TODO

Postgres Hacking TODO List
==========================
Last updated: 2026-07-16

This file is the list.  When an item is finished, remove it.  Add links
under the item when there is a patch, discussion, or useful background.


Observability
=============

* Finish precise wait-event timing and tracing

	o Publish reproducible observer-effect benchmarks
	o Close instrumentation coverage gaps
	o Address CommitFest review

	https://github.com/DmitryNFomin/postgres/pull/2
	https://commitfest.postgresql.org/patch/6984/
	https://nikolays.github.io/wet-timing-bench-brief/


Recovery and replication
========================

* Submit corrected recovery landmarks for destructive DDL

	o Finish review
	o Send a new patch version to pgsql-hackers
	o Update the CommitFest entry

	https://github.com/NikolayS/postgres/pull/55
	https://commitfest.postgresql.org/patch/6272/

* Complete archive-fed logical-decoding test coverage

	o Test crash and restart paths
	o Test promotion and rewind paths
	o Prepare the pgsql-hackers submission

	https://github.com/NikolayS/postgres/pull/40


SQL and storage
===============

* Review partial materialized-view refresh

	https://commitfest.postgresql.org/patch/6305/

* Decide whether to continue whole-WAL-record compression

	o Confirm the author's intent
	o Rebase the series
	o Produce current benchmarks

	https://commitfest.postgresql.org/patch/5621/

* Resolve custom command-tag protocol design

	o Resolve capability-negotiation questions
	o Decide whether to submit it to CommitFest

	https://github.com/NikolayS/postgres/pull/16

* Scope a reviewable B-tree bloat-removal patch

	o Define invariants and locking
	o Build a minimal correctness test suite

	https://wiki.postgresql.org/wiki/GSoC_2026#B-tree_Index_Bloat_Reduction_(Page_Merge)


Sessions and site
=================

* Recover topics and links for generic-title sessions
* Point hacking.postgres.tv to GitHub Pages
* Add the AI assistant when there is a concrete design worth shipping