I think ( it's hard to read ) that you're not telling the site which
http cache to use ( fastcgi_cache microcache; ).

On my systems ( I'm looking at an Amazon one so RH
based ), /var/cache/nginx is already in use. I set
up /var/cache/nginx_fastcgi instead, which is not empty.

(1GB is way too big btw).

I created a file /etc/nginx/microcache, containing

--8<--
# Setup var defaults
set $no_cache "";
# If non GET/HEAD, don't cache & mark user as uncacheable for 1 second
via cookie
if ($request_method !~ ^(GET|HEAD)$) {
set $no_cache "1";
}
# Drop no cache cookie if need be
# (for some reason, add_header fails if included in prior if-block)
if ($no_cache = "1") {
add_header Set-Cookie "_mcnc=1; Max-Age=2; Path=/";
add_header X-Microcachable "0";
}
# Bypass cache if no-cache cookie is set
if ($http_cookie ~* "_mcnc") {
set $no_cache "1";
}

# Bypass cache if flag is set
fastcgi_no_cache $no_cache;
fastcgi_cache_bypass $no_cache;
fastcgi_cache microcache;
fastcgi_cache_key "$scheme$request_method$host$request_uri
$http_if_modified_since$http_if_none_match";
fastcgi_cache_valid 404 30m;
fastcgi_cache_valid 200 10s;
fastcgi_max_temp_file_size 1M;
fastcgi_cache_use_stale updating;
fastcgi_pass_header Set-Cookie;
fastcgi_pass_header Cookie;
fastcgi_ignore_headers Cache-Control Expires Set-Cookie;
--8<--
(this only stores for 10 seconds BTW, and the cache key is designed for
a magento site).

And included it in the location blocks that would use it, ie

location ~* \.php$

This way the config becomes much more readable.

hth,

Steve

On Thu, 2014-01-16 at 20:19 +0100, Lorenzo Raffio wrote:
> No one? :)
>
>
>
> 2014/1/13 Lorenzo Raffio <multiformeingegno@gmail.com>
> I wanted to try fastcgi_cache on my nginx 1.5.8 as shown here
> http://seravo.fi/2013/optimizing-web-server-performance-with-nginx-and-php
>
>
> In nginx conf, http section, I added:
>
> fastcgi_cache_path /var/cache/nginx levels=1:2
> keys_zone=microcache:10m max_size=1000m inactive=60m;
>
>
> In server section:
> set $cache_uri $request_uri;
>
> # POST requests and urls with a query string should always
> go to PHP
> if ($request_method = POST) {
> set $cache_uri 'null cache';
> }
> if ($query_string != "") {
> set $cache_uri 'null cache';
> }
>
> # Don't cache uris containing the following segments
> if ($request_uri ~* "(/wp-admin/|/xmlrpc.php|/wp-(app|
> cron|login|register|mail).php|wp-.*.php|/feed/|index.php|
> wp-comments-popup.php|wp-links-opml.php|wp-locations.php|
> sitemap(_index)?.xml|[a-z0-9_-]+-sitemap([0-9]+)?.xml)") {
> set $cache_uri 'null cache';
> }
>
> # Don't use the cache for logged in users or recent
> commenters
> if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|
> wp-postpass|wordpress_logged_in") {
> set $cache_uri 'null cache';
> }
>
> location ~ \.php$ {
> try_files $uri =404;
> fastcgi_split_path_info ^(.+\.php)(/.+)$;
> include fastcgi.conf;
> fastcgi_pass unix:/var/run/php5-fpm.sock;
>
>
> ##
> # Fastcgi cache
> ##
> set $skip_cache 1;
> if ($cache_uri != "null cache") {
> add_header X-Cache-Debug "$cache_uri
> $cookie_nocache $arg_nocache$arg_comment $http_pragma
> $http_authorization";
> set $skip_cache 0;
> }
> fastcgi_cache_bypass $skip_cache;
> fastcgi_cache_key $scheme$host$request_uri
> $request_method;
> fastcgi_cache_valid any 8m;
> fastcgi_cache_bypass $http_pragma;
> fastcgi_cache_use_stale updating error timeout
> invalid_header http_500;
>
> }
>
> I chowned /var/cache/nginx to www-data user (and group) and
> chmodded it to 775.
>
> I restarted nginx but the folder is always empty. Is it
> normal? How can I test if fastcgi_cache is working?
>
> Thanks in advance
>
>
>
> _______________________________________________
> nginx mailing list
> nginx@nginx.org
> http://mailman.nginx.org/mailman/listinfo/nginx

--
Steve Holdoway BSc(Hons) MIITP
http://www.greengecko.co.nz
Linkedin: http://www.linkedin.com/in/steveholdoway
Skype: sholdowa

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