MakAir Series: The Inception of an Open-Source Ventilator Project

This is the first article of a series on the MakAir open-source ventilator, a project that I founded with friends, which was born at the beginning of the Covid-19 pandemic in early 2020. Think of this series of articles as a ledger of all that happened and all that was »

3D Printing: My DIY Formlabs Enclosure Project

When the Formlabs Form 3 was released back in late 2019, I jumped on to ordering it and trying it out, with a future hardware project in mind. I was new to SLA (Stereolithography), coming from the world of FFF/FDM (Fused Filament Fabrication) with my MakerBot Method. Unfortunately, I »

Announcing Sonic: A Super-Light Alternative to Elasticsearch

When one builds a product, a good measure of success would not be how much time users spend on the product, but how much time users save by using it. Let search be at the core of any product for that purpose. Three years ago, I started Crisp with Baptiste »

The Crisp Raison d'Être & Master Plan

Background: I’m Valerian Saliou, CTO and co-founder at Crisp, the Customer Support platform for everyone. My day job consists of designing & building Crisp products, and maintaining the infrastructure that makes everything run. I have tens of other project ideas, some of which are planned to be started at »

Announcing Vigil: How We Monitor Crisp at Scale

This article is a repost of the original article: Ditch your Status Page: How we monitor Crisp at scale on Crisp blog. The Crisp technical architecture runs around 40+ different micro-services, all replicated across different physical machines. Adding to that, we have around 20 daemons operating different tasks, eg. data »

Announcing Bloom: A REST API Caching Middleware

Premature optimization is the root of all evil. Especially when you launch a new SaaS business you're not sure will succeed and get the traction you would expect of it. But, if success happens, you end up needing to optimize quite a lot of stuff. Two years ago, Baptiste Jamin »

Announcing Providence: A Spam Filter For XMPP

Fighting spam on decentralized & federated messaging networks (ie. XMPP) is "essentially war with a multi-headed hydra, when 3 new heads are instantly grown up when you cut off just one." — A. on the XSF mailing lists.⚠️ Unfortunately, I had to cancel this project due to a lack of time, »