Dependency Injection in Spring Boot or .NET | Dataford Interview Questions

How do you implement and configure dependency injection in a large-scale Spring Boot or .NET application?

Implement the dependency-resolution core as a function. Given service registrations and a root service, return each required service in dependency-first order, or return an empty list when a dependency is missing or a circular dependency exists.

Each registration contains a list of dependency names and a lifetime value, either singleton or transient; lifetime is configuration metadata and does not change ordering. The input and output shapes are defined below.

Constraints

1 <= number of registrations <= 1000
Each service name is a non-empty string
Each dependency name is a non-empty string
A service may list a dependency at most once
lifetime is either singleton or transient
Return [] for a missing target, missing dependency, or circular dependency

Function Signature

def build_resolution_plan(registrations, target):

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Problem

How do you implement and configure dependency injection in a large-scale Spring Boot or .NET application?

Constraints

1 <= number of registrations <= 1000
Each service name is a non-empty string
Each dependency name is a non-empty string
A service may list a dependency at most once
lifetime is either singleton or transient
Return [] for a missing target, missing dependency, or circular dependency

Function Signature

def build_resolution_plan(registrations, target):

Your question is Dependency Injection in Spring Boot or .NET. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.