago. It's just the way it is. And the fix is easy enough using
javascript, so quit whining.
___
Joseph Balderson | http://joeflash.ca
Flex Flash Platform Developer | Abobe Certified Developer Trainer
Author, Professional Flex 3 (coming Winter 2008)
Staff Writer, Community MX | http://communitymx.com/author.cfm?cid=4674
Josh McDonald wrote:
Why isn't this built into the JavaScript in /html-template, if explorer
is still ignoring the timestamps on .swf files? And what makes .swf
files special? Even explorer can abide by the no-cache and expires
headers when fetching .html
-J
On Fri, May 30, 2008 at 5:57 AM, Joseph Balderson [EMAIL PROTECTED]
mailto:[EMAIL PROTECTED] wrote:
As I mentioned in my previous email, use the following to refer to your
flash SWF file, no backend code required:
myFile.swf?+ (new Date()).getTime( )
You'll need to use it in Javascript tags, such as SWFObject or the
default adobe tags. You can easily modify the index.template.html file
to have Flex Builder include this code in all its html files.
What it does is use js to append a unique number on the end of the
filename, making the browser think it's being asked to get a new file
each and every time, which assures that the browser will always fetch
the file from the server.
__
Joseph Balderson | http://joeflash.ca
Flex Flash Platform Developer | Abobe Certified Developer Trainer
Author, Professional Flex 3 (coming Winter 2008)
Staff Writer, Community MX | http://communitymx.com/author.cfm?cid=4674
amandeepsingh bajwa wrote:
Hi Joseph
vo...!!! amazed by how wide can a programmer can see. No sir, i dont
work for military or something.
My only requirement is to make the clients fetch the latest swf
instead
of what the browser has cached. Absolutely no problem with swf being
getting stores their. True we need to concentrate upon securing
the data
rather than the swf itself. I ll always remember this tip.
But the problem i face at the moment is to make client browser to
fetch
the latest version of swf from server and not cached one. The
topic is
not new and I have seen various Q's related to this in the
archive, but
could hardly understand any.
confused!!!
- Original Message
From: Joseph Balderson [EMAIL PROTECTED] mailto:news%40joeflash.ca
To: flexcoders@yahoogroups.com mailto:flexcoders%40yahoogroups.com
Sent: Thursday, 29 May, 2008 4:56:53 PM
Subject: Re: [flexcoders] the old caching problem... many answers no
solution!!!
All that html metadata does is assure that the HTML code will be
refreshed each and every time the viewer sees the page. But to my
knowledge this does not affect whether a media asset such as a flash
document (SWF) is refreshed on each pageview.
It is impossible to prevent a SWF from apprearing in the
browser's cache
folder. But you can insert generate the embed and param tags
dynamically
with javascript, and then using something like:
myFile.swf? nocahe=+ (new Date()).getTime( )
(not excatly sure of the syntax, it's been a while)
...you can assure that the browser will load the SWF anew with
each page
view/refresh so that the SWF is being fetched from the server
each time
versus from the browser cache after the first view. But the file will
still appear in the browser's cache folder no matter what you do,
including runtime loading of a content SWF into a proxy..
I suppose, theoretically you can stream the content SWF from a
streaming
server such as Red5 or FMS into a bytearray in a host SWF and convert
the bytecode into usable content, but I've never tried it, and do not
know how you would implement the particulars. This would be the
only way
to ensure that the SWF never appears in the browser cache.
Usually it's
more important to secure the data in the application than the
application itself. Better to apply a bytecode obfuscator than to go
through all that trouble unless you're doing work for the military or
something.
_ _ _ _ _ _
Joseph Balderson | http://joeflash.. ca http://joeflash.ca
Flex Flash Platform Developer
[flexcoders] the old caching problem... many answers no solution!!!
Hi Following is the Code available at http://livedocs.adobe.com/flex/3/html/help.html?content=performance_05.html (1)Where exactly to use it so as to prevent client side caching? Cache-control: no-cache, no-store, must-revalidate, max-age=-1 Pragma: no-cache, no-store Expires: -1 (2)is there a better way to prevent that when i m not using php, jsp, https service, flex data service, and all the stuff whose tutorials are mostly available when i google for the same. i simply want my swf not to be cached by the browser. please guide Thanks
Re: [flexcoders] the old caching problem... many answers no solution!!!
