Newsletter • October 2025

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newsletter

  • Getting AI to Work in Complex Codebases - The article presents advanced context engineering as the key to making AI productive in large, real-world codebases. Through strategies like frequent intentional compaction and spec-driven development, teams can guide coding agents to deliver high-quality code, maintain alignment, and tackle difficult bugs or features. Human workflow and context curation are essential for scalable AI-augmented engineering.

  • Behind The Scenes of Bun Install - This technical deep dive explains how Bun Install improves package installation speed by rethinking core processes. Bun achieves installations roughly 17 times faster than existing solutions, showing how a systems mindset drives major efficiency gains in developer tooling. How ? They minimize syscalls, introduce fast binary caching, and parallelize operations.

  • Why our website looks like an operating system - I really like the new PostHog website design. Discover why and how they did it.

  • Keeping Secrets Out of Logs - There is always a risk of confidential data leaking into application logs. Discover a layered, defense-in-depth approach: combining strict configuration, careful code hygiene, proactive monitoring, and targeted filtering to systematically reduce the exposure of secrets. There is not a single technique to fully protect sensitive data, but we can combine them for a better result.

  • The Fastest Site in the Tour de France - It compares the websites of the different bikes manufacturers of the 2025 Tour de France to find out if “bike brand’s focus on web performance predict their performance on race day?”

News

Vrac

History

Code

Javascript ecosystem

Docker

Hacks, Hardware & other ideas

Build

Database

Books

  • On rereading books - “How arrogant would you have to be to think you’ve gained everything from a book on your first reading?”
  • The Making of a Manager: What to Do When Everyone Looks to You - Second edition
  • Elegant Objects - “23 independent recommendations for a practical OOP designer on how to make code cleaner, classes more solid, and architecture more visible.”
  • Elements of code - “a series of rules for writing software that future readers will understand”
  • Architecture for Flow is coming soon. - “a holistic approach that integrates business strategy, software design and architecture, and team organization to create adaptive, socio-technical systems optimized for continuous change and feedback.”
  • Team topologies second edition

AI

Build AI

Use AI

Design

Tools

  • Termix - Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities.
  • tlrc - A tldr client, learn about a command in a tlrd format
  • Jimmy - Convert your notes to Markdown

Security

Supply chain attack are on the rise, with news every week. Be careful !

A small list of recent attacks reports:

Startup / industry

By Octo