https://www.exygen.fr/en/tags/development/Recent content in Development on ExygenHugo -- gohugo.ioenCopyright (c) 2020 - 2023, Exygen; all rights reserved.Sun, 09 Aug 2026 00:00:00 +0000https://www.exygen.fr/en/blog/2026/08/09/persistencejs/Sun, 09 Aug 2026 00:00:00 +0000https://www.exygen.fr/en/blog/2026/08/09/persistencejs/ <p>Every Exygen application needs, sooner or later, the same thing: describe a data model, persist it to a database, evolve it without breaking production, and query it cleanly from code. Until now, each application reinvented its own data access layer. <strong>persistence-js</strong> puts an end to that.</p> <h2 id="the-problem">The problem</h2> <p>In TypeScript/Node, you often have to choose between two bad options: a raw SQL layer (fast, but where you hand-write every <code>INSERT</code>/<code>UPDATE</code> and recompute relations everywhere), or an ActiveRecord-style ORM (entities that inherit from a base class, implicit change tracking, and switching database engines that is nearly impossible in practice).</p>