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ElastiCache supports three in-memory caching engines: Valkey, Memcached, and Redis OSS. [2] As a web service running in the computing cloud, Amazon ElastiCache is designed to simplify the setup, operation, and scaling of Valkey, Memcached, and Redis OSS deployments. Complex administration processes like patching software, backing up and ...
2 node High Availability Cluster network diagram. The most common size for an HA cluster is a two-node cluster, since that is the minimum required to provide redundancy, but many clusters consist of many more, sometimes dozens of nodes.
Valkey is an open-source in-memory storage, used as a distributed, in-memory key–value database, cache and message broker, with optional durability. [8] Because it holds all data in memory and because of its design, Valkey offers low-latency reads and writes, making it particularly suitable for use cases that require a cache.
Redis popularized the idea of a system that can be considered a store and a cache at the same time. It was designed so that data is always modified and read from the main computer memory, but also stored on disk in a format that is unsuitable for random data access.
The term "failover", although probably in use by engineers much earlier, can be found in a 1962 declassified NASA report. [2] The term "switchover" can be found in the 1950s [3] when describing '"Hot" and "Cold" Standby Systems', with the current meaning of immediate switchover to a running system (hot) and delayed switchover to a system that needs starting (cold).
Redis Ltd. (originally Redis Labs, Garantia Data) is an American private computer software company headquartered in Mountain View, California. Redis is the sponsor of the source-available in-memory NoSQL database of the same name and the provider of Redis Enterprise software, cloud services, and tools for global companies. [ 2 ]
Elastic Volumes makes it possible to adapt volume size to an application's current needs, using Amazon CloudWatch and AWS Lambda to automate volume changes. Amazon EBS Encryption encrypts data at rest for EBS volumes and snapshots, without having to manage a separate secure key infrastructure.
Redis: Key-value Yes. But last few queries can be lost. [21] Yes Yes [22] Yes [23] No Ansi-C VMWare, Memcache BSD: ScyllaDB: Key-value Yes Yes Distributed and Replication [24] No [25] Unknown C++ Apache Cassandra: AGPL v3: SimpleDB (Amazon.com) Document & Key-value Yes Yes (automatic) Yes Unknown likely Erlang Amazon.com Amazon internal only ...