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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2
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1answer
27 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 ...
1
vote
1answer
13 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
1answer
20 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 ...
0
votes
0answers
15 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
26 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
0answers
16 views

Caching seems to hide images on reload [closed]

I've started optimizing my site using PageSpeed and it told me to allow caching and to add gzip compression. I looked up a few tutorials and ended up with this code: <IfModule mod_expires.c> ...
0
votes
1answer
18 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
127 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
873 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
484 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
6 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
15 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
40 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
123 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
44 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
415 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
37 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
42 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
36 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
151 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
54 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 ...
227
votes
42answers
20k 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
287 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
0answers
36 views

Make a particular section of a webpage appear at the top of Google's cached text only version

I would like to make a particular content of my webpage that appears at the bottom to appear on top on webcache of Google (text only version). eg: http://salesforce.com has a slider content that ...
1
vote
1answer
344 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'); ...
12
votes
2answers
20k 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
49 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
319 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
29 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
89 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
99 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
30 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
161 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
50 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 ...
1
vote
1answer
15 views

Ad revenues via Google cache

Do ad revenues from page-views (as opposed to ad-clicks) accrue from webpages viewed via Google cache?
1
vote
1answer
35 views

Values for saved data and saved requests much lower in CloudFlare analytics for several months

For several months now the pie charts in my CloudFlare analytics show a much smaller value for the saved data and saved requests (around 5%). Before this the pie charts showed a saving of around 50% ...
0
votes
1answer
55 views

Will previous 301 redirect still be cached if site switches to using SSL?

For reasons only my past self knows I put a 301 redirect in place to force all traffic to example.org from www.example.org. Put simply it dropped the www. subdomain. Now I would like to change it so ...
2
votes
1answer
77 views

Best way to optimize joomla cache. Difference between Global configuration cache and system cache plugin

I need to know for a Joomla site there is system cache plugin then there is global configuration setting to enable cache - how is it different from system cache plugin below are some of ...
1
vote
2answers
44 views

Can I place a caching server in a remote location?

Let's say I have one server acting as HTTP and MySQL server located in the UK, and I want to add a caching server, for example, Redis or Memcached. Can I add a caching server which is located in the ...
1
vote
1answer
467 views

CloudFlare - Difference between Basic, Simplified, and Aggressive caching

CloudFlare has this page to explain the difference between their caching settings: https://support.cloudflare.com/hc/en-us/articles/200168256. However, I'm still confused. It says: Basic: ...
1
vote
1answer
30 views

Can websites appear differently to different internet networks?

I just began launching a site for one of my clients, but I've come across a very strange issue. Whenever the client tries to access the website from an internet capable device in his office, he gets ...
2
votes
1answer
71 views

How long before legacy 302s are recognised as 301s?

We have some legacy 302 redirects in place on our site that should have always been 301s. We've now changed the redirects to 301s but various SEO tools (and presumably Google) still see the 302 ...
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
2answers
3k views

Clearing cache with CloudFlare?

Is it possible to clear or avoid CloudFlare cache while doing development? I'm developing a site that has caching on several levels - WordPress supercache, the caching done by the browser, and ...
1
vote
1answer
51 views

How to cache on CloudFlare images that are served to client as JSON?

I am using a gallery on my website that gets list of images from a JSON sent by a php script. So, the javascript gallery calls PHP backend and it replies with complex JSON where images are specified ...
2
votes
1answer
756 views

Why doesn't FireFox cache my JavaScript file?

I've been trying to figure out why Firefox does not cache my JavaScript file. I don't have this issue with Chrome or IE. Here is what my server's Response Header looks like: ...
2
votes
1answer
280 views

Why is CakePHP generating unrequested 301 redirects?

Seemingly at random, when I attempt to go to a webpage (such as /want), another webpage (such as /get) on the same subdomain is loaded in response. This has been happening for many months on a set of ...
7
votes
3answers
369 views

Why don't browsers respect cache headers for initial page request?

I'm scratching my head a bit on this. A Drupal site I run is setting appropriate cache headers that should indicate that the page can be cached for 15 minutes. However, every time I hit the page it ...