How Can I Auto-Recompile and Reload My Go Server on File Changes?

Auto-Recompiling and Reloading Go Servers on File Changes

Developers often encounter the need to automatically recompile and reload their Go servers whenever changes are made to the codebase. This ensures that the latest code is always running without manual intervention.

One attempt to address this problem involved using the Guard tool from the Ruby ecosystem to monitor changes in .go files. However, issues arose as the tool failed to properly send the foo process to the background and instead caused an indefinite hang.

A Cross-Platform Solution Using Nodemon

An alternative solution that is cross-platform compatible with GNU/Linux and Mac is to utilize Nodemon. This tool provides automatic file change detection and a configurable command execution mechanism.

To implement this solution:

1. Install Nodemon globally using npm i -g nodemon.
2. Navigate to the code directory and run the following command:

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

Explanation:

• --watch './**/*.go': Specifies to monitor all .go files recursively in the current directory and subdirectories.
• --signal SIGTERM: Instructs Nodemon to send a SIGTERM signal to the running process whenever a change is detected.
• --exec 'go' run cmd/MyProgram/main.go: Defines the command that will be executed after receiving the SIGTERM signal.

This script will now automatically recompile and reload your Go server whenever any .go file is modified, providing a seamless and efficient development workflow.

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