What is ElastiCache?

Managed in-memory cache service - like RAM for your database queries.

Simple analogy:

• Database = Library (slow to find books)
• Cache = Your desk (books you use often, super fast access)

What is a Cache?

A temporary storage for frequently accessed data stored in RAM (memory) instead of disk.

Why it's fast:

• RAM is 1000x faster than disk
• Data retrieved in milliseconds instead of seconds

ElastiCache Comparison to RDS:

Think of it:

• RDS = Your filing cabinet (permanent, organized)
• ElastiCache = Your desk (temporary, super fast)

Key Features:

1. In-Memory Database