Share native Lettuce Cluster connection across LettuceClusterConnection [DATAREDIS-731]

[spring-projects-issues]

Ángel Luis López Monterroso opened DATAREDIS-731 and commented

Hello!
Into Stackoverflow: https://stackoverflow.com/questions/47300198/possible-performance-issue-with-cluster-spring-data-redis-lettuce
I left a message explaining a possible performance issue, this have 3 purposes.

• Detect a possible performance issue
• Know if we are using springdata redis+lettuce using good practices
• Know if using jedis driver will not have this performance impact in case of exists

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Affects: 1.8.3 (Ingalls SR3)

Reference URL: https://stackoverflow.com/questions/47300198/possible-performance-issue-with-cluster-spring-data-redis-lettuce

Referenced from: pull request #297

[spring-projects-issues]

Mark Paluch commented

I'm not sure I follow. What is your actual question?

[spring-projects-issues]

Ángel Luis López Monterroso commented

Is a real performance issue, or it's a bad usage of spring data redis + lettuce?

[spring-projects-issues]

Mark Paluch commented

So your actual concern is

Its mandatory open a new connection for every operation?

Spring Data Redis does not use a shared cluster connection but opens a new connection (in the last consequence) each time you call a command via RedisTemplate. That's quite inefficient and I think we should be able to improve here. We already share a single JedisCluster across multiple JedisClusterConnection instances and we could apply the same pattern for Lettuce to prevent connect and disconnects each time a command is executed

[spring-projects-issues]

Ángel Luis López Monterroso commented

Ok, thanks!!
Need I to open you a improvement issue?
MEanwhile we are going to test the jedis driver.
Regards

[spring-projects-issues]

Mark Paluch commented

Let's take this ticket to introduce a shared connection for Redis Cluster using Lettuce