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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0
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3answers
53 views

I do not want my website to be cached

I own a website that will be updated daily with clients. When I upload new info/web pages/amendments, the old cached version of the 1st page keeps popping up. How do I stop this....
7
votes
3answers
2k views

Why don't browsers have jQuery installed?

I'm using jQuery on several of my websites and although I use a CDN to serve it, it just doesn't make sense for visitor to download jQuery each time. jQuery must be the world's most widely used ...
2
votes
2answers
47 views

Caching a changing site

I run a website where the static content changes at least 4 times a week and I'm trying to figure out the best header arrangement to use. Currently I have all caching related headers in use. I have ...
4
votes
1answer
4k views

“404. That’s an error.” when viewing from Google cache

My site is getting 404. That’s an error. message when I click on cached from Google search results. This is the error message from Google: That’s an error. The requested URL ...
2
votes
1answer
78 views

.htaccess file not caching

I have read several guides for how to write the htaccess file for caching but with no success. I asume I wrote something wrong and need some help on finding what i did wrong. Here's my htaccess file: ...
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 ...
1
vote
0answers
30 views

Magento Robots.txt and blocking cached images

We have a Magento based store. Images are resized and served cached dynamically. When the image cache in Magento is cleared, there are generated new paths and files. And I get 404 errors for them ...
0
votes
1answer
59 views

How much privacy is disclosed when looking at Google cached pages?

I have a question on something I read in the article found at this URL: http://navigators.com/cached.html "Many internet researchers incorrectly assume that clicking on Google's "cached" in a search ...
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
1answer
63 views

How to manage the leverage browser caching for third party JS files? [duplicate]

Is it possible to set and expiration date for the file http://assets.pinterest.com/js/pinit_main.js? And the other stuff down the list? I want to bring up my score as high as possible. I'm using ...
0
votes
1answer
27 views

Eliminating 'cookie' from 'vary:' without breaking website functionality

I read that some middle-man servers won't cache websites that have cookie set in the vary: header. For example, If my website issues a vary:accept-encoding,cookie as opposed to vary:accept-encoding ...
0
votes
1answer
20 views

How can I keep track of changes in my site's view?

I want to keep track of changes in our company's website view. I want to know about changes to links and pictures in the homepage. I don't need to keep track of website's development, e.g I don't want ...
0
votes
0answers
47 views

Caching layer with DynamoDB?

I am programming a cloud web hosting website. All pages we host are created with our page creator software and they are only html and JavaScript. I am currently storing web pages in a mysql database ...
1
vote
2answers
68 views

When do browsers clear cache and how can I make more use of 304 responses?

I have a website with some some content which changes frequently. I would like to benefit from good caching when this doesn't change (so would ideally use a longer Cache-Control header), but would ...
1
vote
1answer
71 views

How do I make a static html page and its resources cacheable?

I just ran a pagespeed analysis of my page and came across the following pointer by google pagespeed: Leverage browser caching Setting an expiry date or a maximum age in the HTTP headers for ...
1
vote
3answers
87 views

Image max-age / cache-control not being set

In order to speed up my site Telium I created the .htaccess below. I have a lot of large images on my site so I want browsers to cache as much as possible. However, when I browse to my web site ...
0
votes
0answers
46 views

NGinx Downloading instead of Serving

I have nginx setup on my ubuntu server as the web server with 3 config files (minus the site configs) All of my sites now download a application/octet-stream file rather than serving up the pages. ...
1
vote
0answers
15 views

What can I do in regards to the GPSI complaint on cache-control on dynamic images?

I ran google page-speed tests on my website again and it stated this... Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously ...
1
vote
1answer
52 views

Minify not caching according to pagespeed insights

I started using https://code.google.com/p/minify/ on my site to decrease the amount of http requests. But google's PageSpeed insights tool is telling me that the new reference link isn't being cached. ...
0
votes
0answers
56 views

How long does it take to re-index the website via noarchinve tag?

I read elsewhere on here that one can't re-index their site with google, but I like to challenge that. Currently, I have every page on my website (that contains about 1,000,000 pages) labeled with a ...
1
vote
1answer
78 views

How do I prevent cached pages from showing up to returning visitors after doing a website update?

After making an update to my site's pages, I don't want the cached version of the old page to show up to returning visitors. Is there a way to do this from my side, without the user having to do a ...
0
votes
1answer
33 views

what would cause incorect titles to be listed in google?

I did a search for my site and it turns out that google showed an entry with an incorrect title, yet the description is ok. The title was incorrect to the point where it was called "the album" with ...
3
votes
2answers
198 views

What's the minimum age for a Cache-Control header with Akamai?

We're planning an integration with a CDN (likely Akamai) and are trying to determine how low we could go for a max-age value. For a site that could get a few hundred thousand folks hitting the site ...
2
votes
4answers
964 views

How to make CloudFlare Cache all pages

CloudFlare seems to only cache my homepage, and I am wondering if there is a way to force it to cache all pages. Notice it when BlueHost went down today and only my homepage is cached by CloudFlare. ...
4
votes
3answers
560 views

What effect does turning off caching in all browsers have on SEO?

What effect does turning off caching in all browsers have on SEO?
0
votes
0answers
16 views

100% loss of my website content. I couldn't find cached pages on the net. Need help, please! [duplicate]

I had a website that I actively used from about 2/2014 through 10/2014. The site is www.tatumparnell.com. It was a collection of personal stories which mean the world to me, but the site is now down ...
0
votes
0answers
14 views

How to view varnish purge requests?

