advanced topicsSep 13, 2026
Reuse http.Transport in Go: Connection Pools, Idle Limits, and Safe Customization
Creating a new http.Transport per request throws away Go's connection pool. A look at pooling, idle limits, and why you have to drain response bodies.
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advanced topicsSep 12, 2026
Atomic Operations in Go: When a Mutex Is Still Clearer
How to use Go atomic counters, booleans, and atomic.Pointer safely, plus the cases where sync.Mutex is the clearer and more verifiable choice.
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debuggingSep 11, 2026
Goroutine Leak Profiles in Go 1.27: Finding Permanently Blocked Goroutines
Go 1.27 makes the goroutineleak pprof profile generally available for finding goroutines permanently blocked on channels and sync primitives. Here's how its GC-based detection works and where it stops.
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advanced topicsSep 10, 2026
Querying the pkg.go.dev API from Go: A Typed Client Walkthrough
pkg.go.dev finally serves JSON. Here's a typed Go client for it, plus the two API design decisions that break naive implementations.
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advanced topicsSep 9, 2026
Go Error Chains: How errors.Is, errors.As, and errors.Join Actually Work
Go's wrapping contract is three lines of documentation. Here's what falls out of it: sentinel matching, typed extraction, and the multi-error trees errors.Join builds.
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advanced topicsSep 8, 2026
Worker Pools in Go: Bounded Concurrency Without Goroutine Leaks
A Go worker pool that cancels cleanly, pushes back on the producer, and gets its errors out. Plus how to write a test that proves it didn't leak.
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