Version 1.3.0 beta 1 Release
Pre-releaseBig change in this release is the change to to hocon configuration. Read more about it here: https://github.com/lightbend/config/blob/master/HOCON.md
This change was driven by the need to add multi cluster support to kairos (also in this release). Multi cluster support allows you to have one write cluster and 0 or more read clusters. Say you are running Kairos on Cassandra 2.0.14 and you would really like to upgrade but the data is mission critical and the hardware is old so you would rather just create a new cluster with a newer version of Cassandra. With this version you simply set the 2.0.14 cluster as one of your read clusters and then create a new cluster as the current write cluster. Queries are made to all clusters (read and write) and data is only written to the write cluster.
Reasons to use multi cluster:
- Easy way to upgrade to newer versions of C*
- Provides a way to age out old data without using ttl.
- Way of managing kairos data growth.
- Use it to try new versions of Kairos - just set existing cluster as a read cluster.