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Amazon ElastiCache vs RSMQ: What are the differences?
Amazon ElastiCache: Deploy, operate, and scale an in-memory cache in the cloud. ElastiCache improves the performance of web applications by allowing you to retrieve information from fast, managed, in-memory caches, instead of relying entirely on slower disk-based databases. ElastiCache supports Memcached and Redis; RSMQ: A lightweight message queue for Node.js that requires no dedicated queue server. Just a Redis server. tl;dr: If you run a Redis server and currently use Amazon SQS or a similar message queue you might as well use this fast little replacement. Using a shared Redis server multiple Node.js processes can send / receive messages.
Amazon ElastiCache and RSMQ are primarily classified as "Managed Memcache" and "Message Queue" tools respectively.
Some of the features offered by Amazon ElastiCache are:
- Support for two engines: Memcached and Redis
- Ease of management via the AWS Management Console. With a few clicks you can configure and launch instances for the engine you wish to use.
- Compatibility with the specific engine protocol. This means most of the client libraries will work with the respective engines they were built for - no additional changes or tweaking required.
On the other hand, RSMQ provides the following key features:
- Lightweight: Just Redis and ~500 lines of javascript.
- Guaranteed delivery of a message to exactly one recipient within a messages visibility timeout.
- Received messages that are not deleted will reappear after the visibility timeout.
RSMQ is an open source tool with 1.48K GitHub stars and 109 GitHub forks. Here's a link to RSMQ's open source repository on GitHub.
Pros of Amazon ElastiCache
- Redis58
- High-performance32
- Backed by amazon26
- Memcached21
- Elastic14
Pros of RSMQ
- Simple, does one thing well2
- Comes with a visibility timeout feature similar to AWS1
- Written in TypeScript1
- Written in Coffeescript1
- Backed by Redis1