Go Routing Tutorial Part 2: Adding Auth, Timeouts, and Tests to a Payment API

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A DEV Community tutorial series on building a payment links API in Go has released its second installment, focusing on improvements developers typically defer after launch. Part 2 introduces a dedicated service layer to separate business logic from HTTP handlers, along with API key-based authentication middleware. The guide also adds request-scoped timeouts to prevent slow operations from hanging the server indefinitely. Proper handler tests are implemented using Go's built-in httptest package, keeping the codebase small but with clearly separated responsibilities. The tutorial emphasizes writing compilable, dependency-free code organized across structured internal packages.

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ProgrammingDEV Community ·

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