Great breakdown! I really liked how you organized PostgreSQL into layers instead of treating it as a black box. It makes it much easier to understand where performance bottlenecks or debugging challenges actually come from. The progression from SQL to planner, executor, and storage internals is a solid mental model that every backend engineer should build over time. Looking forward to more deep dives like this especially around MVCC, WAL, and the query planner.
SI
Sanoary Istiaque
Exploring how chatbots and AI automation make business simpler, faster, and more efficient.
Great breakdown! I really liked how you organized PostgreSQL into layers instead of treating it as a black box. It makes it much easier to understand where performance bottlenecks or debugging challenges actually come from. The progression from SQL to planner, executor, and storage internals is a solid mental model that every backend engineer should build over time. Looking forward to more deep dives like this especially around MVCC, WAL, and the query planner.