https://www.infoworld.com/article/4034908/google-spanner-gets-a-columnar-engine-to-unite-oltp-and-olap-workloads.html
Google Spanner gets a columnar engine to unite OLTP and OLAP workloads | InfoWorld
Aug 7, 2025 - The preview feature aims to simplify real-time analytics on transactional data, reducing ETL complexity and boosting performance.
google spannergetsengineuniteoltp
https://mariadb.org/events/mariadb-day-brussels/oltp-throughput/
How MariaDB Achieved 2.5× OLTP Throughput in Enterprise Server 11.8 - MariaDB.org
enterprise servermariadbachievedoltpthroughput