All that html metadata does is assure that the HTML code will be refreshed each and every time the viewer sees the page. But to my knowledge this does not affect whether a media asset such as a flash document (SWF) is refreshed on each pageview. It is impossible to prevent a SWF from apprearing in the browser's cache folder. But you can insert generate the embed and param tags dynamically with javascript, and then using something like: myFile.swf?nocahe=+(new Date()).getTime() (not excatly sure of the syntax, it's been a while) ...you can assure that the browser will load the SWF anew with each page view/refresh so that the SWF is being fetched from the server each time versus from the browser cache after the first view. But the file will still appear in the browser's cache folder no matter what you do, including runtime loading of a content SWF into a proxy. I suppose, theoretically you can stream the content SWF from a streaming server such as Red5 or FMS into a bytearray in a host SWF and convert the bytecode into usable content, but I've never tried it, and do not know how you would implement the particulars. This would be the only way to ensure that the SWF never appears in the browser cache. Usually it's more important to secure the data in the application than the application itself. Better to apply a bytecode obfuscator than to go through all that trouble unless you're doing work for the military or something. ___ Joseph Balderson | http://joeflash.ca Flex Flash Platform Developer | Abobe Certified Developer Trainer Author, Professional Flex 3 (coming Winter 2008) Staff Writer, Community MX | http://communitymx.com/author.cfm?cid=4674 mailamannow wrote: Hi Following is the Code available at http://livedocs.adobe.com/flex/3/html/help.html?content=performance_05.html (1)Where exactly to use it so as to prevent client side caching? Cache-control: no-cache, no-store, must-revalidate, max-age=-1 Pragma: no-cache, no-store Expires: -1 (2)is there a better way to prevent that when i m not using php, jsp, https service, flex data service, and all the stuff whose tutorials are mostly available when i google for the same. i simply want my swf not to be cached by the browser. please guide Thanks -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups Links
Re: [flexcoders] the old caching problem... many answers no solution!!!
Hi Joseph vo...!!! amazed by how wide can a programmer can see. No sir, i dont work for military or something. My only requirement is to make the clients fetch the latest swf instead of what the browser has cached. Absolutely no problem with swf being getting stores their. True we need to concentrate upon securing the data rather than the swf itself. I ll always remember this tip. But the problem i face at the moment is to make client browser to fetch the latest version of swf from server and not cached one. The topic is not new and I have seen various Q's related to this in the archive, but could hardly understand any. confused!!! - Original Message From: Joseph Balderson [EMAIL PROTECTED] To: flexcoders@yahoogroups.com Sent: Thursday, 29 May, 2008 4:56:53 PM Subject: Re: [flexcoders] the old caching problem... many answers no solution!!! All that html metadata does is assure that the HTML code will be refreshed each and every time the viewer sees the page. But to my knowledge this does not affect whether a media asset such as a flash document (SWF) is refreshed on each pageview. It is impossible to prevent a SWF from apprearing in the browser's cache folder. But you can insert generate the embed and param tags dynamically with javascript, and then using something like: myFile.swf? nocahe=+ (new Date()).getTime( ) (not excatly sure of the syntax, it's been a while) ...you can assure that the browser will load the SWF anew with each page view/refresh so that the SWF is being fetched from the server each time versus from the browser cache after the first view. But the file will still appear in the browser's cache folder no matter what you do, including runtime loading of a content SWF into a proxy. I suppose, theoretically you can stream the content SWF from a streaming server such as Red5 or FMS into a bytearray in a host SWF and convert the bytecode into usable content, but I've never tried it, and do not know how you would implement the particulars. This would be the only way to ensure that the SWF never appears in the browser cache. Usually it's more important to secure the data in the application than the application itself. Better to apply a bytecode obfuscator than to go through all that trouble unless you're doing work for the military or something. _ _ _ _ _ _ Joseph Balderson | http://joeflash. ca Flex Flash Platform Developer | Abobe Certified Developer Trainer Author, Professional Flex 3 (coming Winter 2008) Staff Writer, Community MX | http://communitymx. com/author. cfm?cid=4674 mailamannow wrote: Hi Following is the Code available at http://livedocs. adobe.com/ flex/3/html/ help.html? content=performa nce_05.html (1)Where exactly to use it so as to prevent client side caching? Cache-control: no-cache, no-store, must-revalidate, max-age=-1 Pragma: no-cache, no-store Expires: -1 (2)is there a better way to prevent that when i m not using php, jsp, https service, flex data service, and all the stuff whose tutorials are mostly available when i google for the same.. i simply want my swf not to be cached by the browser. please guide Thanks - - -- -- Flexcoders Mailing List FAQ: http://groups. yahoo.com/ group/flexcoders /files/flexcoder sFAQ.txt Search Archives: http://www.mail- archive.com/ flexcoders% 40yahoogroups. comYahoo! Groups Links Unlimited freedom, unlimited storage. Get it now, on http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html/
Re: [flexcoders] the old caching problem... many answers no solution!!!
