How Can I Automate Go Server Recompilation and Reloading on File Changes?

Automatic Server Recompilation and Reload on File Changes in Go

Automating the process of recompiling and reloading a Go server on file changes is essential for efficient development and debugging. One technique commonly employed is using Guard, inspired by the Ruby gem of the same name. However, it can encounter issues with sending the server to the background.

An alternative approach that overcomes this limitation and provides cross-platform compatibility for both GNU/Linux and Mac is Nodemon. With Nodemon installed globally using npm, you can navigate to the code directory and execute the following command:

nodemon --watch './**/*.go' --signal SIGTERM --exec 'go' run cmd/MyProgram/main.go

This command accomplishes several things:

1. Watches for file changes: Nodemon monitors all .go files in the current directory and its subdirectories. When any of these files change, it triggers the rebuilding process.
2. Sends a SIGTERM signal: When a file change is detected, Nodemon sends a SIGTERM signal to the currently running Go server. This terminates the server cleanly.
3. Rebuilds and restarts the server: After receiving the SIGTERM signal, Nodemon compiles the Go code using 'go' run cmd/MyProgram/main.go and restarts the server.

By leveraging Nodemon's real-time file monitoring and signal handling capabilities, this solution provides a reliable and cross-platform way to auto-recompile and reload your Go server, making development and debugging more efficient.

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