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Cleaning up old Google Appenggine sessions

/ Published in: Java
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  1. private void clearSessions() { 
  2.                 DatastoreService datastore = 
  3. DatastoreServiceFactory.getDatastoreService(); 
  4.                 Query query = new Query("_ah_SESSION"); 
  5.                 PreparedQuery results = datastore.prepare(query); 
  6.  
  7.                 log.info("Deleting " + results.countEntities() + " sessions from 
  8. data store"); 
  9.  
  10.                 for (Entity session : results.asIterable()) { 
  11.                         datastore.delete(session.getKey()); 
  12.                 } 
  13.         } 
  14.  
  15. // clearing everything in the cache, because sessions are also kept in 
  16. memcache 
  17.  
  18.         private void clearCache() throws CacheException { 
  19.                 CacheFactory cacheFactory = CacheManager.getInstance 
  20. ().getCacheFactory(); 
  21.                 Cache cache = cacheFactory.createCache(Collections.emptyMap()); 
  22.  
  23.                 CacheStatistics stats = cache.getCacheStatistics(); 
  24.                 log.info("Clearing " + stats.getObjectCount() + " objects in 
  25. cache"); 
  26.  
  27.                 cache.clear(); 
  28.         }

URL: http://groups.google.com/group/google-appengine-java/browse_thread/thread/280c3fb95dac2314

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