How to safely run database migrations without downtime: expand-contract pattern, feature flags for migrations, backfill strategies, reversible migrations, and handling large tables (100M+ rows).
Step-by-step guide to performing schema migrations in PostgreSQL without any downtime. Cover ALTER TABLE tricks, CREATE INDEX CONCURRENTLY, adding columns with defaults, renaming via views, and real-world migration scripts.
People have become addicted to their mobile devices. NYU professor Adam Alter says it’s by design -- and offers some ideas on how to break the habit.…Read More