What is Dependency Injection?
A technique where a component receives its dependencies from the outside rather than creating them itself.
Why It Matters
Dependency injection makes code easier to test and more flexible because you can swap components without changing the code that uses them.
Real-World Example
A payment service receives its payment gateway as a parameter, so you can easily swap Stripe for PayPal.
“Understanding terms like Dependency Injection matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
Related Terms
SOLID Principles
Five design principles that help developers write code that is easier to maintain, extend, and understand.
Inversion of Control
A design principle where a framework calls your code rather than your code calling the framework.
Design Patterns
Reusable solutions to common software design problems that have been proven to work well.
Unit Test
A test that checks if a small piece of code works correctly in isolation
Learn More at buildDay Melbourne
Want to understand these concepts hands-on? Join our one-day workshop and build a real web application from scratch.
Related Terms
Unit Test
A test that checks if a small piece of code works correctly in isolation
Design Patterns
Reusable solutions to common software design problems that have been proven to work well.
SOLID Principles
Five design principles that help developers write code that is easier to maintain, extend, and understand.
Inversion of Control
A design principle where a framework calls your code rather than your code calling the framework.
Microservices
An architecture where an application is built as many small, independent services that work together
Monolith
An application where all features are built and deployed as a single unit