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AWS-SAA-C02-Study-Guide
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@ -1029,7 +1029,7 @@ The ElastiCache service makes it easy to deploy, operate, and scale an in-memory
### ElastiCache Key Details:
- The service is great for improving the performance of web applications by allowing you to receive information locally instead of relying solely on relatively distant DBs.
- Amazon ElastiCache offers fully managed Redis and Memcached for the most demanding applications that require sub-millisecond response times.
- For data that does not change often and frequently requested, it makes sense to cache such data rather than querying it from the database each time.
- For data that doesn’t change frequently and is often asked for, it makes a lot of sense to cache said data rather than querying it from the database.
- Common configurations that improve DB performance include introducing read replicas of a DB primary and inserting a caching layer into the storage architecture.
- MemcacheD is for simple caching purposes with horizontal scaling and multi-threaded performance, but if you require more complexity for your caching environment then choose Redis.
- A further comparison between MemcacheD and Redis for ElastiCache: