Posted By

putrakopo on 04/03/10

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Last Edited at 04/03/10 07:34am

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Cleaning up old Google Appenggine sessions

/ Published in: Java

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private void clearSessions() { 
                DatastoreService datastore = 
DatastoreServiceFactory.getDatastoreService(); 
                Query query = new Query("_ah_SESSION"); 
                PreparedQuery results = datastore.prepare(query);

log.info("Deleting " + results.countEntities() + " sessions from 
data store");

for (Entity session : results.asIterable()) { 
                        datastore.delete(session.getKey()); 
                } 
        }

// clearing everything in the cache, because sessions are also kept in 
memcache

private void clearCache() throws CacheException { 
                CacheFactory cacheFactory = CacheManager.getInstance 
().getCacheFactory(); 
                Cache cache = cacheFactory.createCache(Collections.emptyMap());

CacheStatistics stats = cache.getCacheStatistics(); 
                log.info("Clearing " + stats.getObjectCount() + " objects in 
cache");

cache.clear(); 
        }

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

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