open_file_cache

Configures a cache that can store:

• open file descriptors, their sizes and modification times;
• information on existence of directories;
• file lookup errors, such as “file not found”, “no read permission”, and so on.

  Caching of errors should be enabled separately by the open_file_cache_errors directive.

The directive has the following parameters:

max

sets the maximum number of elements in the cache; on cache overflow the least recently used (LRU) elements are removed;

inactive

defines a time after which an element is removed from the cache if it has not been accessed during this time; by default, it is 60 seconds;

off

disables the cache.

Example:

open_file_cache          max=1000 inactive=20s;
open_file_cache_valid    30s;
open_file_cache_min_uses 2;
open_file_cache_errors   on;