Load Testing Blog¶

Mar 14, 2020
in Load-Testing
12 min read

Gatling: Simulation Scripts Parameterization

This blog post is a tutorial for writing Gatling scripts to load test web applications. It follows our first getting started with Gatling simulation scripts article.

The application under test is a fake e-commerce. We are going to create a Virtual User that browses articles in this shop. To create a dynamic load test we will cover several topics:

Feeders to inject values taken from a static file,
Regular Expression extractors to extract value(s) from a server response and inject it in subsequent requests,
Cookies management.

Mar 5, 2020
in Load-Testing
10 min read

Gatling: Getting Started With Simulation Scripts

Gatling is a load testing tool for measuring the performance of web applications. As such, it supports the following protocols:

HTTP,
WebSockets,
Server-sent events.

Other protocols are also supported either by Gatling itself (like JMS) or by community plugins.

Gatling load testing scenarios are defined in code, more specifically using a specific DSL. This guide focuses on the basics of writing a simulation to test an HTTP application: OctoPerf's sample PetStore.

Oct 9, 2019
in Development
6 min read

Fullstack Reactive Server Sent Events

Reactive programming is a programming paradigm aimed at maintaining overall coherence by propagating changes from a reactive source (modification of a variable, user input, etc.) to elements dependent on this source.

Reactive applications are more and more important today as they are:

Highly Available: the system must respond quickly no matter what,
Resilient: the system must always remain available, even in case of error or even if it is overloaded,
Message Oriented: the system uses asynchronous messages.

Which meets the requirements of today's users.

Sep 25, 2019
in Events
3 min read

Test camp 2019: OctoPerf in Poland

For our first time in Poland, we decided to attend to TestCamp conference. TestCamp is an event-based in Wroclaw, Poland. Test Army is behind the organisation. This event was split in two days, the first one, we trained a few people on OctoPerf. The second one as exhibitor and speaker. More than 500 people attended on Saturday, which is quite an impressive number.

Sep 19, 2019
in DevOps
16 min read

How To Deploy InfluxDB / Telegraf / Grafana on K8s?

This article follows our first blog post related to deployment on Kubernetes. It is a step-by-step guide explaining how to deploy the InfluxDb/Telegraf/Grafana stack.

More importantly we will se:

How to map a configuration file using a ConfigMap resource?
How to map sensitive environment variables using the Secrets object?
How to use Kompose to generate declarative K8S configuration?
how to mount a data volume with a PersistentVolumeClaim?
As well as several other tips like connecting to a running Pod, displaying logs or cross container communication using kube-dns.

Here again we rely on declarative configuration of K8s to install the InfluxDB/Grafana stack. It's the easiest way to do since there are many configuration objects to create.