A blacklisting service. Uses standard springboot annotations.

BlackListingService.java

@Service
public class BlackListingService {

    @CachePut(CacheConfig.BLACKLIST_CACHE_NAME)
    public String blackListJwt(String jwt) {
        return jwt;
    }

    @Cacheable(value = CacheConfig.BLACKLIST_CACHE_NAME, unless = "#result == null")
    public String getJwtBlackList(String jwt) {
        return null;
    }

}

Related to medium article: https://blog.devgenius.io/fixing-jwt-insecure-session-termination-by-blacklisting-tokens-36d783adfd67