Define multiple caches configurations with Spring and Caffeine

You can declare many cache configurations programmatically instead of using yaml.

Something like this:

@Configuration@EnableCachingpublic class CacheConfig {    public static final String CACHE_A = "cacheA";    public static final String CACHE_B = "cacheB";    public static final String CACHE_C = "cacheC";    @Bean    public CacheManager cacheManagerTicker(Ticker ticker) {              List<Cache> caches = new ArrayList<>();              // Cache A       caches.add(this.buildCache(CACHE_A, ticker, 2000L, 1L, TimeUnit.HOURS));              // Cache B       caches.add(this.buildCache(CACHE_B, ticker, 2000L, 1L, TimeUnit.HOURS));              // Cache C       caches.add(this.buildCache(CACHE_C, ticker, 3500L, 15L, TimeUnit.MINUTES));              SimpleCacheManager cacheManager = new SimpleCacheManager();       cacheManager.setCaches(caches);       return cacheManager;    }        private CaffeineCache buildCache(String cacheName, Ticker ticker, Long maxSize, Long ttl, TimeUnit ttlUnit){            Caffeine<Object, Object> cacheBuilder = Caffeine.newBuilder();        // TTL        if (ttl != null && ttl > 0 && ttlUnit != null){            cacheBuilder.expireAfterWrite(ttl, ttlUnit);        }                // Max size        if (maxSize != null && maxSize > 0){            cacheBuilder.maximumSize(maxSize);        }                // Ticker        cacheBuilder.ticker(ticker);                return new CaffeineCache(cacheName, cacheBuilder.build());    }        @Bean    public Ticker ticker() {        return Ticker.systemTicker();    }    }