Benjamin Cane • 5/15/2026

Weighted load balancing has saved me more times than I can count

This article discusses weighted load balancing, a feature often overlooked in standard load balancers. It explains how weights allow gradual traffic shifting, enabling safer migrations, canary deployments, and blue/green releases. The author shares personal experiences using weighted routing over a decade for legacy platform migrations, card payment system transitions, and service mesh canary deployments. The article emphasizes that understanding traffic control through weighting is a critical skill for software engineers, as it reduces risk and improves change management in production environments.

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#Haproxy #Load Balancing #Traffic Management