nginx 0.8.46 *) Change: now the "proxy_no_cache", "fastcgi_no_cache", "uwsgi_no_cache", and "scgi_no_cache" directives affect on a cached response saving only. *) Feature: the "proxy_cache_bypass", "fastcgi_cache_bypass", "uwsgi_cache_bypass", and "scgi_cache_bypass" directives. *) Bugfix: nginx did not free memory in cache keys zones if there was an error during working with backend: the memory was freed only after inactivity time or on memory low condition.

--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -163,7 +163,8 @@ typedef struct {
     ngx_uint_t                       cache_methods;
 
     ngx_array_t                     *cache_valid;
-    ngx_array_t                     *no_cache; /* ngx_http_complex_value_t */
+    ngx_array_t                     *cache_bypass;
+    ngx_array_t                     *no_cache;
 #endif
 
     ngx_array_t                     *store_lengths;