*
* Primary entry points:
*
- * - ObjectCache::newAccelerator( $fallbackType )
- * Purpose: Cache for very hot keys.
- * Stored only on the individual web server.
- * Not associated with other servers.
- *
* - ObjectCache::getMainWANInstance()
- * Purpose: Cache.
+ * Purpose: Memory 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 primary data-center.
- * Changes are applied there first and replicated to other DCs (best-effort).
- * To retrieve the latest value (e.g. not from a slave), use BagOStuff:READ_LATEST.
- * This store may be subject to LRU style evictions.
+ * - ObjectCache::getLocalServerInstance( $fallbackType )
+ * Purpose: Memory cache for very hot keys.
+ * Stored only on the individual web server (often EmptyBagOStuff in CLI mode).
+ * Not replicated to the other servers.
*
* - ObjectCache::getLocalClusterInstance()
* Purpose: Memory storage for per-cluster coordination and tracking.
* A typical use case would be a rate limit counter or cache regeneration mutex.
* Stored centrally within the local data-center. Not replicated to other DCs.
- * Also known as $wgMemc. Configured by $wgMainCacheType.
+ * Configured by $wgMainCacheType.
+ *
+ * - ObjectCache::getMainStashInstance()
+ * Purpose: Ephemeral global storage.
+ * Stored centrally within the primary data-center.
+ * Changes are applied there first and replicated to other DCs (best-effort).
+ * 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 )
+ * - ObjectCache::getInstance( $cacheType )
+ * Purpose: Special cases (like tiered memory/disk caches).
* Get a specific cache type by key in $wgObjectCaches.
*
* All the above cache instances (BagOStuff and WANObjectCache) have their makeKey()
* @return string
*/
public static function getDefaultKeyspace() {
- global $wgCachePrefix, $wgDBname, $wgDBprefix;
+ global $wgCachePrefix;
$keyspace = $wgCachePrefix;
if ( is_string( $keyspace ) && $keyspace !== '' ) {
return $keyspace;
}
- $keyspace = $wgDBname;
- if ( is_string( $wgDBprefix ) && $wgDBprefix !== '' ) {
- $keyspace .= '-' . $wgDBprefix;
- }
-
- return $keyspace;
+ return wfWikiID();
}
/**
if ( isset( $params['loggroup'] ) ) {
$params['logger'] = LoggerFactory::getInstance( $params['loggroup'] );
} else {
- // For backwards-compatability with custom parameters, lets not
- // have all logging suddenly disappear
$params['logger'] = LoggerFactory::getInstance( 'objectcache' );
}
if ( !isset( $params['keyspace'] ) ) {
* A fallback cache can be specified if none is found.
*
* // Direct calls
- * ObjectCache::newAccelerator( $fallbackType );
+ * ObjectCache::getLocalServerInstance( $fallbackType );
*
* // From $wgObjectCaches via newFromParams()
- * ObjectCache::newAccelerator( array( 'fallback' => $fallbackType ) );
+ * ObjectCache::getLocalServerInstance( array( 'fallback' => $fallbackType ) );
*
+ * @param int|string|array $fallback Fallback cache or parameter map with 'fallback'
+ * @return BagOStuff
+ * @throws MWException
+ * @since 1.27
+ */
+ public static function getLocalServerInstance( $fallback = CACHE_NONE ) {
+ if ( function_exists( 'apc_fetch' ) ) {
+ $id = 'apc';
+ } elseif ( function_exists( 'xcache_get' ) && wfIniGetBool( 'xcache.var_size' ) ) {
+ $id = 'xcache';
+ } elseif ( function_exists( 'wincache_ucache_get' ) ) {
+ $id = 'wincache';
+ } else {
+ if ( is_array( $fallback ) ) {
+ $id = isset( $fallback['fallback'] ) ? $fallback['fallback'] : CACHE_NONE;
+ } else {
+ $id = $fallback;
+ }
+ }
+
+ return self::getInstance( $id );
+ }
+
+ /**
* @param array $params [optional] Array key 'fallback' for $fallback.
* @param int|string $fallback Fallback cache, e.g. (CACHE_NONE, "hash") (since 1.24)
* @return BagOStuff
- * @throws MWException
+ * @deprecated 1.27
*/
public static function newAccelerator( $params = array(), $fallback = null ) {
if ( $fallback === null ) {
$fallback = $params;
}
}
- if ( function_exists( 'apc_fetch' ) ) {
- $id = 'apc';
- } elseif ( function_exists( 'xcache_get' ) && wfIniGetBool( 'xcache.var_size' ) ) {
- $id = 'xcache';
- } elseif ( function_exists( 'wincache_ucache_get' ) ) {
- $id = 'wincache';
- } else {
- if ( $fallback === null ) {
- throw new MWException( 'CACHE_ACCEL requested but no suitable object ' .
- 'cache is present. You may want to install APC.' );
- }
- $id = $fallback;
- }
- return self::newFromId( $id );
+
+ return self::getLocalServerInstance( $fallback );
}
/**
$class = $params['relayerConfig']['class'];
$params['relayer'] = new $class( $params['relayerConfig'] );
$params['cache'] = self::newFromId( $params['cacheId'] );
+ if ( isset( $params['loggroup'] ) ) {
+ $params['logger'] = LoggerFactory::getInstance( $params['loggroup'] );
+ } else {
+ $params['logger'] = LoggerFactory::getInstance( 'objectcache' );
+ }
$class = $params['class'];
return new $class( $params );