How to detect if browser's cache is full

[nsimeonov]

Hello,

Does anyone have any idea how Gmail does this? I have a web application

and people complain sometimes about some problems and most of the time
it turns out it's the browser's cache being full. The application
doesn't do anything really fancy and all it does is to set a cookie. I
did a search and couldn't find anything except people explainin how I
shouldn't do that. Even if the users have to add the server to the
trusted zone it's ok because it's an intranet application. btw. I'm
speaking of a MS shop, so everyone is using IE if that matters. Even if

Mozilla doesn't support that functionality or doesn't have any problems

with it - I don't care at this point because my users are using IE
99.9999% of the time and searching for bugs on places where they don't
exist is wasting my time.

Thanks,
Nick

[Erwin Moller]

ns*******@gmail .com wrote:

Hello,

Does anyone have any idea how Gmail does this? I have a web application

and people complain sometimes about some problems and most of the time
it turns out it's the browser's cache being full.
What?
What on Earth makes you think that 'problems' are caused by browsers cache
that is full?
I do not believe that explanation at all.
Back up that claim with some proof.
The application doesn't do anything really fancy and all it does is to set a cookie. I
did a search and couldn't find anything except people explainin how I
shouldn't do that. Even if the users have to add the server to the
trusted zone it's ok because it's an intranet application. btw. I'm
speaking of a MS shop, so everyone is using IE if that matters. Even if

Mozilla doesn't support that functionality or doesn't have any problems

with it - I don't care at this point because my users are using IE
99.9999% of the time and searching for bugs on places where they don't
exist is wasting my time.
So why should I care and help you?
I am that 0.00001% that uses Firefox.

Like your first story: I do not believe this either.

You know-it-all attitude doesn't reflect your actual knowledge.

Regards,
Erwin Moller

Thanks,
Nick

[Jessica Parker]

Erwin Moller wrote:
I'm

speaking of a MS shop, so everyone is using IE if that matters. Even if

Mozilla doesn't support that functionality or doesn't have any problems

with it - I don't care at this point because my users are using IE
99.9999% of the time and searching for bugs on places where they don't
exist is wasting my time.

So why should I care and help you?
I am that 0.00001% that uses Firefox.

You're one of his users? What an amazing coincidence.

To the OP: Sorry, I don't know how to help you, but I hope someone can
without being a snob! Good luck.
-A faithful firefox users who doesn't work for you.

[Jessica Parker]

Jessica Parker wrote:

-A faithful firefox users who doesn't work for you.

Erg...*with* you.

[Ian Collins]

Erwin Moller wrote:

ns*******@gmail .com wrote:

Hello,

Does anyone have any idea how Gmail does this? I have a web application

and people complain sometimes about some problems and most of the time
it turns out it's the browser's cache being full.

What?
What on Earth makes you think that 'problems' are caused by browsers cache
that is full?
I do not believe that explanation at all.
Back up that claim with some proof.

Interesting aside, I was unable to login to my online banking account
the other day. When I called the bank, the first thing they asked was
"are you using Firefox?", when I said yes, the response was "your cache
is full, clear the cache and restart". This cleared the problem.

Unfortunately the help desk person was unable to explain why the problem
occurs.

--
Ian Collins.

[Jessica Parker]

Ian Collins wrote:

Erwin Moller wrote:

ns*******@gmail .com wrote:

Hello,

Does anyone have any idea how Gmail does this? I have a web application

and people complain sometimes about some problems and most of the time
it turns out it's the browser's cache being full.

What?
What on Earth makes you think that 'problems' are caused by browsers cache
that is full?
I do not believe that explanation at all.
Back up that claim with some proof.

Interesting aside, I was unable to login to my online banking account
the other day. When I called the bank, the first thing they asked was
"are you using Firefox?", when I said yes, the response was "your cache
is full, clear the cache and restart". This cleared the problem.

Unfortunately the help desk person was unable to explain why the problem
occurs.

--
Ian Collins.

All browsers have cache...

There is a meta tag to tell the browser NOT to cache a page.
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1"> (Add this second line for IE).

Not sure if this would help with the original problem, but it took me
two seconds to find on google.

