Airbnb's sitar-agent is a Kubernetes sidecar that delivers dynamic configuration to service instances reliably and at scale.
- •Configuration flows from Git/Portal through Sitar Service to S3 snapshots, which are preloaded when pods start
- •The sidecar continuously polls the Sitar Service every 10 seconds to fetch updates and maintains a local filesystem cache
- •Redesigned from Ruby to Java with snapshot-based S3 preload to reduce cold start time and improve resilience
- •Implemented as isolated sidecar container to support multiple languages (Java, Python, Go, TypeScript, Ruby) without code duplication
- •Pull-based architecture uses server-side cache (10s TTL) and token-based delta scanning to minimize server load
This summary was automatically generated by AI based on the original article and may not be fully accurate.
Airbnb
Spotify
Netflix
Hugging Face
Databricks