Monitoring ElastiCache performance metrics with Redis or Memcached

Amazon ElastiCache is a fully managed in-memory cache service offered by AWS that helps improve the performance of applications by retrieving data from memory instead of accessing it from slower disk storage. The key performance metrics for monitoring ElastiCache fall into four general categories: client, cache performance, memory, and host-level metrics. Monitoring these metrics can help identify latency issues, ensure efficient use of cache resources, and maintain optimal application performance. By understanding and tracking these metrics, users can make informed decisions about scaling up or down their cache clusters as needed.