From Helpers to Middleware
summary
Tracks concrete evolution: claim that old helpers and service-locators get replaced by composable middleware wired at bootstrap, using PSR-7 request/response values and PSR-style containers to avoid framework lock-in; shows actual code shapes (constructor injection, request→response actions), cites Symfony 2 era then middleware/PSR era, reports fewer upgrade rewrites, pushes immutability, static analysis and functional piping, and demonstrates replacing ORMs with event-sourced history stored as append-only events so business logic tests in isolation.
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chapters (15)
- 0:00Intro
- 1:00Business logic
- 4:43Web project
- 7:07Frameworks
- 8:03MVC
- 8:53Controller
- 10:51CSRF
- 13:10Registry
- 19:02DDD
- 19:56Middleware
- 28:03Static coupling
- 29:08Immutability
- 32:15Functional Programming
- 34:43Event Sourcing
- 38:08Functional Composition
