Node 10 Performance Benchmarks

Benchmarking stream perforamce with Express.js on Node.js version 10

Benchmarks are measured with wrk.

Overview

data endpoints pull from a JSON file, filter the JSON by a parameter in the endpoint, and return the resulting set.
proxy endpoints return the full JSON file.
Each end point has a stream version and promise version.
All endpoints are GETs.
Routes are defined in /src/routes/AppRouter.js

Endpoint	File Size	Description	Method
`/`		Returns `pid` and `uptime`
`/data/large/stream/19103`	`200mb`	Returns 2017 Philadelphia parking violations for specificed zipcode.	Uses `createReadStream` and `JSONStream`
`/data/large/promise/19103`	`200mb`	Returns 2017 Philadelphia parking violations for specificed zipcode.	Uses `fs.readFile` and `JSON.parse()` and `filter()`
`/data/small/stream/spk_1`	`4mb`	Returns all of the segments for specified speaker from podcast transcription.	Uses `createReadStream` and `JSONStream`
`/data/small/promise/spk_1`	`4mb`	Returns all of the segments for specified speaker from podcast transcription.	Uses `fs.readFile` and `JSON.parse()` and `filter()`
`/proxy/large/stream/`	`200mb`	Returns 2017 Philadelphia parking violations.	Uses `createReadStream`
`/proxy/large/promise/`	`200mb`	Returns 2017 Philadelphia parking violations.	Uses `fs.readFile`
`/proxy/small/stream/`	`4mb`	Returns all of the segments for all speakers from podcast transcription.	Uses `createReadStream`
`/proxy/small/promise/`	`4mb`	Returns all of the segments for all speakers from podcast transcription.	Uses `fs.readFile`

There are three executables in the bin directory:

www-cluster - runs the server in a cluster of processes
www-single - runs the server in a single process. node-clinic needs the server to run in a single process.
download-large-data - Downloads dataset that was too large to check into git.

$ npm i

$ node bin/download-large-data

$ npm start

There is a .paw and postman.json file to run example requests in the docs directory.

node-clinic was used to watch CPU and memory usage, along with other metrics, during benchmarking.

Install with

npm install -g clinic

Have clinic run and monitor our server

clinic doctor -- node bin/www-single

Then run one of the following benchmark commands below.