public class AppengineMemCacheMap implements IQuoteCache {
	private Cache cache;

	public AppengineMemCacheMap() {
		Map props = new HashMap();
		props.put(GCacheFactory.EXPIRATION_DELTA, 60);// seconds

		try {
			CacheFactory cacheFactory = CacheManager.getInstance()
					.getCacheFactory();
			cache = cacheFactory.createCache(props);

	}

	@Override
	public void updateQuote(ICodeQuote stock) {
		cache.put(stock.getCodigo(), stock);
	}

   ...
}