Apex Enterprise Patterns: Domain and Selector Layers

As Salesforce applications grow, unorganized Apex triggers and query logic can make your codebase difficult to maintain and test. Adopting industry-standard design patterns is the key to building scalable, enterprise-grade applications that stand the test of time. This text-based course guides you through the fundamental principles of separation of concerns using Apex Enterprise Patterns. You will transition from writing monolithic Apex code to designing modular, clean, and highly testable applications by isolating your database queries and business rules. What you'll learn: • Understand the core principles of Separation of Concerns (SoC) in Apex development • Implement Selector layers to centralize and optimize database queries • Design Domain layers to manage business logic and enforce validation rules • Apply modern Apex programming practices, including type-safe bulkification • Practice writing unit tests using robust mocking techniques for isolated logic execution • Structure your trigger handlers to delegate responsibilities cleanly to the domain layer. You will start with foundational concepts of architectural patterns and key terminology before exploring the mechanics of selectors and domain classes. Through clear written explanations and practical code examples, you will learn how to refactor legacy code into a modern, maintainable enterprise structure. This course is designed for Salesforce developers who are familiar with basic Apex programming and want to elevate their architectural skills. No prior experience with enterprise design patterns is required. Start reading today to build more robust and maintainable Salesforce applications.