Mercurial > hg > nginx
diff src/http/modules/ngx_http_fastcgi_module.c @ 5441:43ccaf8e8728
Upstream: cache revalidation with conditional requests.
The following new directives are introduced: proxy_cache_revalidate,
fastcgi_cache_revalidate, scgi_cache_revalidate, uwsgi_cache_revalidate.
Default is off. When set to on, they enable cache revalidation using
conditional requests with If-Modified-Since for expired cache items.
As of now, no attempts are made to merge headers given in a 304 response
during cache revalidation with headers previously stored in a cache item.
Headers in a 304 response are only used to calculate new validity time
of a cache item.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 18 Nov 2013 20:48:22 +0400 |
parents | 8c827bb1b2b6 |
children | e68af4e3396f |
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--- a/src/http/modules/ngx_http_fastcgi_module.c +++ b/src/http/modules/ngx_http_fastcgi_module.c @@ -405,6 +405,13 @@ static ngx_command_t ngx_http_fastcgi_c offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_lock_timeout), NULL }, + { ngx_string("fastcgi_cache_revalidate"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, + ngx_conf_set_flag_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_revalidate), + NULL }, + #endif { ngx_string("fastcgi_temp_path"), @@ -563,7 +570,8 @@ static ngx_str_t ngx_http_fastcgi_hide_ #if (NGX_HTTP_CACHE) static ngx_keyval_t ngx_http_fastcgi_cache_headers[] = { - { ngx_string("HTTP_IF_MODIFIED_SINCE"), ngx_string("") }, + { ngx_string("HTTP_IF_MODIFIED_SINCE"), + ngx_string("$upstream_cache_last_modified") }, { ngx_string("HTTP_IF_UNMODIFIED_SINCE"), ngx_string("") }, { ngx_string("HTTP_IF_NONE_MATCH"), ngx_string("") }, { ngx_string("HTTP_IF_MATCH"), ngx_string("") }, @@ -2336,6 +2344,7 @@ ngx_http_fastcgi_create_loc_conf(ngx_con conf->upstream.cache_valid = NGX_CONF_UNSET_PTR; conf->upstream.cache_lock = NGX_CONF_UNSET; conf->upstream.cache_lock_timeout = NGX_CONF_UNSET_MSEC; + conf->upstream.cache_revalidate = NGX_CONF_UNSET; #endif conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; @@ -2582,6 +2591,9 @@ ngx_http_fastcgi_merge_loc_conf(ngx_conf ngx_conf_merge_msec_value(conf->upstream.cache_lock_timeout, prev->upstream.cache_lock_timeout, 5000); + ngx_conf_merge_value(conf->upstream.cache_revalidate, + prev->upstream.cache_revalidate, 0); + #endif ngx_conf_merge_value(conf->upstream.pass_request_headers,