This section is the map for the rest of the book. The five stages introduced in the 1.1 chapter overview (parse, analyze/rewrite, plan, portal, execute) are traced here through the actual code: which functions implement each stage, and in what order they get called. The mechanics of each of the five stages are unpacked in later chapters. Here, only the skeleton matters: how a backend starts up, ho
PostgreSQL Internals · Chapter 1 Query Processing Suppose a client sends SELECT * FROM users WHERE id = 1. The path that single line travels before coming back as a result row is longer than you might expect. Inside the PostgreSQL backend, that SQL goes through a five-stage pipeline. Backend entry and dispatch. The backend receives the message from the client and decides which processing path it s
ZopNight v2.0: The Control Layer Your Cloud Bill Has Been Missing We've been watching cloud bills grow for years. Dashboards got prettier. Alerts got louder. The bills kept climbing. ZopNight v2.0 is our answer to why: the problem was never visibility. It was control. This release ships the full four-layer stack we believe every multi-cloud team needs: discovery with 14-day metrics, policy that