AWS ElastiCache: Memcached or Redis

Last Updated : 28-Feb-2021

ElastiCache Overview

  • open-source compatible in-memory data store.
  • boost the performance of your existing databases by retrieving data from high throughput and low latency in-memory data stores.
  • ideal for real-time use cases like Caching, Session Stores, Gaming, Geospatial Services, Real-Time Analytics, and Queuing
  • choose Redis or Memcached depending on your use case

ElastiCache Benefits

  • high performance: in memory data store proving sub millisecond response times
  • fully managed
  • scalable with scale out, and up with sharding for writing and replicas for reading

Feature Comparison


  • Sub-millisecond latency
  • easy to user
  • data partitioning
  • multiple programming language support

Memcached Only Features

  • multi-theaded architecture

Redis Only Features

  • Advanced data structures
  • Sanpshots
  • Replication
  • Transactions
  • Pub/Sub
  • Geospatial support
  • Lua script support – Lua is a fast programming language used for games, web applications and image processing

ElastiCache Pricing

  • Pricing is per hour based on usage.
  • Around 30 different standard node types are available from cache.t2.micro with 1 vCPU and 0.5GiB at $0.017 per hour to cache.m6g.16xlarge with 64 vCPU and 209GiB and 25 Gigabit network performance at $3.112 per hour on demand.
  • Around 20 different memory optimized node types are available from cache.r4.large with 2 vCPU and 12.3GiB and 10GiB network performance at $0.228 per hour to cache.r6g.16xlarge with 64 vCPU and 419GiB and 25 Gigabit network performance at $6.567 per hour on demand.
  • Reserved pricing is available on a 1 or 3 year basis with no upfront, partial upfront or full upfront pricing with discounts between 29% and 36% for a 1 year term and 47% to 55% for a 3 year term.

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