Back to AWS
AWSDatabase
ElastiCache
Amazon ElastiCache is a managed in-memory caching service for Redis and Memcached workloads.
What it does
Managed Redis and Memcached.
When to use
Use ElastiCache when you need low-latency caching, session storage, or fast transient data access.
Key Concepts
In-memory storage is much faster than disk-backed databases.
Redis is commonly used for caching and sessions.
Managed service reduces operational overhead.
Often used to reduce database load.
Common Use Cases
Caching database query results.
Storing sessions and temporary state.
Reducing latency for frequently requested data.
Interview Questions
What is ElastiCache?
Why use Redis in front of a database?
When would caching improve system performance?