The browser caches files on the basis of their file signature. So if you ask
for mySWF.swf repeatedly the file can be cached. There is a mechanism for
passing parameters with requests to load files by adding information after the
filename. If this is done and the appended information changes, the browser
can't cache the file because it looks different every time.
So, mySWF.swf can bee cached, but if you ask for mySWF.swf?param=1,
mySWF.swf?param=2, mySWF.swf?param=3 it will always get the latest copy of
mySWF.swf.
Paul
- Original Message -
From: amandeepsingh bajwa
To: flexcoders@yahoogroups.com
Sent: Thursday, May 29, 2008 2:10 PM
Subject: Re: [flexcoders] the old caching problem... many answers no
solution!!!
Hi Joseph
vo...!!! amazed by how wide can a programmer can see. No sir, i dont work for
military or something.
My only requirement is to make the clients fetch the latest swf instead of
what the browser has cached. Absolutely no problem with swf being getting
stores their. True we need to concentrate upon securing the data rather than
the swf itself. I ll always remember this tip.
But the problem i face at the moment is to make client browser to fetch the
latest version of swf from server and not cached one. The topic is not new and
I have seen various Q's related to this in the archive, but could hardly
understand any.
confused!!!
- Original Message
From: Joseph Balderson [EMAIL PROTECTED]
To: flexcoders@yahoogroups.com
Sent: Thursday, 29 May, 2008 4:56:53 PM
Subject: Re: [flexcoders] the old caching problem... many answers no
solution!!!
All that html metadata does is assure that the HTML code will be
refreshed each and every time the viewer sees the page. But to my
knowledge this does not affect whether a media asset such as a flash
document (SWF) is refreshed on each pageview.
It is impossible to prevent a SWF from apprearing in the browser's cache
folder. But you can insert generate the embed and param tags dynamically
with javascript, and then using something like:
myFile.swf? nocahe=+ (new Date()).getTime( )
(not excatly sure of the syntax, it's been a while)
...you can assure that the browser will load the SWF anew with each page
view/refresh so that the SWF is being fetched from the server each time
versus from the browser cache after the first view. But the file will
still appear in the browser's cache folder no matter what you do,
including runtime loading of a content SWF into a proxy..
I suppose, theoretically you can stream the content SWF from a streaming
server such as Red5 or FMS into a bytearray in a host SWF and convert
the bytecode into usable content, but I've never tried it, and do not
know how you would implement the particulars. This would be the only way
to ensure that the SWF never appears in the browser cache. Usually it's
more important to secure the data in the application than the
application itself. Better to apply a bytecode obfuscator than to go
through all that trouble unless you're doing work for the military or
something.
_ _ _ _ _ _
Joseph Balderson | http://joeflash.. ca
Flex Flash Platform Developer | Abobe Certified Developer Trainer
Author, Professional Flex 3 (coming Winter 2008)
Staff Writer, Community MX | http://communitymx. com/author. cfm?cid=4674
mailamannow wrote:
Hi
Following is the Code available at
http://livedocs. adobe.com/ flex/3/html/ help.html? content=performa
nce_05.html
(1)Where exactly to use it so as to prevent client side caching?
Cache-control: no-cache, no-store, must-revalidate, max-age=-1
Pragma: no-cache, no-store
Expires: -1
(2)is there a better way to prevent that when i m not using php, jsp,
https service, flex data service, and all
the stuff whose tutorials are mostly available when i google for the same.
i simply want my swf not to be cached by the browser. please guide
Thanks
- - --
--
Flexcoders Mailing List
FAQ: http://groups. yahoo.com/ group/flexcoders /files/flexcoder sFAQ.txt
Search Archives: http://www.mail- archive.com/ flexcoders% 40yahoogroups.
comYahoo! Groups Links
--
Meet people who discuss and share your passions. Join them now.
