#dependency-injection

#dependency-injection

What's happening here: Type-safe - Your editor knows repo is a SnippetRepository. Full autocomplete, type checking works. Automatic cleanup - The context manager ensures the database session closes, even if an exception occurs. No global state - Every request gets its own session. No risk of one request interfering with another. Testable - Here's the magic: You override the dependency with an in-memory implementation. Your test doesn't hit the database.

Angular is a cohesive, all-in-one reactive framework for web development. It is one of the larger reactive frameworks, focused on being a single architectural system that handles all your web development needs under one idiom. While Angular was long criticized for being heavyweight as compared to React, many of those issues were addressed in Angular 19. Modern Angular is built around the Signals API and minimal formality, while still delivering a one-stop-shop that includes dependency injection and integrated routing.

Coupled code refers to a situation where changes in one module directly affect another, causing unexpected consequences or bugs, making maintenance difficult.

Ktor 3.2.0 introduces a dependency injection module that enhances functionality for users, with concurrent application initialization via coroutines and integration with existing frameworks.