Which Database Should You Choose in 2026?
PostgreSQL vs MySQL, the two leading open-source relational databases, compared for SaaS and data-heavy web apps in 2026: features, performance, JSON support, extensibility, and replication. We cover when PostgreSQL's advanced features win, and when MySQL's ecosystem compatibility still makes it the pragmatic pick.
PostgreSQL is our default choice for most new projects thanks to its advanced features, standards compliance, and extensibility. MySQL remains a solid pick for read-heavy workloads and when ecosystem compatibility (e.g., WordPress, legacy systems) is a priority.
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