In simple English
This tool simulates thousands of users visiting your website at the same time. It helps you find out how much traffic your server can handle before it slows down or crashes. You can test web pages, databases, and login systems with it. It runs on your computer and is free to use. You need Java installed on your machine to make it work.
What it is
Apache JMeter is a Java desktop application designed to load test applications and measure performance under heavy traffic. It generates concurrent requests to servers and records how long responses take.
What it is good for
Solo builders who want to test if their web app can survive a product launch or a spike in traffic without spending money on commercial testing services.
- Tests many kinds of servers including web, databases, and email.
- Generates visual charts and HTML performance reports.
- Can run tests from the command line for automated testing.
- Requires Java 17 to run on your computer.
- The user interface looks old and takes time to learn.
- Running massive loads needs a powerful machine or multiple servers.
Paid load testing services
Grafana
- locustio/locust28k stars
Writes load test scenarios in Python code instead of using a desktop graphical interface.
- nicolargo/glances34k stars
A live view of one computer's health, in a terminal, in a browser, or through an AI assistant.
- dokku/dokku32k stars
A small platform you install on one server, which builds and runs an app every time you push code to it.
- netbox-community/netbox22k stars
A database of what a network and its hardware are supposed to look like, which other programs can read.
cd bin ./jmeter