objectcache: remove unused constant and expand on a comment

[lhc/web/wiklou.git] / includes / libs / objectcache / WANObjectCache.php

diff --git a/includes/libs/objectcache/WANObjectCache.php b/includes/libs/objectcache/WANObjectCache.php
index d939819..eec766b 100644 (file)
--- a/includes/libs/objectcache/WANObjectCache.php
+++ b/includes/libs/objectcache/WANObjectCache.php
@@ -134,8 +134,6 @@ class WANObjectCache implements IExpiringStore, LoggerAwareInterface {
        const LOCK_TTL = 10;
        /** Default remaining TTL at which to consider pre-emptive regeneration */
        const LOW_TTL = 30;
-       /** Default time-since-expiry on a miss that makes a key "hot" */
-       const LOCK_TSE = 1;
 
        /** Never consider performing "popularity" refreshes until a key reaches this age */
        const AGE_NEW = 60;
@@ -284,7 +282,8 @@ class WANObjectCache implements IExpiringStore, LoggerAwareInterface {
         * (e.g. the default REPEATABLE-READ in innoDB). Even for mutable data, that
         * isolation can largely be maintained by doing the following:
         *   - a) Calling delete() on entity change *and* creation, before DB commit
-        *   - b) Keeping transaction duration shorter than delete() hold-off TTL
+        *   - b) Keeping transaction duration shorter than the delete() hold-off TTL
+        *   - c) Disabling interim key caching via useInterimHoldOffCaching() before get() calls
         *
         * However, pre-snapshot values might still be seen if an update was made
         * in a remote datacenter but the purge from delete() didn't relay yet.