Safer DB Migrations with Excellent_migrations

Discover how to prevent production downtime caused by unsafe database migrations in this 30-minute conference talk from ElixirConf EU 2023. Learn about the open-source library 'excellent_migrations', a static analysis tool that automatically detects potentially dangerous or destructive operations in migration files. Explore common pitfalls in database schema changes, such as forgetting to add indexes concurrently to large tables. Gain insights into how the tool works by traversing the Abstract Syntax Tree (AST) of migration files and understand its mechanism for silencing certain checks when necessary. Delve into the importance of safe database operations and the benefits of contributing to open-source projects in the Elixir ecosystem.