AWS launches its Amazon MemoryDB for Redis service into general availability

guest · Aug 23, 2021

AWS launches its Amazon MemoryDB for Redis service into general availability
August 19, 2021
https://siliconangle.com/2021/08/19/aws-launches-amazon-memorydb-redis-service-general-availability/

Amazon Web Services Inc. today announced the general availability of Amazon MemoryDB for Redis, a managed in-memory database that promises to simplify application development projects.

For recommendation engines and other applications that prioritize speedy data access, companies often set up a cache.
The software most commonly used for this task is the open-source Redis system, after which AWS’ newly launched MemoryDB for Redis service is named.
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The challenge for companies is that creating such a setup often requires a great deal of custom code. With MemoryDB for Redis, AWS is promising to reduce the need for custom code by removing the requirement to maintain separate database and cache environments. MemoryDB for Redis combines the features of a cache and a database in a single service, allowing companies to maintain just one data management system instead of two.

Another key feature of the service is that it’s compatible with Redis. Companies can move existing applications built using Redis to MemoryDB for Redis without major code modifications, AWS says.
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AWS Announces General Availability of Amazon MemoryDB for Redis

New Redis-compatible, in-memory database delivers ultra-fast performance with sub-millisecond latency and high durability
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guest · Aug 23, 2021

'Worst' AWS service ever? Cloud giant introduces Redis-compatible MemoryDB – to mixed response
August 23, 2021
https://www.theregister.com/2021/08/23/aws_memorydb_reaction/

AWS has introduced MemoryDB, a Redis-compatible database manager that combines in-memory performance with persistence.

Redis (Remote Dictionary Server) is an in-memory key-value database manager sometimes thought of as a cache – but MemoryDB uses a distributed transactional log so that the database is durable as well as fast.

"You can use MemoryDB as a single, primary database service for your workloads requiring low-latency and high throughput instead of separately managing a cache for speed and an additional relational or nonrelational database for reliability," say the docs.
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AWS billing consultant Corey Quinn does not think Redis needs to worry. "Amazon MemoryDB for Redis may be the worst @awscloud service ever launched from virtually any perspective you care to name," he said on Twitter, noting that "instead of fixing/expanding their existing managed Redis service, @awscloud launched a brand new service instead."

Quinn describes the data write fee as a "monstrous 20¢ per GB charge," and found that a default experiment he created would cost $2,000 per month, concluding: "MemoryDB is the absolute best sales pitch for Redis that I have ever seen."
Another user noted that "since MemoryDB for Redis doesn't (currently) provide support for Redis modules, it's a lot less compelling [than] Redis Enterprise, which does."
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All that said, the combination of in-memory performance with reliable durability is inherently attractive and less complex than using Redis as a cache in front of another database manager. A question to ponder is whether MemoryDB is an example of "how open source works, when done well."
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AWS launches its Amazon MemoryDB for Redis service into general availability

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