private String cacheName;
private int index;
private void addToCache(final String cacheName, final int index, Object value) {
final CacheItemRequest request = CacheItemRequest.create().key(TEST_CACHE_PREFIX_KEY + index).value(value)
.expireAfter(EXPIRATION_IN_SECONDS).onlyIfNotExists();
cacheProvider.putItem(cacheName, request);
}