Re: [flexcoders] the old caching problem... many answers no solution!!!
As I mentioned in my previous email, use the following to refer to your
flash SWF file, no backend code required:
myFile.swf?+ (new Date()).getTime( )
You'll need to use it in Javascript tags, such as SWFObject or the
default adobe tags. You can easily modify the index.template.html file
to have Flex Builder include this code in all its html files.
What it does is use js to append a unique number on the end of the
filename, making the browser think it's being asked to get a new file
each and every time, which assures that the browser will always fetch
the file from the server.
___
Joseph Balderson | http://joeflash.ca
Flex Flash Platform Developer | Abobe Certified Developer Trainer
Author, Professional Flex 3 (coming Winter 2008)
Staff Writer, Community MX | http://communitymx.com/author.cfm?cid=4674
amandeepsingh bajwa wrote:
Hi Joseph
vo...!!! amazed by how wide can a programmer can see. No sir, i dont
work for military or something.
My only requirement is to make the clients fetch the latest swf instead
of what the browser has cached. Absolutely no problem with swf being
getting stores their. True we need to concentrate upon securing the data
rather than the swf itself. I ll always remember this tip.
But the problem i face at the moment is to make client browser to fetch
the latest version of swf from server and not cached one. The topic is
not new and I have seen various Q's related to this in the archive, but
could hardly understand any.
confused!!!
- Original Message
From: Joseph Balderson [EMAIL PROTECTED]
To: flexcoders@yahoogroups.com
Sent: Thursday, 29 May, 2008 4:56:53 PM
Subject: Re: [flexcoders] the old caching problem... many answers no
solution!!!
All that html metadata does is assure that the HTML code will be
refreshed each and every time the viewer sees the page. But to my
knowledge this does not affect whether a media asset such as a flash
document (SWF) is refreshed on each pageview.
It is impossible to prevent a SWF from apprearing in the browser's cache
folder. But you can insert generate the embed and param tags dynamically
with javascript, and then using something like:
myFile.swf? nocahe=+ (new Date()).getTime( )
(not excatly sure of the syntax, it's been a while)
...you can assure that the browser will load the SWF anew with each page
view/refresh so that the SWF is being fetched from the server each time
versus from the browser cache after the first view. But the file will
still appear in the browser's cache folder no matter what you do,
including runtime loading of a content SWF into a proxy..
I suppose, theoretically you can stream the content SWF from a streaming
server such as Red5 or FMS into a bytearray in a host SWF and convert
the bytecode into usable content, but I've never tried it, and do not
know how you would implement the particulars. This would be the only way
to ensure that the SWF never appears in the browser cache. Usually it's
more important to secure the data in the application than the
application itself. Better to apply a bytecode obfuscator than to go
through all that trouble unless you're doing work for the military or
something.
_ _ _ _ _ _
Joseph Balderson | http://joeflash.. ca http://joeflash.ca
Flex Flash Platform Developer | Abobe Certified Developer Trainer
Author, Professional Flex 3 (coming Winter 2008)
Staff Writer, Community MX | http://communitymx. com/author.
cfm?cid=4674 http://communitymx.com/author.cfm?cid=4674
mailamannow wrote:
Hi
Following is the Code available at
http://livedocs. adobe.com/ flex/3/html/ help.html? content=performa
nce_05.html
http://livedocs.adobe.com/flex/3/html/help.html?content=performance_05.html
(1)Where exactly to use it so as to prevent client side caching?
Cache-control: no-cache, no-store, must-revalidate, max-age=-1
Pragma: no-cache, no-store
Expires: -1
(2)is there a better way to prevent that when i m not using php, jsp,
https service, flex data service, and all
the stuff whose tutorials are mostly available when i google for the
same.
i simply want my swf not to be cached by the browser. please guide
Thanks
- - --
--
Flexcoders Mailing List
FAQ: http://groups. yahoo.com/ group/flexcoders /files/flexcoder
sFAQ.txt http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ..txt
Search Archives: http://www.mail- archive.com/ flexcoders%
40yahoogroups. comYahoo
http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups
Links
Meet people who discuss and share your passions. Join them now.
http://in.rd.yahoo.com/tagline_groups_7/*http://in.promos.yahoo.com
Re: [flexcoders] the old caching problem... many answers no solution!!!
