Deployment Strategies

Microservices let teams deploy services independently, often many times a day. That only works if releases are safe, cheap, and easy to undo.

A deployment strategy defines how to ship a new version while serving live traffic, avoiding downtime, limiting the blast radius, and rolling back quickly when something breaks.

This chapter covers rolling, blue-green, and canary deployments, feature flags, rollback strategies, and the three core goals: no downtime, limited impact, and fast recovery.