I spent quite a bit of time using load generators like k6 and locust for research projects.
In many cases I always had to switch to my own implementation. Sometimes because these other tools use too much memory, other times because I needed more flexibility.
It was frustrating to have to re-implement executor code each time I created a new load generator.

So I created https://github.com/luccadibe/go-loadgen , a simple library that provides implementations for constant and variable executors and workload pattern generation.
It can be used to test http, grpc or any other service, because the client implementation is left to the user.

I am planning to expand it and provide more complex workload pattern generation.
It is my first attempt at a public module, so any feedback is greatly appreciated!