I want the data stored in redis cache to be cleared from the cache automatically after a given period, without calling the delete method on it. In this POC, I am setting the TTL as 60 seconds. I have tried setting it in Cache manager using the API setDefaultExpiration, setExpires and in the RedisTemplate using the API expire. None of the solutions have worked for me so far.
@Configuration
public class RedisServerConfig extends CachingConfigurerSupport {
@Bean
public RedisTemplate<String, String> redisTemplate() {
RedisTemplate<String, String> redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(connectionFactory());
redisTemplate.setKeySerializer(new StringRedisSerializer());
return redisTemplate;
}
@Bean
public CacheManager cacheManager(RedisTemplate<String, String> redisTemplate) {
RedisCacheManager redisCacheManager = new RedisCacheManager(redisTemplate);
redisCacheManager.setUsePrefix(true);
redisCacheManager.setCacheNames(cacheNames);
redisCacheManager.setTransactionAware(true);
redisCacheManager.setLoadRemoteCachesOnStartup(true);
// Using setDefaultExpiration
//redisCacheManager.setDefaultExpiration(60);
// Using setExpires
//Map<String, Long> expires = new HashMap<>();
//cacheNames.stream().forEach(name->expires.put(name, 60L));
//redisCacheManager.setExpires(expires);
return redisCacheManager;
}
@Bean
public RedisConnectionFactory connectionFactory() {
JedisPoolConfig poolConfig = new JedisPoolConfig();
poolConfig.setMaxTotal(maxTotal);
poolConfig.setMaxIdle(maxIdle);
poolConfig.setMinIdle(minIdle);
poolConfig.setTestOnBorrow(true);
poolConfig.setTestOnReturn(true);
poolConfig.setTestWhileIdle(true);
poolConfig.setMaxWaitMillis(secondsToWait);
JedisConnectionFactory factory = new JedisConnectionFactory(sentinelConfig(), poolConfig);
factory.setUsePool(true);
factory.setPassword(redisPassword);
factory.setPort(redisPort);
return factory;
}
}
In the redis repository used,
@Repository
public class RedisRepository {
private static final Logger logger = LoggerFactory.getLogger(RedisRepositoryImpl.class);
@Autowired
private RedisTemplate<String, String> redisTemplate;
public void saveSharedSecret(String customerNumber, String sharedSecret) {
redisTemplate.opsForHash().put(MfaConstants.REDIS_SHAREDSECRET_REGION, myKey, myValue);
redisTemplate.expire(myKey, 1, TimeUnit.MINUTES);
// The timeOut obtained here is zero
logger.info("myKey: [{}], timeOut: [{}]", myKey, redisTemplate.getExpire(myKey, TimeUnit.SECONDS));
}
}
Kindly point me in the right direction. Any help is appreciated.
In your code:
redisTemplate.opsForHash().put(MfaConstants.REDIS_SHAREDSECRET_REGION, myKey, myValue);
redisTemplate.expire(myKey, 1, TimeUnit.MINUTES);
So basically you want to expire a key inside a hash. But unfortunately, it's cannot be done using standard redis command.