require "kemal" # Define a simple route that returns a message get "/" do "Reusing port 3000" end # Start Kemal with custom server configuration Kemal.run do |config| # Get the server instance from the config # ameba:disable Lint/NotNil server = config.server.not_nil! # ameba:enable Lint/NotNil # Bind the server to port 3000 with reuse_port enabled # reuse_port: true allows multiple processes to listen on the same port # This is useful for load balancing across multiple worker processes server.bind_tcp "0.0.0.0", 3000, reuse_port: true end