I would like to view purge requests from the backend to debug whether the backend sends too many purge requests due to some issue. How can I do that with varnish? Somehow with varnishlog?
0
votes
1answer
41 views

How to intepret varnishtop output?

When running. varnishtop -i BereqURL Output such as. 2.57 BereqURL url Will be shown. What does the number, in this example 2.57 stand for?
2
votes
1answer
52 views

For SEO, can content containing keywords be written into the page using JavaScript and still rank well?

We have a list of product summaries that appear on several different product listing sections of our website. Currently, these products are rendered into the HTML, and end up in different caches ...
8
votes
1answer
135 views

Why is spam added to the Bing cache of my landing page?

Please search on Bing "url:testrails.org" and open the cached page. Bing shows random other pages below the content of my own landing page. This is so weird! This is what I found out so far: I have ...
1
vote
0answers
62 views

What is the best way to invalidate an entire Amazon CloudFront cache or recreate the entire distribution?

After asking this question, I have decided to recreate some CloudFront distributions, as so many files need to be invalidated. But instead of creating a new distribution, is it possible to just ...
3
votes
2answers
769 views

CloudFlare Not Sending If-Modified-Since Headers

I'm trying to reduce my server load by providing 304 Not Modified responses for content where appropriate. CloudFlare is my middle man, so they should be sending If-Modified-Since headers whenever a ...
1
vote
1answer
52 views

Can I use Cloudflare with Tumblr or cache images manually?

I've just setup Cloudflare on my tumblr blog (with custom domain). 1) As I understand it, this was actually pointless because images on tumblr blogs are hosted on media.tumblr.com/.../inline.jpg and ...
1
vote
0answers
64 views

mod_cache always stores cached files served over HTTPS with “443” in the file name which causes caching not to work well

The config file: <IfModule mod_cache.c> <IfModule mod_disk_cache.c> CacheRoot /var/cache/mod_cache CacheEnable disk / CacheDirLevels 5 CacheDirLength 2 ...
1
vote
0answers
62 views

Set cache control from WAMP such that Firefox reports cached pages in the primed cache report

So I tried to allow cache by using <meta http-equiv="Cache-control" content="public, max-age=31536000"> but I'm not sure if the content of my pages are actually being cached. Although I ...
1
vote
2answers
332 views

Can external resources be cached for 7 days to improve my PageSpeed score?

Google Pagespeed recommends caching resources for at least a week under "Leverage browser caching". I've done it for internal files but I was wondering if something could malfunction if I did the same ...
1
vote
2answers
102 views

Cached Bootstrap vs Custom CSS

I am debating whether to use an existing framework such as Bootstrap which has a decent chance of being cached vs custom CSS which has zero chance of being cached. Which is better from a UX point of ...
2
votes
2answers
1k views

Why is my website cached so aggressively?

Whenever I update my website by uploading a new index.html or index.php, it always takes a long time (e.g. hours or days) for that change to propagate to my browser. Even when I hit F5, I still get ...
228
votes
42answers
23k 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 ...
1
vote
1answer
501 views

Can .htaccess be used to cache AdSense JavaScript to improve the pagespeed score?

I'm AdSense publisher and I need to improve the page speed score for my site. It already gets 90/100 for speed and 100/100 for User Experience, however Google AdSense code is preventing it from ...
1
vote
1answer
443 views

No cache and Google AdSense performance

I'm developing a page where I need to avoid JavaScript caching by browser. I've added this header: <?php header('Cache-Control: no-cache, no-store, must-revalidate'); header('Pragma: no-cache'); ...
16
votes
2answers
24k views

Headers to prevent 304/If-modified-since/HEAD requests

What headers should I be sending to outright stop all requests to the server after the content has been cached? We have a very high latency server (Sigh, VMWare) so even sending a HEAD request to the ...
2
votes
1answer
75 views

Where are cached files stored by the W3 total cache plugin?

I am planning to use caching for my website (W3 total cache plugin) and I was wondering whether the cached files will be save on visitors personal computers or not? I know that browsers also use ...
2
votes
2answers
377 views

Why does modx-based site start using different domains for some content?

situation I have a modx site on a VPS with multiple domain and subdomain names. The modx site should use what I call the 'primary' domain name's 'primary' subdomain, ie www.intendedname.tld . The ...
0
votes
1answer
43 views

loading old web pages and not the updated ones

I have updated my design and uploaded it to my server, but it's showing old content for sometime, new content for sometime. I randomly checked lots of computer, same problem is happening everywhere.
1
vote
2answers
131 views

I'm receiving an “Account Suspended Page” when trying to accessing my VPS

I have a VPS account and host a handful of sites. Two of these sites I cannot view from specific computers. When I open the sites I get the account suspended page. See screenshot below. Here is ...
2
votes
1answer
146 views

How to force browser to download all static files every time?

Is it possible to force browser to not using cache and download all files (html/js/css) every time? I am looking for a server side solution.
0
votes
1answer
33 views

Preventing Cache for Text Content but not for CSS files and Images

I have Wordpress blog that I write blog posts about javascript. I update the same post by generally 12-13 days or so. But sometimes I push updates daily. After I update my article and publish to ...
1
vote
1answer
218 views

Google PageSpeed, optimizing Google's own elements

I'm trying Google's PageSpeed online service Ironically, it's primarily highlighting Google's own services as something that needs improvement on my site 1) jQuery from Google: blocking. So I moved ...
2
votes
1answer
53 views

CDN caching my HTML pages too!

Recently I started using Amazon CloudFront to serve my site's JS,CSS and images via CDN. However, seems like with those, CloudFront serving my HTML pages as well? Thus http://mydomain.com and ...