Implementing least-connections load balancing with slow-start in Go

Short summary

A walkthrough of replacing naive round-robin load balancing with a least-connections algorithm that routes requests to the backend with the fewest active connections. The author explains how this approach handles traffic bursts, heterogeneous environments, and new-node cold starts via a slow-start window. A minimal Go implementation is provided comparing round-robin and least-connections strategies.

• •Least-connections routing sends requests to the backend with fewest active connections
• •Slow-start period prevents overwhelming newly added cold nodes
• •Go implementation provided comparing round-robin vs least-connections approaches

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