Quick study sessions to strengthen memory and retain key concepts.
When does dependency injection need a refactor?
When the rule is no longer easy to explain, test, or change without surprising nearby code. Refactoring is…
View Card →What production lens matters for dependency injection?
Assume the simple demo is not enough. Real data volume, partner behavior, and partial failures will pressure the…
View Card →What review lens should you apply to dependency injection code?
Ask whether the next engineer can see the rule, the data shape, and the likely failure mode quickly.…
View Card →What testing lens fits dependency injection?
Test the boundary cases and invariants that would silently break if the rule were misunderstood. Good tests preserve…
View Card →What debugging lens helps most with dependency injection?
Trace one real example, inspect the state changes, and compare them to the rule you intended to implement.…
View Card →Why does OrderOps care about dependency injection?
Because OrderOps is graduating from internal scripts to a small service that other tools and dashboards can call…
View Card →What is the best default for dependency injection?
Choose the simplest shape that keeps the rule explicit, testable, and easy for the next engineer to read.…
View Card →How should you explain dependency injection in an interview?
Inject repositories and services at boundary seams so tests and reasoning stay local and explicit. Candidates who speak…
View Card →What is the main pitfall around dependency injection?
Global hidden dependencies make route behavior harder to predict and harder to override in tests. Naming the pitfall…
View Card →What is the core rule behind dependency injection?
Inject repositories and services at boundary seams so tests and reasoning stay local and explicit. This matters because…
View Card →