Airbnb Technology Team

Aug 20, 2026 · Cloud Native

How Airbnb Built a Scalable, Reliable Kubernetes Sidecar for Dynamic Configuration

The article explains Airbnb's Sitar‑agent sidecar architecture, detailing the end‑to‑end configuration distribution lifecycle, key design choices such as sidecar versus in‑process deployment, pull‑model optimizations, and the migration from Sparkey to SQLite for robust, multi‑language support at massive scale.