ScyllaDB Open Source Release 3.1.3

ScyllaDB Open Source 3.1.3 is a bugfix release for the 3.1 stable branch of ScyllaDB, ensuring backward compatibility and support for rolling upgrades. This release addresses several stability and performance issues, such as excessive IO resource use during updates of materialized views, failures with User Defined Types (UDTs), and read amplification caused by materialized views. It is essential to note that ScyllaDB 3.2.1 is the latest stable release, and version 3.3 is in the release candidate phase, with support for the 3.1.x release ending once 3.3 is officially released. The update also provides specific instructions for users upgrading from ScyllaDB 3.1.0, emphasizing the need to enable compatibility mode in the scylla.yaml file.