EterDB, a Postgres fork that makes it easy to recover from incidents
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Hey everyone, a few months ago, after recovering from a Clade-generated bug, I was thinking to myself “wouldn’t it be nice if prod DB writes were easy to roll back”. I’ve put something together: it’s a two-container deploy plus a CLI tool. It’s far from being production ready, so please be gentle. All feedback welcome!The nitty gritty: https://eterdb.com/techGitHub: https://github.com/eterdb/eterdb
HN · launched Sep 10, 2026 · 45 upvotes (top 16%) · 0 views
Niche: database management systems and engines · 162 launches, 5 in the last 7 days ▼ -17% · Explore this niche →
Category and tags
- Horizontal
- Data infrastructure
- Developer
- Not AI
- Commercial product
Visit website ↗ Source listing ↗
More like this: all 162 launches in database management systems and engines →
Could you build this?
No Forking PostgreSQL 18 to implement transaction-level undo, read-dependency tracking, and granular time-travel write recovery requires deep database internals and C engine expertise.
What it would actually take: Requires modifying PostgreSQL core source code (in C) to alter the WAL (Write-Ahead Log), tuple visibility routines (MVCC/vacuuming), and implementing transaction dependency graphs by intercepting read/write locks. The system must reconstruct row histories, compute cascading dependencies across foreign keys and read sets, and handle schema changes without full-database replay. This requires world-class database systems engineers and distributed systems researchers.
Discussion
2 comments analyzed.
Competitors mentioned: pgBarman
Concerns raised: PITR lacks surgical precision for undoing specific transactions
Competitors
Other products that read as similar to this one : 207 launches clear the similarity bar, closest 8 shown.
Attention rank: #39 of 208 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 315 days after the earliest competitor.
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- harbor-db · github · 2026-09-14 · 7 upvotes · similarity 0.43
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