Middleware runs in restricted hybrid runtime with limited APIs

7/10 High

Next.js middleware executes in a hybrid runtime that supports only a restricted subset of Web APIs and Node.js, preventing direct database connections, file system access, and session management. This awkward middle ground doesn't align with common development patterns.

Next.js

Sources

https://www.flaming.codes/posts/beyond-nextjs-state-fullstack-javascript-frameworks-2025
https://arrangeactassert.com/posts/nextjs-understanding-the-trade-offs/

Collection History

Query: “What are the most common pain points with Next.js in 2025?”3/27/2026

Middleware runs in a weird hybrid runtime that supports some Web APIs and a restricted subset of Node.js. Restricted Node.js API usage: The Next.js Edge Runtime explicitly excludes many native Node.js APIs (such as fs, net, etc.), making tasks like direct database connections or session management impossible in middleware.

Created: 3/27/2026Updated: 3/27/2026