Go channels look simple, but they rely on heap-allocated ring buffers and runtime scheduler parks. Learn how the hchan structure, stack-to-stack copies, and lock ordering work to prevent leaks and panics.

Building a thread-safe inverted index from scratch in Go. Covers sharded mutexes, lock contention profiling, slice pooling to avoid GC pressure, and benchmark comparisons against a naive sync.RWMutex approach under varying read/write ratios.

Unbounded concurrency is a reliability nightmare. Learn how to protect your system from OOM kills and database exhaustion by implementing Semaphores and Worker Pools in Go.