> For the complete documentation index, see [llms.txt](https://karansingh.gitbook.io/aws-saa-c02/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://karansingh.gitbook.io/aws-saa-c02/rds/elasticache.md).
# ElastiCache
* ElastiCache provides a **high-performance, scalable, and cost-effective caching solution**.
* At the same time, it **helps remove the complexity associated with deploying and managing a distributed cache environment**.
* Build data-intensive apps or boost the performance of your existing databases by **retrieving data from high throughput** and **low latency in-memory data stores**.
* Amazon ElastiCache is a popular choice for **real-time use cases like Caching, Session Stores, Gaming, Geospatial Services, Real-Time Analytics, and Queuing**.
* **Does not support IAM authentication**.
* Choose **Memcached** (just a pure cache, no backups and restores, no data persistence)
* Choose **Redis** (backups, restores, Multi-AZ, data persistence, failovers, read replicas)
