Prerequisites

Make sure you have Docker and Go installed.

SLRun was developed and tested on Ubuntu 25.10.

Configuration

See example_config.json and example functions in functions/.

{
  "policy": "always_hot",
  "functions": [
    {
      "name": "func1",
      "build_dir": "./functions/func1"
    },
    {
      "name": "func2",
      "build_dir": "./functions/func2"
    }
  ]
}

For each function, the name must be unique, and the directory pointed by build_dir must contain a Dockerfile located at its root, along with all other files required to build the function's image.

Currently supported policies are always_hot, always_cold and cold_on_idle.

Execution

To use example_config.json and port 1337, you may use

go build
./slrun --port 1337 --config ./example_config.json

To verify that it works, run

curl localhost:1337/func1
curl localhost:1337/func2

You should see the responses from the functions.