Cache<Long, String> cache = Cache2kBuilder.of(Long.class, String.class) .expireAfterWrite(Duration.ofMinutes(10)) .maximumSize(100) .build(); cache.put(1L, "Hello"); String value = cache.get(1L); Cache<Long, String> cache = Cache2kBuilder.of(Long.class, String.class) .expireAfterWrite(Duration.ofMinutes(10)) .maximumSize(100) .addListener((cache, entry) -> { System.out.println("Item expired: " + entry.getKey()); }) .build(); Cache<Long, String> cache = Cache2kBuilder.of(Long.class, String.class) .expireAfterWrite(Duration.ofMinutes(10)) .maximumSize(100) .build(); cache.put(1L, "Hello"); String value = cache.get(1L); cache.remove(1L); CacheLoader<Long, String> loader = (key) -> { return loadDataFromDatabase(key); }; Cache<Long, String> cache = Cache2kBuilder.of(Long.class, String.class) .expireAfterWrite(Duration.ofMinutes(10)) .maximumSize(100) .loader(loader) .build(); String value = cache.get(1L);