Proper Jedis configuration for working with AWS Elasticache

[Shane Witbeck]

I've been struggling to figure out how to configure Jedis for use in an AWS Elasticache non-clustered (master/slave) environment.

At first, I just configured JedisPool with something like 

JedisPool jedisPool = new JedisPool("primary_node_host", 6379);

then did some operations like:

try (Jedis jedis = jedisPool.getResource()) {
 // ops here 
} catch (JedisException e) {
 // handle exception here 
}

But later realized that the replica nodes (I have 3) should be used for reads while the primary should be used for writes.

How should I be instantiating Jedis to work with this setup?

Second, do I need to specifically select a random replica node in order to do read ops or will the client handle this for me depending on what kind of operation I'm doing?

I'm somewhat new to Redis so any hints here are much appreciated.

[Shane Witbeck]

Replying to my own post. I wrote an abstraction on top of Jedis that interrogates the AWS Elasticache API to get the master/slave endpoints. Then I configured two JedisPools, one for master (writes) and one for slaves (reads).

[S Ahmed]

aws has their own java library, it is a fork of the spymemcached lib.

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[Marcos Lilljedahl]

This is Redis, not memchaced

sent from mobile

[S Ahmed]

oops sorry about that.

[Allan Wax]

What happens when a master fails, or a slave fails, or a slave becomes a master?  Do you have to recreate the pools?

[abhi]

Has there been any update in the jedis library to handle this scenario since the last post? Configuration for connecting to one master (for writes) and multiple slaves(for reads)?

[Sazzadul]

@abhi, If you mean any update apart from writing an abstraction on top of Jedis, then NO update.

[Paul Leddy]

Care to share the code? I have the same issue to solve this week.