Active Active

RedisJSON v2.2 adds support for JSON in [Active-Active Redis Software databases]({{< relref "/operate/rs/databases/active-active" >}}).

The design is based on A Conflict-Free Replicated JSON Datatype by Kleppmann and Beresford, but the implementation includes some changes. Several conflict resolution rule examples were adapted from this paper as well.

Create an Active-Active JSON database

To use JSON in an Active-Active database, you must enable JSON during database creation.

Active-Active Redis Cloud databases add JSON by default. See [Create an Active-Active database]({{< relref "/operate/rc/databases/active-active/create-active-active-database#select-capabilities" >}}) in the Redis Cloud documentation for details.

In Redis Software, Active-Active databases created with or upgraded to Redis version 8 or later automatically enable JSON. For earlier Redis versions, you can enable JSON during database creation:

1. See [Create an Active-Active geo-replicated database]({{< relref "/operate/rs/databases/active-active/create" >}}) in the Redis Software documentation for prerequisites and detailed steps.

2. In the Capabilities section of the Create Active-Active database screen, select JSON:

   {{<image filename="images/rs/screenshots/databases/active-active-databases/create-a-a-db-json-search.png" alt="Select JSON from the Capabilities section.">}}

   {{<note>}} When you select JSON, Search and Query is also selected by default to allow you to index and query JSON documents. If you do not want to use these additional features, you can clear the Search and Query check box. {{</note>}}

3. Configure additional database settings.

4. Select Create.

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