Elasticache Redis 6 multi-threading enabled?
My organization is using the Redis Cluster implementation of ElastiCache 5.0.6. Redis 6 boasts multi-threading which can improve performance , but it is disabled by default. If we upgrade to ElastiCache with Redis 6.x, will it have multi-thread enabled? How many threads? Is there a way to configure multi-threading capabilities at time of migration?
ElastiCache Redis 5.0.3 and higher for newer generations with 4 or more vCPUs, we do dynamic network processing to enhance I/O handling and it utilizes extra CPU core. This greatly improve the throughput/latency and work best for applications that require a larger number of concurrent connections. And it is worth mentioning that no client side changes are needed to get these benefits. More details can be found on this blog. Also, ElastiCache for Redis 6.2 has done performance improvement for TLS-enabled clusters to offload encryption and connection handling outside the main Redis thread and some explanations are provided on this page. Redis is still a single threaded by design, but these enhancement we have made improve performance.
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