First screen, captured 2 days ago. Hover to scroll the page, or open the video.

Jepsen: ParticleDB 1.1.4

What HN thinks

A Jepsen report where WHERE 4 = 5 returns a row, and the comment section returns no mercy.

Vibe-coded, untrustworthy, unsalvageable
Most commenters see the 96 basic bugs, fake TLA+ proof claim and inflated marketing as signs of an LLM-driven project with no real QA, and say they'd never use it or the company's products.
Claimed fixes aren't credible
Replies to ParticleDB team members argue that saying everything is fixed proves nothing, given they previously claimed to have run Jepsen and SQLancer; only a new independent test would count.
Jepsen's blunt commentary is warranted
A minority disliked the editorializing about development methodology, but others said such candor is a duty to users when a vendor misrepresents production readiness.

Consensus: Nearly everyone agrees ParticleDB should never have been put up for a Jepsen test in this state and that its marketing claims were unjustified; Aphyr's work is widely praised.

Recommended in the comments

Jepsen ↗ (service): Commenters say every database vendor should get Jepsen-tested and praise its clear reports.
SQLancer (tool): Cited as a testing tool that should have caught basic query bugs.
TigerBeetle (product): Pointed to as a contrasting database that fared well in its Jepsen analysis.

Summarised by Claude from the comment thread 1 day ago.

Points: 300
Comments: 167
Best rank: #4
Posted: 2026-10-31 by aphyr
Category: Data databases

jepsen particledb database-testing transaction-isolation acid distributed-systems rust

All captures:

Full page

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