CacheConfiguration.java

import com.github.benmanes.caffeine.cache.Caffeine;
import org.springframework.cache.caffeine.CaffeineCache;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import static java.time.Duration.ofHours;
import static java.time.Duration.ofMinutes;

@Configuration
public class CacheConfiguration {

    @Bean
    public CaffeineCache firstCaffeineCache() {
        return new CaffeineCache("firstCache",
                  Caffeine.newBuilder()
                        .weakKeys()
                        .initialCapacity(100)
                        .maximumSize(512)
                        .expireAfterWrite(ofHours(12))
                        .build());
    }

    @Bean
    public CaffeineCache secondCaffeineCache() {
        return new CaffeineCache("secondCache",
                 Caffeine.newBuilder()
                        .maximumSize(128)
                        .expireAfterAccess(ofMinutes(30))
                        .build());
    }

}