Chapter 9: Advanced Continuous Delivery

1. Database schema migration is a process of incremental changes to the relational database structure.
2. Flyway, Liquibase, Rail migrations (from Ruby on Rails), Redgate, Optima database administrator.
3. Backward-compatible and non-backward-compatible.
4. If one database is shared between multiple services, then each database change must be compatible with all services, which makes changes very difficult to initiate.
5. Unit tests do not require the preparation of any special data; data is in memory and prepared by developers; integration/acceptance tests require the preparation of special data that is similar to production data.
6. Parallel.
7. Build parameters and shared libraries.
8. Input.
9. Rolling updates, blue-green deployment, and canary release.