December 2024 newsletter

The December issue of the ClickHouse newsletter covers various topics including query optimization, SQL-based observability with Grafana, and the introduction of new features such as parallel hash join and vector similarity indexes. The newsletter also announces upcoming events, product updates, and community contributions, including a featured community member Azat Khuzhin who has been working on performance optimization and feature enhancements across various components. Additionally, there are resources available for training and learning about ClickHouse, including free virtual training sessions and the upcoming ClickHouse User Conference in San Francisco.