CODEWITHSUNDEEP
redisjedis
Rohan Bhatte
Rohan Bhatte

Reputation: 95

Redis on Java Connection Pool

I am new to Redis and currently using Java 8, Java EE 7 and AWS Elastic Cache on Redis. Using my java knowledge, all resources should be closed/returned to the pool once the task is over. 

pool= new JedisPool(new JedisPoolConfig(),"myendpoint.aws.com",6379,Protocol.DEFAULT_TIMEOUT);
try(Jedis jedis=pool.getResource();)
{
    ListTask gt=new ListTask();
    JsonArray listofTask=gt.getTutorials();
    Map<String,String> attributes = new HashMap<>();
    attributes.put("ListofTask",listofTask.toString());
    jedis.hmset(key, attributes);
}
catch (Exception ex) {
    Logger.getLogger(RedisOperation.class.getName()).log(Level.SEVERE,"setRedisListofTaskJSON", ex);
}
pool.close();

On clicking info, i get Connected clients as 149. This is just one box testing the application multiple times. And each time the connected_clients are increasing and memory is increasing.

Clients connected_clients:149 client_longest_output_list:0 client_biggest_input_buf:0 blocked_clients:0

Question : 1 How to close/house keep connections? 2 How to set an age/ttl on key?

Using JDK8, Java EE7 and Redis 2.8(using Jedis to connect).

Upvotes: 0

Views: 8327

Answers (2)

Arkhangelskiy Evgeniy
Arkhangelskiy Evgeniy

Reputation: 622

Answer for your question 2 is using expire or expireat and ttl methods from Jedis class

Upvotes: 0

Rohan Bhatte
Rohan Bhatte

Reputation: 95

Since I used try-resources, there is no need to close jedis pool resource. At the end of the application, destory the pool by calling destroy method.

try(Jedis jedis=pool.getResource();)
{    
    jedis.hmset(key, attributes);
}catch (Exception ex) {

}
pool.destroy();

Original documentation https://github.com/xetorthio/jedis/wiki/Getting-started.

Upvotes: 1

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