📚 New: Apache Cloudberry Core Internals is live! A deep-dive handbook on how Cloudberry works inside: https://cloudberry.apache.org/core-internals/ What’s inside (21 chapters): • The big picture: MPP architecture, QD/QE, dispatch, gangs and slices • Storage: heap, AO/AOCS, PAX, buffer cache, indexes, catalog • Transactions: MVCC, vacuum, global deadlock detector, distributed 2PC • Query processing: planner, ORCA, executor, Motion and interconnect • HA and recovery (WAL, replication, FTS), plus resource groups Huge thanks to @Max Yang for writing and contributing it! 🙏 If you’re new to the codebase, Chapter 1 has a module map that’s a great place to start. Feedback and fixes are welcome as PRs to https://github.com/apache/cloudberry/tree/main/doc/core-internals |

doc/core-internals

in the main repo.