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You deploy to all instances simultaneously. A bug affects 5% of requests. Before you can react, 100% of users are hitting it. Canary deployments let you catch that bug when it''s hitting 1% of traffic, not 100%.
Compare blue/green, canary, rolling updates, and shadow traffic. Implement with Argo Rollouts and decide which strategy fits your risk tolerance.
Your system handles 1,000 users today. You''re designing for 10,000. Not 10 million — 10,000. Most "design for scale" advice is written for companies you''re not. What actually changes at 10x, and what''s over-engineering that will hurt more than help?
AI tools claim 10x productivity gains. What actually works and where it''s slower? Data from real teams.
Master Redis locks, Redlock algorithm, fencing tokens, and database advisory locks. Learn when distributed locks solve real problems.