Goroutines, channels, context cancellation how these patterns show up when building RAG and LLM pipelines in Go.

I considered event sourcing for SlotTurf's payment flow. Here's why I didn't use it.

Index strategies, query optimization, and EXPLAIN ANALYZE patterns. Study notes, not a production war story.

Core concepts for designing scalable distributed systems load balancing, caching, database sharding, and message queues.