Redis Elasticache 亚毫秒响应时间？

Question

AWS Redis Elasticache is advertised as being sub-millisecond. But in any meaningful use case there will be a.network latency calling the elasticache service, so at best in the 10s of milliseconds…is this correct? Redis Elasticache always has to be called over the.network, not running on the same server as the application server correct?

Answer 1

Thats correct. Elasticache provides sub millisecond response times, but you will always have.network delays. If your application is hosted on EC2 in the same region then latency will be sub millisecond at the application end. However, the further away you place your application from the elasticache cluster the greater latency you will receive, you cannot defy the laws of physics.

Here is a good guide to reducing latencies for Elasticache for Redis:

https://aws.amazon.com/premiumsupport/knowledge-center/elasticache-redis-correct-high-latency/