Introduction

After publishing a record number of articles on comparing performance of various technologies like Node.js, Deno, Bun, Rust, Go, Spring, Python, etc. for a simple hello world case, I consistently got comments that the articles were good, but weren’t applicable directly for real-world use cases. I was asked to do the same for more ‘real-world’ cases. The articles also (and still) attracted a record number of views. However, the point was well taken. Hello world was the best starting point, but definitely not a ‘real-world’ case.

Real-world use case

This article is a part of the series where I’m going to compare a number of technologies for a real-world case:

Get JWT from the authorization header
Verify JWT & get email from claims
Perform a MySQL query with email
Return the user record

This is a very common real-world case. For the ‘Hello world’ case, I’ve seen the technologies offering somewhere between 50K to 200K RPS. The RPS was high because all the app was doing was returning a simple string. Of course, we won’t expect a 200K RPS for the JWT + MySQL use case. How much we’ll get is yet to be seen.

This article compares NestJS & Go for this use-case. This is an interesting comparison because NestJS (which runs in Node.js) is interpreted, while Go compiles to machine code. Also, verifying JWT is a CPU intensive operation. The compiled language should be faster than interpreted one? Isn’t it? We’ll know very soon.

Due to the large number of articles that will get published, I’ll also be creating an article to index all the real-world cases. At the end of this article, you’ll find a link to that article. Let’s get started.

Test setup

All tests are executed on MacBook Pro M1 with 16G of RAM.

The software versions are:

Node v20.3.0
Go v1.20.4

On Node side, I’m using NestJS framework for the webapp part. By default, the NestJS app runs over the Express framework. The other frameworks on Node side are nest-jwt for verifying & decoding JWTs (nest-jwt is a wrapper over jsonwebtoken), and mysql2 for performing MySQL queries.

On the Go side, I’m using Gin web framework. The other frameworks that I’m using are: golang-jwt for verifying and decoding JWTs, and go-sql-driver for performing MySQL queries.

The HTTP load tester is built over libcurl. There is a pre-created list of 100K JWTs. The tester picks random JWTs and sends it in the Authorization header of the HTTP request.

The MySQL database contains a table called users, which has 6 columns:

The users table is prepopulated with 100K records:mysql> select count(*) from users;
+———-+
| count(*) |
+———-+
| 99999 |
+———-+
1 row in set (0.01 sec)

For each email present in the JWT, there is a corresponding user record in the MySQL database.

Code

NestJS

https://medium.com/media/16fcb2114fd07e9e644de280f744d5f8

https://medium.com/media/0747c89252f1415ea237f8f12c228410

Results

Each test is executed for 1M requests in total. The concurrency levels are 10, 50, and 100 connections. A warm-up of 1K requests is given before taking measurements.

Here are the charts with the results: