Better explain WANObjectCache::TTL_NONE constant

Change-Id: I2ce363c957f35e75a17f05b2160979a6fa4aa642

diff --git a/includes/libs/objectcache/WANObjectCache.php b/includes/libs/objectcache/WANObjectCache.php
index 6c69b14..c9a3f30 100644 (file)
--- a/includes/libs/objectcache/WANObjectCache.php
+++ b/includes/libs/objectcache/WANObjectCache.php
@@ -86,7 +86,7 @@ class WANObjectCache {
        /** Default time-since-expiry on a miss that makes a key "hot" */
        const LOCK_TSE = 1;
 
-       /** Idiom for set()/getWithSetCallback() TTL */
+       /** Idiom for set()/getWithSetCallback() TTL being "forever" */
        const TTL_NONE = 0;
        /** Idiom for getWithSetCallback() callbacks to avoid calling set() */
        const TTL_UNCACHEABLE = -1;