NifraFastify vs Express in 2026
Updated 2026-08-04 · Disclosure: we build Nifra, a third option measured in the same runs. The Fastify-vs-Express verdict below stands on its own.
The eternal Node question, answered with measurements instead of vibes: Fastify has higher measured throughput than Express in our current published run, has real validation built in, and its plugin system is better engineered. Express still wins on ubiquity. Details, then the verdict.
Throughput
| Workload | Express | Fastify |
|---|---|---|
| GET /users/:id | 35,780 req/s | 57,051 req/s |
| POST /users (validated) | 21,369 req/s | 41,467 req/s |
(oha @ 50 conns, Node 26.10.0, identical route semantics; Express validates with its usual middleware, Fastify with compiled JSON Schema. Full methodology + every framework we measure: benchmarks.) A raw node:http baseline does measured 48,376 GET req/s in the same runs.
Beyond speed
- Validation: Fastify ships JSON-Schema validation compiled to fast functions; Express leaves it to middleware you assemble. This is the biggest practical gap - unvalidated input on a public endpoint is how incidents start.
- TypeScript: both are typed via
@types; Fastify's generics and type providers go further. Neither gives you a typed client for your frontend. - Ecosystem: Express has the largest middleware library ever assembled and every tutorial ever written. Fastify's plugin encapsulation is better engineered for large codebases. Express wins breadth; Fastify wins architecture.
- Maintenance: both are actively maintained in 2026; Express 5 finally landed but changed little structurally.
Verdict
New backend-only Node service: Fastify, and it isn't close - you get higher measured throughput and validation as a first-class citizen. Existing Express app that works: keep it; migrations rarely pay for themselves on speed alone.
When neither is the answer
Both are backend-only. If the API and a frontend are one product, a typed contract that crosses that boundary saves more engineering time than any req/s number: Nifra infers the entire client from the server's TypeScript type (zero codegen), serves SSR for five UI frameworks, validates by default, and in the same benchmark runs level-to-ahead of Fastify on Node (the honest head-to-head) while the same app delivers about 1.8x as many GET /users/:id requests per second on Bun as Node (measured on the same code). Different category, same speed class - worth knowing it exists before defaulting.