Choosing a database shouldn't be based on vibes. We compare speed and JSONB flexibility to help you pick the right engine for your next application.

The 2026 verdict is that Postgres has essentially consumed the document-store use case for 90% of web apps. It is the boring, reliable, and shockingly fast choice that survives every trend.
Creado por exalumnos de la Universidad de Columbia en San Francisco
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Creado por exalumnos de la Universidad de Columbia en San Francisco

Imagine staring at a monitoring dashboard painted entirely red because your database hit a performance cliff during a simple reporting task. Many developers choose MongoDB for its "vibes-based" flexibility, but as of 2026, the gap has collapsed. In a test of one million rows, PostgreSQL 17 handles complex analytical aggregations nearly three times faster than MongoDB 8.0. While Mongo still wins on bulk document inserts, Postgres now bridges the gap with its JSONB type, giving you relational integrity and document flexibility in one engine. We’re breaking down which side of the 1M ops test your web app falls on.