initialize of.uniq in ngx_open_cached_file()
diff --git a/src/core/ngx_open_file_cache.c b/src/core/ngx_open_file_cache.c
index d9ec188..4e4c1c5 100644
--- a/src/core/ngx_open_file_cache.c
+++ b/src/core/ngx_open_file_cache.c
@@ -189,7 +189,9 @@
         }
 
         if ((file->event && file->use_event)
-            || (file->event == NULL && now - file->created < of->valid))
+            || (file->event == NULL
+                && (of->uniq == 0 || of->uniq == file->uniq)
+                && now - file->created < of->valid))
         {
             if (file->err == 0) {