Building a Pomodoro Timer in Go

Building a robust productivity tool requires a solid architectural foundation and a clear understanding of state management. This text-based course guides you through the process of designing and coding the core business logic for a Pomodoro timer application from scratch using Go. You will start by mastering the fundamental concepts of state, intervals, and time tracking before writing your first lines of code. By focusing on clean logic and modular design, you will learn how to manage application state transitions seamlessly without relying on complex external frameworks. What you will learn: Understand the core mechanics of the Pomodoro technique and translate them into software models; Define and manage application states for work sessions, short breaks, and long breaks; Implement robust timer control functions for starting, pausing, and resetting intervals; Apply modern Go practices, including structured types, custom errors, and basic unit testing with the standard library; Organize your Go package structure to ensure maintainable and testable code. The course begins with foundational definitions of timer state machines and progresses step-by-step through designing the data structures, writing the control logic, and validating your code. This course is designed for beginner to intermediate Go developers who want to practice building real-world utility applications. No prior experience with timer APIs is required, but a basic familiarity with Go syntax is helpful. Start reading today to build your own functional productivity engine in Go.