ElastiCache - Redis & Memcached

Learn about Amazon ElastiCache with Redis and Memcached - in-memory caching for improved application performance.

elasticache-config.json
{
"Engine": "redis",
"NodeType": "cache.t3.micro"
}
elasticache-config.json
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Tutor:Amazon ElastiCache is a fully managed in-memory caching service. It improves application performance by storing frequently accessed data in memory, reducing database load and latency. ElastiCache supports two popular caching engines: Redis and Memcached.


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Concept 1: ElastiCache Basics

Amazon ElastiCache is a fully managed in-memory caching service. It improves application performance by storing frequently accessed data in memory, reducing database load and latency. ElastiCache supports two popular caching engines: Redis and Memcached.

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ElastiCache (Redis & Memcached)

Author

Pascual Vila

Cloud Instructor.

Amazon ElastiCache is a fully managed in-memory caching service that improves application performance by storing frequently accessed data in memory, reducing database load and latency.

What is ElastiCache?

ElastiCache supports two popular caching engines: Redis and Memcached. It provides automatic patching, monitoring, and scaling capabilities, making it easy to deploy and manage caching solutions.

Redis

Redis is a fast, open-source, in-memory data store that supports data structures like strings, hashes, lists, sets, and sorted sets. Redis offers features like persistence, replication, high availability, and pub/sub messaging. It's ideal for use cases requiring complex data structures and advanced features.

Memcached

Memcached is a simple, high-performance, distributed memory caching system. It's designed for simplicity and speed, focusing on caching key-value pairs. Memcached is ideal for simple caching use cases where you need maximum performance and don't require advanced features like persistence or complex data structures.

Benefits of Caching

Caching improves application performance by reducing database load, decreasing latency, and improving user experience. ElastiCache provides automatic scaling, high availability, and security features to ensure reliable caching solutions.

ElastiCache Glossary

ElastiCache
A fully managed in-memory caching service that improves application performance by storing frequently accessed data in memory, reducing database load and latency.
Redis
A fast, open-source, in-memory data store that supports data structures like strings, hashes, lists, sets, and sorted sets. Offers features like persistence, replication, and high availability.
Memcached
A simple, high-performance, distributed memory caching system designed for simplicity and speed, focusing on caching key-value pairs.
Cache Hit
When requested data is found in the cache, allowing for fast retrieval without accessing the database.
Cache Miss
When requested data is not found in the cache, requiring a database query. The data is then stored in cache for future requests.
TTL (Time To Live)
The amount of time data remains in cache before it expires and is removed. Setting appropriate TTL values is important for cache effectiveness.
Cache Warming
The process of pre-loading cache with frequently accessed data to improve performance after cache restarts or deployments.