A performance benchmark of Express, Express with Bun and Elysia with Bun

Prerequisites

Make sure you have node and bun installed

Make sure you have k6 installed

For windows, you can install it through choco

choco install k6

For Mac, you can install through brew

brew install k6

For linux, you can install it through snap or apt

sudo apt install k6

Setup servers

Start all the servers using the following command (open three different terminal sessions for them)

# in apps/express-app directory
node index.ts
# in apps/bun-express-app directory
bun run index.ts
# in apps/elysia-app directory
bun run src/index.ts

Run benchmark

Run the following command to run the benchmark

node script.js

After the tests have been run you can view the results in the results directory

Results

After making 10 runs with a configuration of 10 virtual users in k6, I had the following results.

System specs: 16GB DDR4 RAM, Intel i5-6440HQ @ 2.60GHz, LITEON SSD 128GB

Contributions

I don't think I have the best implementation as I still had to manually collate the results. I think there's a much better way to automate the benchmarks and if you think you have an idea, I will love to see them.