TEN YEARS OF IMPROVEMENTS IN POSTGRESQL'S OPTIMIZER
PostgreSQL's query optimizer has improved massively over the past decade. Using the Join Order Benchmark (JOB), this author shows that tail latency has been nearly halved between PostgreSQL versions 8 and 16, with each major version offering an average 15% performance increase. One of the best decisions teams can make to make their database query speeds faster is to simply keep their Postgres instances up to date.