[Randy Webb]

Jessica Parker said the following on 6/11/2006 11:02 PM:

Ian Collins wrote:

Erwin Moller wrote:

ns*******@gmail .com wrote:
Hello,

Does anyone have any idea how Gmail does this? I have a web application

and people complain sometimes about some problems and most of the time
it turns out it's the browser's cache being full.

What?
What on Earth makes you think that 'problems' are caused by browsers cache
that is full?
I do not believe that explanation at all.
Back up that claim with some proof.

Interesting aside, I was unable to login to my online banking account
the other day. When I called the bank, the first thing they asked was
"are you using Firefox?", when I said yes, the response was "your cache
is full, clear the cache and restart". This cleared the problem.

Unfortunately the help desk person was unable to explain why the problem
occurs.

--
Ian Collins.

All browsers have cache...

There is a meta tag to tell the browser NOT to cache a page.
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1"> (Add this second line for IE).

Not sure if this would help with the original problem, but it took me
two seconds to find on google.

How long did it take you to find the explanation of why those two meta
tags are useless and futile to use?

--
Randy
comp.lang.javas cript FAQ - http://jibbering.com/faq & newsgroup weekly
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/

[Jessica Parker]

Randy Webb wrote:

Jessica Parker said the following on 6/11/2006 11:02 PM:

Ian Collins wrote:

Erwin Moller wrote:
ns*******@gmail .com wrote:
> Hello,
>
> Does anyone have any idea how Gmail does this? I have a web application
>
> and people complain sometimes about some problems and most of the time
> it turns out it's the browser's cache being full.

What?
What on Earth makes you think that 'problems' are caused by browsers cache
that is full?
I do not believe that explanation at all.
Back up that claim with some proof.

Interesting aside, I was unable to login to my online banking account
the other day. When I called the bank, the first thing they asked was
"are you using Firefox?", when I said yes, the response was "your cache
is full, clear the cache and restart". This cleared the problem.

Unfortunately the help desk person was unable to explain why the problem
occurs.

--
Ian Collins.

All browsers have cache...

There is a meta tag to tell the browser NOT to cache a page.
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1"> (Add this second line for IE).

Not sure if this would help with the original problem, but it took me
two seconds to find on google.

How long did it take you to find the explanation of why those two meta
tags are useless and futile to use?

--
Randy
comp.lang.javas cript FAQ - http://jibbering.com/faq & newsgroup weekly
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/

Apparently I was wrong - the snobs are out in full blast eh?

[Bart Van der Donck]

Jessica Parker wrote:

[...]
There is a meta tag to tell the browser NOT to cache a page.
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1"> (Add this second line for IE).

Apparently I was wrong -

Yes you are. And even if you were right, you forgot:

<META HTTP-EQUIV="cache-control" CONTENT="no-cache">

--
Bart

[Jim Carlock]

"Jessica Parker" <je******@gmail .com> wrote:
Jessica Parker said the following on 6/11/2006 11:02 PM:

All browsers have cache...

There is a meta tag to tell the browser NOT to cache a page.
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1"> (Add this second line for IE).

Not sure if this would help with the original problem,
but it took me two seconds to find on google.
That's kind of a snobby statement about the amount of time
it took to find your answer. But you did bring up a good
topic. I see that your answer can't be applied for the follow-
ing reasons:
(1) It didn't answer the question of how to detect if the
cache is full.
(2) It's a server side thing to put the statements into the html
content. Furthermore, I believe it's used more as a proxy
thing, telling proxy servers how and what to cache. I believe
browsers cache everything and to prove this, browsers seem
to provide a way to to display the html content and save the
HTML content, although I've seen some fancy javascript
stuff which tries to get rid of such capabilities and some end
users frown on such tactics.

Randy Webb wrote: How long did it take you to find the explanation of why
those two meta tags are useless and futile to use?

I'm interested in hearing what others have to say about
why it's useless and what makes it useless. Am I correct
in leaning into the meta pragma cache tags as something
for proxy servers? Search engines don't seem to honor
those tags, so they don't seem to apply to search engines,
although they might provide a hint on how many times the
spiders should visit. <g>

--
Jim Carlock
Post replies to the group.