Local Cache

gistfile1.java

// Simple cache

private ConcurrentHashMap<String, String> cache;

String resource = cache.get(url.toString());

...


// Guava

private Cache<String, Boolean> cache;


this.cache = CacheBuilder.newBuilder()
			 .maximumSize(100)
			 .concurrencyLevel(50)
			 .expireAfterWrite(expireTimeInSeconds, TimeUnit.SECONDS)
			 .build();

cache.getIfPresent(rsc) 
cache.put(rsc, true);