# The Zen of Go

By [Mark Stabbot](https://paragraph.com/@mark-stabbot) · 2023-03-30

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Each package fulfils a single purpose

*   Handle errors explicitly
    
*   Return early rather than nesting deeply
    
*   Leave concurrency to the caller
    
*   Before you launch a goroutine, know when it will stop
    
*   Avoid package level state
    
*   Simplicity matters
    
*   Write tests to lock in the behaviour of your package’s API If you think it’s slow, first prove it with a benchmark
    
*   Moderation is a virtue
    
*   Maintainability counts

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*Originally published on [Mark Stabbot](https://paragraph.com/@mark-stabbot/the-zen-of-go)*