# Redis

## Description

Redis which stands for Remote Dictionary Server, is a fast, open source, in-memory, key-value data store.

It provides built-in replication, different levels of on-disk persistence, and provides high availability with [Sentinel](https://redis.io/topics/sentinel).

A [wide range of developer tools for most popular languages](https://redis.io/clients) exists.

{% embed url="<http://redis.io/>" %}

## Platform as a Service

Redis is deployed on site in **cegedim.cloud** data centers.

**cegedim.cloud** guarantees the same level of service as the Compute offer: instance deployment, operational maintenance, flexibility, security and monitoring are all provided by our experts.

Two topologies are available:

* Standalone instance
* Sentinel cluster of 3 instances

Sizing can be configured to suit your needs.

<table data-full-width="false"><thead><tr><th width="267"></th><th width="237">Standalone</th><th>Cluster</th></tr></thead><tbody><tr><td>Instance(s)</td><td>1</td><td>3</td></tr><tr><td>CPU (per instance)</td><td>2 - 16 vCPU</td><td>2 - 16 vCPU</td></tr><tr><td>RAM (per instance)</td><td>4 - 384 GB</td><td>4 - 384 GB</td></tr><tr><td>Supported version(s)</td><td><ul><li>6.2</li><li>7.2</li></ul></td><td><ul><li>6.2</li><li>7.2</li></ul></td></tr><tr><td>TLS/SSL</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td></tr><tr><td>Monitoring</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td></tr><tr><td>24x7 Monitoring</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td></tr><tr><td>Backup</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td></tr><tr><td>Data replication (DRP)</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span> Option</td></tr><tr><td>Availability</td><td>99.8%</td><td>99.9%</td></tr><tr><td>Multi-AZ deployment</td><td><span data-gb-custom-inline data-tag="emoji" data-code="274c">❌</span></td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td></tr><tr><td>Self-service</td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td><td><span data-gb-custom-inline data-tag="emoji" data-code="2705">✅</span></td></tr></tbody></table>

The Sentinel cluster topology is production-ready, with 3 instances distributed across all the Availability Zones in a target Area.

Each instance runs the Redis and Sentinel processes. One instance is primary and the other two are replicas.

For more information, please visit [Redis - Features](/databases/redis/redis-features.md).

## Billing

Billing is processed monthly and based on the number of nodes, plus additional costs for storage, backup and 24/7 monitoring.

Cost estimates for Redis are available via your Service Delivery Manager.


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