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Gatling
Gatling

118
95
+ 1
2
Loader.io
Loader.io

57
58
+ 1
15
Locust
Locust

61
71
+ 1
4
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What is Gatling?

Gatling is a highly capable load testing tool. It is designed for ease of use, maintainability and high performance. Out of the box, Gatling comes with excellent support of the HTTP protocol that makes it a tool of choice for load testing any HTTP server. As the core engine is actually protocol agnostic, it is perfectly possible to implement support for other protocols. For example, Gatling currently also ships JMS support.

What is Loader.io?

Loader.io is a free load testing service that allows you to stress test your web-apps/apis with thousands of concurrent connections.

What is Locust?

Locust is an easy-to-use, distributed, user load testing tool. Intended for load testing web sites (or other systems) and figuring out how many concurrent users a system can handle.
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Why do developers choose Gatling?
Why do developers choose Loader.io?
Why do developers choose Locust?

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    What tools integrate with Gatling?
    What tools integrate with Loader.io?
    What tools integrate with Locust?
    What are some alternatives to Gatling, Loader.io, and Locust?
    Selenium
    Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should!) also be automated as well.
    BlazeMeter
    Simulate any user scenario for webapps, websites, mobile apps or web services. 100% Apache JMeter compatible. Scalable from 1 to 1,000,000+ concurrent users.<br>
    Apache JMeter
    It is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions.
    AWS Device Farm
    Run tests across a large selection of physical devices in parallel from various manufacturers with varying hardware, OS versions and form factors.
    Blitz
    Build bulletproof, scalable solutions with Blitz - a simple and fun service for load testing web apps and APIs in the cloud. Blitz offers powerful yet simple capabilities including continuous monitoring, performance testing and remediation. Blitz enables you to instantly burst up to 50,000 concurrent users against your app in seconds from multiple points of presence around the world.
    See all alternatives
    Decisions about Gatling, Loader.io, and Locust
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    Interest over time
    Reviews of Gatling, Loader.io, and Locust
    Avatar of ashokkn
    Staff Software Engineer at Intuit
    Review ofLocustLocust

    This is the best open source tool i have ever come across which does load testing at its best.

    Python config code is really simple to write and good part is its extendable and there are many hooks available ... what else you need ..

    Lastly, the web UI to monitor your swarming activity is too good and very helpful for identify bottlenecks and spikes real-time.

    How developers use Gatling, Loader.io, and Locust
    Avatar of StackShare
    StackShare uses Loader.ioLoader.io

    I don’t remember exactly how I heard about Loader.io. I think I was adding load testing services to Leanstack. I saw it was a SendGrid Labs project, so there would be competent people behind it. And since they had a Heroku Add-On it was easy to get started. Loader.io is cool because it’s super simple to set up.

    We have about 30 tests set up for different pages: loader.io setup

    When executing tests, you can see error rate and average response times. But we also check the Heroku logs to see if they are real errors.

    My biggest complaint: figuring out what load to set for your tests is difficult. We don’t understand the language they use and no one we’ve spoken to that has used Loader.io understands it either. We’ve been testing at 250 clients (maintain client load) for all of our tests on 2 dynos. That means a constant load of 250 people using the site over a minute, or so I thought. The number of requests at the end of the test suggests it’s more like 250 additional clients hitting the site every second for a minute. But I guess accommodating a higher load is better anyways? 250 concurrent users seems to be our average HN traffic spike so that’s why we went with that load.

    Avatar of Volkan Özçelik
    Volkan Özçelik uses Loader.ioLoader.io

    I use loader.io for distributed load testing.

    That especially matters when you have a cross-region load-balancer and you want to make sure how your app behaves on a global scale.

    Avatar of theskyinflames
    theskyinflames uses GatlingGatling

    Stress loading testing tool.

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