In part one of this series, we looked at Jedis as the Java-based Redis driver when used in combination with ElastiCache for Redis in clustered mode. We learned that during a failover, Jedis takes some time to figure out what the new primary is before it can restore the connection to the ElastiCache cluster. In this post, I’ll share some of the lessons learned from switching to Lettuce as the driver for our Java-based application.

A Different Driver

Lettuce, a Java-based driver for Redis, is the default driver for Redis when working with Spring Framework. Lettuce is a fully non-blocking Redis client built with Netty providing Reactive, Asynchronous, and Synchronous Data Access.