LoadingCache<String, Integer> cache = Caffeine.newBuilder() .maximumSize(100) .build(key -> expensiveDatabaseOperation(key)); public Integer expensiveDatabaseOperation(String key) { return data; } Integer value = cache.get("key"); LoadingCache<String, Integer> cache = Caffeine.newBuilder() .expireAfterWrite(10, TimeUnit.MINUTES) .build(key -> expensiveDatabaseOperation(key)); cache.put("key", value); LoadingCache<String, Integer> cache = Caffeine.newBuilder() .refreshAfterWrite(1, TimeUnit.MINUTES) .build(key -> expensiveDatabaseOperation(key)); Integer value = cache.get("key"); LoadingCache<String, Integer> cache = Caffeine.newBuilder() .maximumSize(100) .build(key -> expensiveDatabaseOperation(key)); cache.put("key", value);