+ * Primary entry points:
+ *
+ * - ObjectCache::newAccelerator( $fallbackType )
+ * Purpose: Cache.
+ * Stored only on the individual web server.
+ * Not associated with other servers.
+ *
+ * - wfGetMainCache()
+ * Purpose: Cache.
+ * Stored centrally within the local data-center.
+ * Not replicated to other DCs.
+ * Also known as $wgMemc. Configured by $wgMainCacheType.
+ *
+ * - ObjectCache::getMainWANInstance()
+ * Purpose: Cache.
+ * Stored in the local data-center's main cache (uses different cache keys).
+ * Delete events are broadcasted to other DCs. See WANObjectCache for details.
+ *
+ * - ObjectCache::getMainStashInstance()
+ * Purpose: Ephemeral storage.
+ * Stored centrally within the local data-center.
+ * Changes are replicated to other DCs (eventually consistent).
+ * To retrieve the latest value (e.g. not from a slave), use BagOStuff:READ_LATEST.
+ * This store may be subject to LRU style evictions.
+ *
+ * - wfGetCache( $cacheType )
+ * Get a specific cache type by key in $wgObjectCaches.
+ *