Go Backend Development

Go is small on purpose. The language has fewer features than its peers, and that's the point: less surface area, more uniformity, code that an unfamiliar reader can pick up quickly. Working with Go's grain — not against it, not pretending it's Java or Rust — is the difference between a maintainable service and a fight.

The orienting principles, repeated by long-time Go developers until they sound trite (because they're true):

• Clear is better than clever.
• Errors are values. Handle them.
• Don't communicate by sharing memory; share memory by communicating. (And actually, when in doubt, just use a mutex — channels aren't always the answer.)
• A little copying is better than a little dependency.
• Accept interfaces, return concrete types.

Project layout

For a typical service, this works: