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diff src/http/ngx_http_cache.h @ 5880:78c49e243848

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Cache: multiple variants of a resource now can be stored. If a variant stored can't be used to respond to a request, the variant hash is used as a secondary key. Additionally, if we previously switched to a secondary key, while storing a response to cache we check if the variant hash still apply. If not, we switch back to the original key, to handle cases when Vary changes.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 27 Oct 2014 21:14:10 +0300
parents c525c0454aa5
children 2f7e557eab5b
line wrap: on
line diff
--- a/src/http/ngx_http_cache.h
+++ b/src/http/ngx_http_cache.h
@@ -65,6 +65,7 @@ struct ngx_http_cache_s {
     ngx_array_t                      keys;
     uint32_t                         crc32;
     u_char                           key[NGX_HTTP_CACHE_KEY_LEN];
+    u_char                           main[NGX_HTTP_CACHE_KEY_LEN];
 
     ngx_file_uniq_t                  uniq;
     time_t                           valid_sec;
@@ -102,6 +103,7 @@ struct ngx_http_cache_s {
     unsigned                         exists:1;
     unsigned                         temp_file:1;
     unsigned                         reading:1;
+    unsigned                         secondary:1;
 };