Why isn't this built into the JavaScript in /html-template, if explorer is
still ignoring the timestamps on .swf files? And what makes .swf files
special? Even explorer can abide by the no-cache and expires headers when
fetching .html
-J
On Fri, May 30, 2008 at 5:57 AM, Joseph Balderson [EMAIL PROTECTED] wrote:
As I mentioned in my previous email, use the following to refer to your
flash SWF file, no backend code required:
myFile.swf?+ (new Date()).getTime( )
You'll need to use it in Javascript tags, such as SWFObject or the
default adobe tags. You can easily modify the index.template.html file
to have Flex Builder include this code in all its html files.
What it does is use js to append a unique number on the end of the
filename, making the browser think it's being asked to get a new file
each and every time, which assures that the browser will always fetch
the file from the server.
__
Joseph Balderson | http://joeflash.ca
Flex Flash Platform Developer | Abobe Certified Developer Trainer
Author, Professional Flex 3 (coming Winter 2008)
Staff Writer, Community MX | http://communitymx.com/author.cfm?cid=4674
amandeepsingh bajwa wrote:
Hi Joseph
vo...!!! amazed by how wide can a programmer can see. No sir, i dont
work for military or something.
My only requirement is to make the clients fetch the latest swf instead
of what the browser has cached. Absolutely no problem with swf being
getting stores their. True we need to concentrate upon securing the data
rather than the swf itself. I ll always remember this tip.
But the problem i face at the moment is to make client browser to fetch
the latest version of swf from server and not cached one. The topic is
not new and I have seen various Q's related to this in the archive, but
could hardly understand any.
confused!!!
- Original Message
From: Joseph Balderson [EMAIL PROTECTED] news%40joeflash.ca
To: flexcoders@yahoogroups.com flexcoders%40yahoogroups.com
Sent: Thursday, 29 May, 2008 4:56:53 PM
Subject: Re: [flexcoders] the old caching problem... many answers no
solution!!!
All that html metadata does is assure that the HTML code will be
refreshed each and every time the viewer sees the page. But to my
knowledge this does not affect whether a media asset such as a flash
document (SWF) is refreshed on each pageview.
It is impossible to prevent a SWF from apprearing in the browser's cache
folder. But you can insert generate the embed and param tags dynamically
with javascript, and then using something like:
myFile.swf? nocahe=+ (new Date()).getTime( )
(not excatly sure of the syntax, it's been a while)
...you can assure that the browser will load the SWF anew with each page
view/refresh so that the SWF is being fetched from the server each time
versus from the browser cache after the first view. But the file will
still appear in the browser's cache folder no matter what you do,
including runtime loading of a content SWF into a proxy..
I suppose, theoretically you can stream the content SWF from a streaming
server such as Red5 or FMS into a bytearray in a host SWF and convert
the bytecode into usable content, but I've never tried it, and do not
know how you would implement the particulars. This would be the only way
to ensure that the SWF never appears in the browser cache. Usually it's
more important to secure the data in the application than the
application itself. Better to apply a bytecode obfuscator than to go
through all that trouble unless you're doing work for the military or
something.
_ _ _ _ _ _
Joseph Balderson | http://joeflash.. ca http://joeflash.ca
Flex Flash Platform Developer | Abobe Certified Developer Trainer
Author, Professional Flex 3 (coming Winter 2008)
Staff Writer, Community MX | http://communitymx. com/author.
cfm?cid=4674 http://communitymx.com/author.cfm?cid=4674
mailamannow wrote:
Hi
Following is the Code available at
http://livedocs. adobe.com/ flex/3/html/ help.html? content=performa
nce_05.html
http://livedocs.adobe.com/flex/3/html/help.html?content=performance_05.html
(1)Where exactly to use it so as to prevent client side caching?
Cache-control: no-cache, no-store, must-revalidate, max-age=-1
Pragma: no-cache, no-store
Expires: -1
(2)is there a better way to prevent that when i m not using php, jsp,
https service, flex data service, and all
the stuff whose tutorials are mostly available when i google for the
same.
i simply want my swf not to be cached by the browser. please guide
Thanks
- - --
--
Flexcoders Mailing List
FAQ: http://groups. yahoo.com/ group/flexcoders /files/flexcoder
sFAQ.txt
http://groups.yahoo.com/group/flexcoders/files
