A cache is a local copy of a file that exists elsewhere. Caching can take place in the browser, on a dedicated machine on a network, or at an ISP.

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3
votes
1answer
131 views

Can server break clients' cache settings?

I have disputed a domain name to a cybersquatter that I expect to recover soon. The problem is that the cybersquatter has changed the cache headers and now every user who already visited the site or ...
0
votes
1answer
193 views

Clear the cache of the last visited page

I have an HTML page that has shows if a server is online of offline via an IFRAME transcluding a php file. If someone clicks on a link, like to turn the server on or off and presses the Back button ...
2
votes
1answer
215 views

Set expiry date for image or resource

How do I set expiry date for an image? Is this a server side operation or can it be done as an html tag attribute? What if I only want to set different expiry dates for different images/resources?
0
votes
1answer
1k views

Leverage browser caching and Specify a cache validator?

http://gtmetrix.com/reports/enji.se/RVzr15zT That's what my result looks like! Does anyone know how to fix Leverage browser caching and Specify a cache validator? I've googled it but didn't find ...
1
vote
1answer
137 views

Retrieve static webpage on client cache from dynamic content

I was developing a website on a certain web host and they lost everything. They told me their disks crashed and even the backup are unretrievable. I am mad. As I was often accessing my website ...
3
votes
1answer
594 views

Index of Content on a Defunct Website/Blog

Is there a way to find the content on a defunct website or blog? How do you find the content that was on a website from two or three years back? Google cache doesn't appear to hold information from ...
6
votes
2answers
3k views

Cache external static scripts?

In my never ending quest for a faster website, I thought perhaps I could cache some scripts. I'm using Yslow to rate my site, everything is pretty much A (which is great, our website on Pingdom loads ...
1
vote
1answer
412 views

How to refresh Google Reader cache for a specific domain

Brief history domain.com was associated with a blogspot. domain.com changed to an institutional site and features a small code instructing which file should be retrieved by RSS readers. <link ...
3
votes
1answer
143 views

Problem with browser caching images

I'm sure many site admins must deal with this sort of problem all the time, but I don't have a really good and simple solution myself. It is what happens when you overwrite an existing image on the ...
1
vote
5answers
163 views

Website caching site

Google and archive.org both cache/archive sites, however neither of them are fast enough and they don't cache everything. Is there some site where you can input a url and it will go grab it and store ...
2
votes
2answers
2k views

Domain expired- possible to find content that was on websites?

I had a domain that I let expire, and was subsequently purchased by someone else. I have several links on my website that are now directed towards their new site. I was wondering if it is possible to ...
3
votes
3answers
322 views

Getting google to reindex faster

We run a high-traffic site for a large organization and it was compromised through an editor account. The attacker was able to poison the google cache, and the visible result to us is that if you ...
2
votes
1answer
364 views

Downloaded file is from stale cache

I've FTPed a new installer file (for an app I'm maintaining) up to a server on the web, replacing the old installer file. My boss has already sent an email to our users saying "get the new installer ...
1
vote
2answers
38 views

Confusing caching issue-DNS

Yesterday I changed my DNS servers to point to a different server. This change has still not been displayed on my own computer, but it does from other computers around the world (checked using ...
2
votes
1answer
123 views

Caching preventing users seeing site updates

I'm experiencing a caching issue I can't explain. This is happening across browsers, IPs and ISPs. If a user force-refreshes, they see the new content. If they then refresh or return to the page, the ...
3
votes
1answer
186 views

Image not updating for some users

I don't know if this is the best practice, but we added an image with a snow delay for our school. For some users the image wouldn't come up. Is this a matter of the browser or something else? I had ...
0
votes
1answer
263 views

google cache grabber [duplicate]

Possible Duplicate: How to recover a website from google cache? Does anyone know a script to grab all contents of a site from google cache?
2
votes
2answers
99 views

How to explain visitors that we don't control Google's results?

I have a message boards. Once in a while, some people contact us to remove anything related to them. We comply and delete all the posts and all traces. Some of those visitors still complain that they ...
1
vote
1answer
69 views

With the following settings shown here, will there be any caching in Firefox?

browser.cache.disk.enable = false browser.cache.memory.enable = false network.http.use-cache = true With the following settings above, will there be any caching in FF? Does the disk.enable and ...
1
vote
1answer
271 views

Why does IE still save and update files in the temp folder when caching is off?

In IE I changed the cache setting to "Every time I visit the web page" However, I noticed in the directory \Local Settings\Temporary Internet Files that the files are still being stored in here ...
2
votes
1answer
500 views

Problem with Expires/Cache-Control Headers

I'm using Apache 2.2.16. I've got the following HTML file in my htdocs folder: <html> <link media="screen" type="text/css" href="/css/test.css" rel="stylesheet" /> ...
15
votes
4answers
33k views

How do I set expiration headers for CSS, JS, and Images?

I have recently analysed my website with pagespeed addon on firebug. It suggested me to set expiration on CSS, JS and image files. I am wondering how do i do this?
5
votes
1answer
2k views

Can I expect browsers to cache static content served over SSL encryption?

With all the talk about FireSheep I am thinking of switching my web applications to use full https accross the entire site. However, I am concerned about caching. I use a lot of JavaScript, CSS files, ...
4
votes
2answers
2k views

Does Google cache stylesheets?

Hey guys, we all know that Google caches the HTML of pages, but does it cache the corresponding CSS as well? I ask because a site I used to have and have since closed down is still in the cache and ...
5
votes
1answer
933 views

No mod_expires or mod_headers in apache, how can I cache images/js/css files?

Title says it all, we do not have control over our server environment and although we can request for them to recompile apache for us it will not happen overnight. Is there anything we can do is ...
7
votes
6answers
709 views

drupal site speed increase

I'm using a drupal site with a theme from rockettheme. The users are member users. The problem is for unknown reason the site is very slow. Takes around 20 seconds to open the page. I have tried ...
4
votes
1answer
1k views

How to fix “Leverage browser caching” error from Page Speed plugin

I'm using the Page Speed Firebug plug-in to check my sites. But I don't know how to fix the "Leverage browser caching" error, since I don't know you specify a cache lifetime to the browser in images ...
1
vote
3answers
80 views

What type of websites shouldn't use a cache?

Is there ever a time when you should use caching? Like for frequently updated pages? Or, should you always cache? Please give examples and reason?
10
votes
2answers
195 views

Control over the Internet Archive besides just “Disallow /”?

Are there any mechanisms to control what the Internet Archive archives on a site? I know to disallow all pages I could add: User-agent: ia_archiver Disallow: / Can I tell the bot that I want them ...
16
votes
1answer
289 views

How do I prevent Google from serving a cached version of my site?

From what I understand I can tell Google to remove pages from their archive if I add the header: <meta name="ROBOTS" contents="NOARCHIVE" /> But won't this also remove the page from search ...
4
votes
2answers
198 views

How can I cause a browser to download a new copy of a web page when it thinks that its cached copy is still valid?

Sometimes when I make small changes to a website, I notice that certain browsers are very stubborn about downloading the page again. Both F5 and CTRL-R are worthless and the only way to fix it is to ...
1
vote
1answer
1k views

Is there any way to invalidate all memcache entries that begin with “User*”?

I recently made a change to my User class (which is memcached); is there any way I can invalidate all entries whose key begins with User without invalidating the entire cache? If not are there any ...
224
votes
42answers
16k views

Recovering a lost website with no backup?

Unfortunately, our hosting provider experienced 100% data loss, so I've lost all content for two hosted blog websites: http://blog.stackoverflow.com http://www.codinghorror.com (Yes, yes, I ...