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Amazon ElastiCache

References: AWS docs, sarc.io



What is ElastiCache?

  • Amazon ElastiCache is a service that makes it easy to deploy, operate, and scale In-memory data stores or Cache in the cloud
  • Amazon ElastiCache improves web application performance by enabling information retrieval from fast managed In-memory data stores rather than relying entirely on slower disk-based databases
  • Amazon ElastiCache supports two open-source in-memory engines

1. Redis

  • Fast open-source in-memory data store and caching
  • Amazon ElastiCache for Redis is a Redis-compatible in-memory service that provides the ease of use and capabilities of Redis along with the availability, reliability, and performance required for demanding applications
  • Supports single nodes and up to 15 shard clusters, allowing in-memory data to scale up to 3.55TiB
  • A suitable service for high-performance use cases such as web, mobile apps, gaming, advertising technology, and IoT

2. Memcached

  • Widely adopted memory caching system
  • ElastiCache is protocol-compatible with Memcached, so major tools used in existing Memcached environments work seamlessly with ElastiCache


About ElastiCache

  • Amazon ElastiCache

    • Automatically detects and replaces failed nodes to reduce overhead associated with self-managed infrastructure
    • Provides highly resilient systems that
      • Mitigate the risk of database overload that can cause long website and application load times

  • Amazon ElastiCache integrates with Amazon CloudWatch to improve visibility of key performance metrics related to Redis or Memcached nodes

  • Amazon ElastiCache allows you to add an in-memory layer to your infrastructure in minutes using the AWS Management Console



Amazon ElastiCache for Redis


What is Amazon ElastiCache for Redis?

  • Amazon ElastiCache is a web service that allows you to set up, manage, and scale distributed in-memory data stores or cache environments in the cloud
    • Provides scalable, cost-effective, high-performance caching solutions
    • Eliminates the complexity associated with deploying and managing distributed cache environments
  • Existing applications using Redis can use ElastiCache with minimal modifications
    • Applications only need information about the hostname and port number of the ElastiCache nodes you deploy
  • ElastiCache for Redis has several features to provide more reliable services for critical production deployments