pglockanalyze - See the locks your Postgres migrations will acquire
Hello! I created this tool to make reasoning about Postgres locks a bit easier. Given a database[1] and a set of DDL statements/migrations you want to check, pglockanalyze will open a transaction, execute the statements, read the pg_locks view to analyze the locks they acquire and rollback (or commit, depending on the flags you passed) the transaction. Then, it will output the results for each statement. I think there's merit in this idea, that said it's very much an experiment so there could be flaws and/or corner cases that this strategy won't work well for. It's meant to act as…
pglockanalyze - See the locks your Postgres migrations will acquire launched on May 31, 2025 with 8 votes, #2,977 of 7,905 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
See what PostgreSQL locks your migrations acquired - agis/pglockanalyze
See what locks your Postgres migrations will acquire—before you run them in production. To be used in CI and development environments; see pglockanalyze-action for integration with GitHub Actions. This software is in alpha stage - expect breaking changes between releases and a lot of rough edges. Understanding the locks your migrations will acquire is crucial to avoiding downtime in production traffic. Tools like the official Postgres docs and strong_migrations are invaluable; however, reasoning your way through complex DDL statements is not always practical. pglockanalyze is meant to complement, not replace such tools, by executing your migrations against a test database (that you have to…from github.com
In the maker’s words, at launch
Hello! I created this tool to make reasoning about Postgres locks a bit easier. Given a database[1] and a set of DDL statements/migrations you want to check, pglockanalyze will open a transaction, execute the statements, read the pg_locks view to analyze the locks they acquire and rollback (or commit, depending…
Does a similar job
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Postgres query lock explainer2023 · github.com · ▲143This is like 4 years old, but I’m braver now and ready to share stuff with this community. I’ve been a lurker for a while. I made this tool - it’s kind of like “explain” but it tells you about what locks would be required by the query. I was making it as part of a larger tool that would try to prevent deadlocks during migrations at my last company, I never finished it.
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