Make every bug perfectly reproducible
Details
- External ID
- 48607073
- Source
- HN
- Company
- —
- Product
- Make every bug perfectly reproducible
- Website domain
- workers.io
- Launched
- June 20, 2026
- Cohort
- —
- Upvotes
- 13
- Upvotes percentile
- 0.6707650273224044
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Description
We are building a VM that helps you simulate realistic production conditions, model latencies, different interleaving, user requests, and find bugs.Every non-deterministic property is turned into a knob you or a coding agent can control. We have helped teams perfectly reproduce support incidents and found bugs in some of the world's most well tested software (including a database).
Enrichment
- Theme
- AI agent frameworks and developer tools
- Vertical
- —
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- bug reproduction tool for developers
- Manually corrected
- False
Could you build this?
No Building a deterministic hypervisor or virtual machine that captures, replays, and controls every source of non-determinism (thread interleavings, memory access, syscalls, clock interrupts) is deep systems engineering research on par with Antithesis or rr.
What it would actually take: This requires hypervisor-level virtualization or kernel-level tracing (e.g., modified QEMU/KVM, eBPF, or ptrace-based record-replay engines like rr). The core challenge is eliminating non-determinism across multi-core execution, memory fences, asynchronous I/O, and CPU timer interrupts while maintaining reasonable performance overhead. Developing this requires world-class systems software engineers, deep low-level OS kernel knowledge, and specialized formal verification expertise.
Discussion
2 comments analyzed.
Concerns raised: Documentation and homepage are rushed and unclear, Unclear how to get started - what's the actual setup process, Homepage doesn't clearly explain whether library integration or OpenTelemetry instrumentation is needed, Ambiguous about data sources - unclear if it reads logs or requires other inputs
Feature requests: Clearer quickstart guide with concrete setup instructions, Better homepage explaining prerequisites and integration methods
Competitors
Other products that read as similar to this one — 61 launches clear the similarity bar, closest 8 shown.
Attention rank: #31 of 62 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 231 days after the earliest competitor.
- FixBugs · hn · 2026-07-13 · 43 upvotes · similarity 0.55
- ToolStorm · ph · 2026-09-24 · 1 upvotes · similarity 0.42
- AxonFlow, governing LLM and agent workflows · hn · 2026-01-20 · 11 upvotes · similarity 0.42
- Agent Rehearsal · ph · 2026-09-26 · 1 upvotes · similarity 0.41
- Buggo · github · 2026-09-22 · 13 upvotes · similarity 0.39
- Replay QA · ph · 2026-07-20 · 415 upvotes · similarity 0.39
- Detail, a Bug Finder · hn · 2025-12-09 · 67 upvotes · similarity 0.38
- Pure Effect · hn · 2026-06-21 · 58 upvotes · similarity 0.37
Other launches for this product
- No other launches for this product.