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Zeroboot

sub-millisecond VM sandboxes using CoW memory forking

Details

External ID
47412812
Source
HN
Company
—
Product
Zerobox
Website domain
github.com
Launched
March 17, 2026
Cohort
—
Upvotes
20
Upvotes percentile
0.7423124231242313
Tags
—
Fetched at
Sept. 7, 2026, 9:26 p.m.
Updated at
Sept. 7, 2026, 9:26 p.m.

Enrichment

Theme
systems tools and desktop utilities
Vertical
Horizontal
Function
Hardware & robotics
Audience
Developer
AI stance
Not AI
Project type
Commercial product
Normalized one-liner
sub-millisecond vm sandboxes using cow memory
Manually corrected
False

Could you build this?

No Sub-millisecond VM booting via copy-on-write memory forking requires low-level hypervisor programming, Linux kernel virtualization (KVM) internals, and memory management tricks.

What it would actually take: The architecture requires direct interaction with the Linux `/dev/kvm` API, userfaultfd/copy-on-write memory page cloning, and snapshot restoration of CPU registers and guest physical memory. It requires deep systems programming (in C, Rust, or Go) and kernel-level knowledge of memory pagetables and virtualization extensions (VT-x/AMD-V) to bypass Firecracker's full boot cycle.

Discussion

4 comments analyzed.

Competitors mentioned: CRIU

Feature requests: Multi-region support, Custom templates with user dependencies

Competitors

Other products that read as similar to this one — 1668 launches clear the similarity bar, closest 8 shown.

Attention rank: #453 of 1669 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 137 days after the earliest competitor.

Other launches for this product

Same idea, different domain

Nobody's really built a hardware & robotics tool for Fintech yet.