Blog Index (A–Z)

Code refactoring is the process of restructuring existing computer code without changing its external behavior. The main purpose is to improve the internal structure of the code—making it…

A code review is the process of systematically examining source code written by a developer to identify mistakes, improve quality, and ensure adherence to coding standards. It is…

Contact testing is a software testing approach where different components, services, or systems that “contact” each other are tested to ensure they communicate correctly. It focuses on the…

Foreign Function Interfaces (FFIs) let code written in one language call functions or use data structures written in another. In practice, FFIs are the “bridges” that let high-level…

Inversion of Control (IoC) is a design principle in software engineering that shifts the responsibility of controlling the flow of a program from the developer’s custom code to…

The Outbox Pattern is a design pattern commonly used in distributed systems and microservices to ensure reliable message delivery. It addresses the problem of data consistency when a…

Regression testing is a type of software testing that ensures recent code changes, bug fixes, or new features do not negatively impact the existing functionality of an application.…

Separation of Concerns (SoC) is a foundational design principle: split your system into parts, where each part focuses on a single, well-defined responsibility. Done well, SoC makes code…

Smoke Testing (also called Build Verification Testing) is a type of software testing that ensures the most important functions of an application work correctly after a new build…

State is the “memory” of a system—the data that captures what has happened so far and what things look like right now. State management is the set of…

An Application Binary Interface (ABI) defines the low-level, binary-level contract between two pieces of software — typically between a compiled program and the operating system, or between different…

Dependency Injection (DI) is a design pattern in software engineering where the dependencies of a class or module are provided from the outside, rather than being created internally.…

A Heisenbug is a type of software bug that seems to disappear or alter its behavior when you attempt to study, debug, or isolate it. In other words,…

Loose coupling is a design principle in software engineering where different components, modules, or services in a system are designed to have minimal dependencies on one another. This…

MVC stands for Model–View–Controller, a popular architectural pattern used in software engineering. An MVC framework provides a structured way to separate concerns in an application, making development, testing,…

The Testing Pyramid is a concept introduced by Mike Cohn in his book Succeeding with Agile (2009). It illustrates the ideal distribution of automated tests across different levels…

The Waterfall Model is one of the earliest and most traditional approaches to software development. It follows a linear and sequential design process, where each phase must be…

YAGNI stands for “You Aren’t Gonna Need It”. It is a principle from Extreme Programming (XP) that reminds developers not to implement functionality until it is absolutely necessary.…