Load Testing Blog¶

Apr 24, 2018
in JMeter
9 min read

JMeter Basic Authentication Explained

You're often confronted with web application which requires user to authenticate. Basic Access Authentication is one of the most simple authentication method:

Client includes an HTTP Header like Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=, with Base64 encoded username and password (username:password equals dXNlcm5hbWU6cGFzc3dvcmQ= in Base64) in each request,
Server grants access whenever the provided username and password are correct.

This guide will teach you 3 different ways to handle basic authentication:

Using an HTTP Authorization Manager,
Using a JSR223 PreProcessor with a custom script,
Or using the base64Encode function from Custom Functions Plugin.

Let's see dive into JMeter with examples you can use yourself!

Apr 23, 2018
in JMeter
9 min read

Rest API Testing with JMeter (Step by Step Guide)

I'm sure you're here because you need to load test a Json Rest API. It's not a surprise since Rest API are increasingly popular these days.

That's the purpose of this guide: help you load test a Json Rest API through a concrete example, OctoPerf's Json Rest API.

And this guide will completely get you through the following knowledge:

Handle Rest API Login using an Http POST Request,
Extract Variables from a Json Response and reuse it later in the script,
And verify Json responses using JMeter Json Assertion (introduced in JMeter 4).

No theory here, only practice: everything is based on a realistic Rest API (not a dummy example). You can download the sample JMX while following the tutorial.

Ready to learn? Let's go!

Apr 19, 2018
in JMeter
15 min read

JMeter Assertions: The Ultimate Guide

Whether you want to:

Check if the server response contains a specific string,
Or Verify the server returned an HTTP 200 OK,
Or check the value of a json field (using JsonPath like $.store..price).

Assertions are the way to go.

The problem is: you don't know how to get started. And the number of available assertions is overhelming. No worries!

This ultimate guide on JMeter Assertion explores every single assertion type through comprehensive examples. You'll know when and how to use each kind of assertion wisely. Once you've read this guide, assertions won't have any secrets for you anymore! Let's go.

Apr 18, 2018
in Development
6 min read

D3.js Tutorial: Drag and Drop

In our previous tutorial we explained how to handle click events with D3.js to add, remove and select shapes in a SVG chart.

Using the same map example this tutorial explains how to handle drag and drop with D3.js. To follow this guide you must know about:

D3.js installation,
D3.js selectors,
and D3.js data binding.

All these concepts are explained in our D3 getting started guide.

Apr 17, 2018
in Development
6 min read

D3.js Tutorial: Mouse Events Handling

This tutorial explains how to handle mouse events using D3.js along with other useful notions:

It consists in a series of explained code samples and live examples. If you are not familiar with D3.js or simply need a reminder, please read our D3.js getting started tutorial.