# FLV cache headers? **URL:** \ **Category:** NGINX\ **Created:** [December 29, 2011, 8:26pm UTC](https://www.ruby-forum.com/t/flv-cache-headers/215303 "2011-12-29T20:26:05Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Post date:** [December 29, 2011, 8:26pm UTC](https://www.ruby-forum.com/t/flv-cache-headers/215303/1 "2011-12-29T20:26:05Z")
Can FLV files be cached to the browser? I’m passing the “expires max” tag which looks like its working as this is the response header: HTTP/1.1 200 OK Server: nginx/1.1.12 Date: Thu, 29 Dec 2011 19:13:09 GMT Content-Type: video/x-flv Content-Length: 8919417 Last-Modified: Thu, 29 Dec 2011 04:13:19 GMT Connection: keep-alive Expires: Thu, 31 Dec 2037 23:55:55 GMT Cache-Control: max-age=315360000 Accept-Ranges: bytes but when I look in Firebug, there’s no cache header and reloading the page, well, reloads the file. Can anyone explain? are FLV files not cacheable by browsers as they are considered streams? Thanks ---
**Author:** ![iberci](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/a3d4f5/32.png) [@iberci](https://www.ruby-forum.com/u/iberci)\ **Post date:** [December 31, 2011, 12:04pm UTC](https://www.ruby-forum.com/t/flv-cache-headers/215303/2 "2011-12-31T12:04:24Z")
Hello! On Thu, Dec 29, 2011 at 02:25:35PM -0500, Ilan B. wrote: > Expires: Thu, 31 Dec 2037 23:55:55 GMT > Cache-Control: max-age=315360000 > Accept-Ranges: bytes > > but when I look in Firebug, there’s no cache header and reloading the > page, well, reloads the file. > > Can anyone explain? are FLV files not cacheable by browsers as they > are considered streams? I suspect the problem isn’t browsers, but Flash. Maxim D. ---
**Author:** ![iberci](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/a3d4f5/32.png) [@iberci](https://www.ruby-forum.com/u/iberci)\ **Post date:** [December 31, 2011, 12:50pm UTC](https://www.ruby-forum.com/t/flv-cache-headers/215303/3 "2011-12-31T12:50:13Z")
Afaik Flash _should_ support that way of caching, at least if not requested via ?start=xx (when seeking). I think you should not set a caching value of more than a year in max-age and Expires headers (it barely makes sense anyway). Also its probably a good idea to use the same caching value in both Expires and max-age headers, so you have consistent behavior on the client side. In this request you set max-age to 10 years and Expires to 2037 (26 years). Date: Thu, 29 Dec 2011 14:25:35 -0500 Subject: FLV cache headers? From: removed\_email\_address@domain.invalid To: removed\_email\_address@domain.invalid Can FLV files be cached to the browser? I’m passing the “expires max” tag which looks like its working as this is the response header: HTTP/1.1 200 OK Server: nginx/1.1.12 Date: Thu, 29 Dec 2011 19:13:09 GMT Content-Type: video/x-flv Content-Length: 8919417 Last-Modified: Thu, 29 Dec 2011 04:13:19 GMT Connection: keep-alive Expires: Thu, 31 Dec 2037 23:55:55 GMT Cache-Control: max-age=315360000 Accept-Ranges: bytesbut when I look in Firebug, there’s no cache header and reloading the page, well, reloads the file. Can anyone explain? are FLV files not cacheable by browsers as they are considered streams? Thanks