advanced topicsAug 7, 2026
The nil interface trap in Go will bite you eventually
A Go interface holding a typed nil pointer isn't nil. Here's how that breaks error handling and what to do about it.
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advanced topicsJul 31, 2026
CVE-2019-17596: How a Malformed Certificate Could Crash Your Go Program
A malformed DSA public key could make Go's signature verification panic. Here's where the bug appeared, how Go fixed it, and what to check.
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advanced topicsJul 27, 2026
How database/sql manages your connection pool (and how to tune it)
How Go's database/sql connection pool works, what its settings control, and how to tune it from production data.
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best practisesJul 22, 2026
The default Go HTTP client can wait forever. Here's how to fix it.
Go's default HTTP client has no overall request timeout. Learn how client, context, and transport timeouts work together without breaking long-running responses.
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debuggingJul 20, 2026
How to profile Go programs with pprof
Learn how to capture and read CPU, memory, goroutine, block, and mutex profiles with net/http/pprof and go tool pprof.
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advanced topicsJul 17, 2026
Mutexes in Go: when to use sync.Mutex vs sync.RWMutex
When to reach for sync.Mutex, sync.RWMutex, atomics, or channels in Go, plus the pitfalls that trip up experienced developers.
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