Redis

Redis is an open source, in-memory data structure store, used as database, cache and message broker.

Version

The version currently installed by the add-on is : Redis 7.2.4

Database Daily Backup and Retention

By default, Clever Cloud performs a free backup every day, with a retention of seven days. Retention and frequency can be customized for Premium customers.

Each backup can be found in the add-on dashboard in the web console, along with the credentials.

A backup is a tar.gz archive containing both the .rdb and .aof files. You can extract this archive and run redis-server in the extracted folder to access data.

Leader / follower topology

By default, all redis add-ons are configured as leaders. You can set up a redis add-on as a follower from the add-on panel (in the “Add-on information” tab). You need to set the leader information (host, port, password) to start the replication. The add-on panel will display the sync process status so that you know when the synchronisation is done.

While a redis database is configured as a follower, it’s read-only.

Redis-cli usage

You can use Redis URI to connect to your databases with -u option. However, the generated URI in the information tab (REDIS_URL) of you add-on is not a legal syntax to use redis-cli.

This is the correct syntax for redis-cli URI : redis ://password@host:port[/database]

Default retention policy

By default, the eviction policy is noeviction. If you plan to use Redis as a LRU cache, please contact the support to change its policy.