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https://github.com/matteofigus/api-benchmark

A node.js tool to benchmark APIs
https://github.com/matteofigus/api-benchmark

api benchmark http

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A node.js tool to benchmark APIs

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# api-benchmark

[![Greenkeeper badge](https://badges.greenkeeper.io/matteofigus/api-benchmark.svg)](https://greenkeeper.io/)

A node.js tool that measures and compares performances of single and multiple apis inspired by [BenchmarkJs](http://benchmarkjs.com/).
[![Gitter](https://badges.gitter.im/matteofigus/api-benchmark.svg)](https://gitter.im/matteofigus/api-benchmark?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)

[Why all of this? (blog post)](http://tech.opentable.co.uk/blog/2014/02/28/api-benchmark/)

![https://raw.github.com/matteofigus/api-benchmark-www/master/public/images/screen-shot.png](https://raw.github.com/matteofigus/api-benchmark-www/master/public/images/screen-shot.png)

To see an example of a request/response [look at this gist](https://gist.github.com/matteofigus/6651234).

If you want to benchmark your api via [grunt](http://gruntjs.com/) take a look at [grunt-api-benchmark](https://github.com/matteofigus/grunt-api-benchmark).

* [Requirements](#requirements)
* [Installation](#installation)
* [Usage](#usage)
* API
* [`measure`](#measureservice-routes-options--callback)
* [`compare`](#compareservices-routes-options--callback)
* [`getHtml`](#gethtmlresults-callback)
* [The `Route` object](#route-object)
* [The `Options` object](#options-object)
* [Tuning your machine to benchmark](#tuning)
* [Contributing](#contributing)
* [Why all of this?](http://tech.opentable.co.uk/blog/2014/02/28/api-benchmark/)

# Requirements

Node version: min: **4**, recommended: **8**

Build status: Unix: [![Build Status](https://secure.travis-ci.org/matteofigus/api-benchmark.png?branch=master)](http://travis-ci.org/matteofigus/api-benchmark) | Windows: [![Build status](https://ci.appveyor.com/api/projects/status/7lo2m92rg4cy47u7/branch/master?svg=true)](https://ci.appveyor.com/project/matteofigus/api-benchmark/branch/master)

[![NPM](https://nodei.co/npm/api-benchmark.png?downloads=true)](https://npmjs.org/package/api-benchmark)

# Installation

```shell
npm i api-benchmark
```

# Usage

### measure(service, [routes](#route-object), [[options](#options-object)], callback)

Measures performances of a given api for multiple routes

```js
var apiBenchmark = require('api-benchmark');

var service = {
server1: 'http://myserver:myport/mypath/'
};

var routes = { route1: 'route1', route2: 'route2' };

apiBenchmark.measure(service, routes, function(err, results) {
console.log(results);
// displays some stats!
});
```

### compare(services, [routes](#route-object), [[options](#options-object)], callback)

Compares performances of a given list of api servers with the same routes. Useful in case of load balancers, globalised services, deployment of new versions.

```js
var apiBenchmark = require('api-benchmark');

var services = {
server1: 'http://myserver:myport/mypath/',
server2: 'http://myserver2:myport2/mypath2/'
};

var routes = { route1: 'route1', route2: 'route2' };

apiBenchmark.compare(services, routes, function(err, results) {
console.log(results);
// displays some stats, including the winner!
});
```

All the Http verbs and headers are supported.

```js
var apiBenchmark = require('api-benchmark');

var services = {
server1: 'http://myserver:myport/mypath/',
server2: 'http://myserver2:myport2/mypath2/'
};

var routes = {
route1: {
method: 'get',
route: 'getRoute',
headers: {
Cookie: 'cookieName=value',
Accept: 'application/json'
}
},
route2: 'getRoute2',
route3: {
method: 'post',
route: 'postRoute',
data: {
test: true,
moreData: 'aString'
}
}
};

apiBenchmark.compare(services, routes, function(err, results) {
console.log(results);
// displays some stats, including the winner!
});
```

### getHtml(results, callback)

Given a results object, gets the html report.

```js
var apiBenchmark = require('api-benchmark');

var service = {
server1: 'http://myserver:myport/mypath/'
};

var routes = { route1: 'route1', route2: 'route2' };

apiBenchmark.measure(service, routes, function(err, results) {
apiBenchmark.getHtml(results, function(error, html) {
console.log(html);
// now save it yourself to a file and enjoy
});
});
```

### Route object

#### method

(String, default 'get'): Http verb.

#### route

(String): the route to benchmark

#### headers

(Object): the headers to send. In case of function (that has to return an object) it will be evaulated for each request.

#### data

(Object): the data sent with the request. In case of function (that has to return an object) it will be evaulated for each request.

#### query

(Object): the query sent with the request. In case of function (that has to return an object) it will be evaulated for each request.

#### expectedStatusCode

(Number, default null): if it is a number, generates an error when the status code of the response is different

#### maxMean

(Number, default null): if it is a number, generates an error when the mean value for a benchmark cycle is major than the expected value

#### maxSingleMean

(Number, default null): if it is a number, generates an error when the mean across all the concurrent requests value is major than the expected value

### Options object

#### debug

(Boolean, default false): Displays some info on the console.

#### runMode

(String, default 'sequence'): Can be 'sequence' (each request is made after receiving the previous response) or 'parallel' (all requests are made in parallel).

#### maxConcurrentRequests

(Number, default 100): When in runMode='parallel' it is the maximum number of concurrent requests are made.

#### delay

(Number, default 0): When in runMode='sequence', it is the delay between test cycles (secs).

#### maxTime

(Number, default 10): The maximum time a benchmark is allowed to run before finishing (secs).
Note: Cycle delays aren't counted toward the maximum time.

#### minSamples

(Number, default 20): The minimum sample size required to perform statistical analysis.

#### stopOnError

(Boolean, default true): Stops the benchmark as soon as it receives an error. When false, the benchmark goes on and the errors are collected inside the callback.

# Tuning

You should tune your machine to remove any OS limits in terms of opening and quickly recycling sockets.

### Linux and Mac OS X

```sh
sudo sysctl -w kern.maxfiles=25000
sudo sysctl -w kern.maxfilesperproc=24500
sudo sysctl -w kern.ipc.somaxconn=20000
ulimit -S -n 20000
```

# Docker version

Containerized version of api-benchmark is available here: [docker-api-benchmark](https://hub.docker.com/r/johnshumon/docker-api-benchmark/)

# Contributing

**This project is actively looking for contributors. If you wish to be involved, please open an issue and get in touch. Thanks!**

For the latest updates and release information follow [@matteofigus](https://twitter.com/matteofigus) on twitter.
Feel free to open new Issues in case of Bugs or Feature requests.
Pull requests are welcome: first run all the tests locally doing `npm test`.

### Tests

```shell
npm test
```

### TODO

* Command-line simple interface
* Multi-thread requests
* SOAP
* Killer mode - [ask for details](https://twitter.com/matteofigus)

# License

MIT