In simple English
Fortio tests how much traffic your website or server can handle before it slows down or breaks. You tell it how many requests to send every second, and it measures how long each request takes. It also includes built-in test servers that echo back requests or simulate delays and errors. This helps you find weak spots in your code before your users do. It costs nothing to run, though you need some technical skill to set it up.
What it is
A load testing library (a collection of pre-written code you can build into your own software), command-line tool, advanced echo server, and web user interface written in the Go programming language (Go is a compiled programming language created by Google for building fast and reliable software). It runs tests at a steady query rate and records response times in detail.
What it is good for
Solo builders who want to test their web APIs or microservices under heavy load to make sure they do not crash under sudden traffic spikes.
- Runs tests at a precise, steady request rate without sudden bursts.
- Includes a web dashboard for viewing graphs of your test results.
- Provides built-in test servers to check HTTP, gRPC, TCP, and UDP connections.
- Requires comfort with the command line to configure and run tests.
- Uses very little memory, but high request rates can consume all available CPU on your machine.
- Documentation assumes prior knowledge of performance testing concepts.
wrk, Apache Bench (ab), or writing custom scripts to bombard your server with traffic
Grafana, Prometheus, or Docker for running test environments
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docker run -p 8080:8080 -p 8079:8079 fortio/fortio server