Cache Control Headers

rubyonrails-talk
1

I am using a controller to serve up CSS. I am having a problem with browsers not caching the CSS and think it is related to the Cache- Control header. I tried the following, but the browsers still will not cache:

headers['Cache-Control'] = 'public'

Any ideas?

Thanks, Tom

2

2 questions:

1) do you have caching disabled (sorry but tech support always has to know if the computers plugged in). 2) If in firefox you go to Tools/page_info what are the values of:

-Cache Source -Expires -Meta

3

Thanks so much for looking into this with me! I'm getting desperate.

2 questions:

1) do you have caching disabled (sorry but tech support always has to know if the computers plugged in).

Yes, and have a used all browsers with the same the results.

2) If in firefox you go to Tools/page_info what are the values of:

All of the results are taken from looking at the information on the css being linked on the page using the following link:   <link href="/css/colorpicker.css" media="screen" rel="stylesheet" type="text/css" />

The following results are using the Rails default headers:   Cache Source: Disk cache   Expires: Not specified   Meta: [nothing]

  Also, the response headers (according to the web developer plugin):     Status: 304 Not Modified     X-Runtime: 0.08278     Etag: "aeafc040943fac69eb986a0f90e79063"     Cache-Control: private, max-age=0, must-revalidate     Server: Mongrel 1.0.1     Content-Type: text/css; charset=utf-8     Content-Length: 2452     200 OK

The following results are after I have switched the headers['Cache- Control'] to 'public':   Cache Source: Disk cache   Expires: Not specified   Meta: [nothing]

  Also, the response headers (according to the web developer plugin):     Status: 304 Not Modified     X-Runtime: 0.08174     Etag: "aeafc040943fac69eb986a0f90e79063"     Cache-Control: public     Server: Mongrel 1.0.1     Content-Type: text/css; charset=utf-8     Content-Length: 2452     200 OK

4

I'm having the same problem. I'm working on an app and deploying to a development server and I noticed recently that css background images are being reloaded on every page request. At first I thought it was my browser but then I checked the headers and I find that they're not allowing caching:

Server: nginx/0.5.26 Content-Type: text/html; charset=utf-8 Status: 304 Not Modified X-Runtime: 0.01267 Etag: "fd433ad7994a671e38210f06ac18cfbf" Cache-Control: private, max-age=0, must-revalidate Content-Encoding: gzip

200 OK

I'm not sure whether to change the Rails config or the Ngninx server config? Which would be correct? I'm not sure where this header is being set so I don't know where to tackle the problem.