11 engineers on Hacker News describe using Firecracker first-hand: 3 endorse it, 0 regret it, 0 are mixed.
“I've deploy gvisor, done basic test of firecracker... Firecracker and gvisor are nice systems not horrible to use”
endorse · personal · johnsmith1840 · 2026-10-05 · source ↗ · wrong label?“Our solution is based on Firecracker, which enables us to pause (& clone) a VM at any point in time and resume it later”
endorse · production · CompuIves · 2023-10-19 · source ↗ · wrong label?“we run Firecrackers on our own physical servers and performance is quite good (even network + disk performance).”
endorse · production · mrkurt · 2020-10-22 · source ↗ · wrong label?“we moved to a fully in-house solution with Firecracker and auto-scaling on EC2”
neutral · production · Reformedot · 2026-06-17 · source ↗ · wrong label?“Each tool execution spins a microVM (1 vCPU, 512MB), and the runner communicates with a statically-linked guest agent over AF_VSOCK”
neutral · production · chrismeurer · 2026-03-23 · source ↗ · wrong label?“We've created a Firecracker-based runner, which will run CI jobs in Firecracker VMs.”
neutral · production · adamcharnock · 2026-02-09 · source ↗ · wrong label?“Our underlying VMM is very similar to firecracker (same upstream source).”
neutral · production · crawshaw · 2025-12-27 · source ↗ · wrong label?“We run you GitHub Actions on consumer grade desktop CPUs with high single core performance, all inside ephemeral Firecracker VMs.”
neutral · production · aayushshah15 · 2024-09-02 · source ↗ · wrong label?“We migrated to a fork of firecracker, but we're a fully hosted product that doesn't directly interact with GHA at all”
neutral · production · colinchartier · 2022-11-18 · source ↗ · wrong label?“More info on how we use it on AWS Firecracker is available on our blog post”
neutral · production · _ananos_ · 2020-12-04 · source ↗ · wrong label?“Mission critical systems like our registry, api, redis servers, and much more are all running as fly apps in firecracker.”
neutral · production · michaeldwan · 2020-10-22 · source ↗ · wrong label?