FastAPI vs. Fastify vs. Spring Boot vs. Gin Benchmark

Photo by Pietro Mattia on Unsplash

In a previous article, I benchmarked FastAPI, Express.js, Flask, and Nest.js in order to verify FastAPI’s claims of being on par with Node.js. In this article, I am pitting the champion, FastAPI, against a new set of faster competitors. For each framework, I created an API endpoint that returns 100 rows of data from a PostgreSQL database. The data is returned as JSON.

The code for this benchmark can be found here:

https://github.com/travisluong/python-vs-nodejs-benchmark

Disclaimer: I am not a benchmarking expert. This was simply a random experiment I did out of curiosity. This is for entertainment purposes only.

Here are the results:

FastAPI + asyncpg + orjson + gunicorn

Running 10s test @ http://localhost:8000/orjson
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     2.29ms    0.93ms  10.28ms   55.43%
    Req/Sec     2.19k   568.66     3.25k    60.50%
  43575 requests in 10.01s, 333.28MB read
Requests/sec:   4355.30
Transfer/sec:     33.31MB

Fastify + pg

Running 10s test @ http://localhost:3000
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency…