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Trigger Framework

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Apex & Dev

Why Trigger Handlers Break at Scale in Salesforce

By Vinod Tiwari
💬 In plain words: A trigger handler is a hallway, not a house. When a Salesforce org scales up, if you don't have separate rooms (layers) for your logic, everything piles into that one hallway. Eventually, you get a massive, fragile class where every new change risks breaking everything else. Layered architecture exists precisely to solve this problem. 📌 Example: In Year 1, your AccountTriggerHandler is a tidy 300 lines of code. By Year 4, it has swollen to 5,000 lines. Fourteen different developers are committing changes to it, and every deployment seems to break an unrelated feature. You've hit the "God-handler" ceiling. You need to split it up—because a hallway can't hold an entire house. 🎬 Real-Life Example: The 5,000-Line Hallway Imagine a class called DeliveryTriggerHandler that is five years old and 5,000 lines long. The Old/Bad Way: Every new feature just became one more method stuffed into the same c...
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Salesforce Basics

The Salesforce Separation of Concerns: Understanding Service, Domain, and Selector Layers

By Vinod Tiwari
In plain words: Large enterprise organizations split their Apex code into specific functional "floors" or layers. The Service layer holds the business logic, the Domain layer handles object-specific rules, the Selector layer manages all queries, and the Unit of Work executes database commits safely. This is known as "Separation of Concerns." As Salesforce implementations grow, unstructured Apex quickly turns into spaghetti code. When multiple developers write SOQL queries and DML statements randomly across triggers, batch classes, and LWC controllers, the system becomes fragile and unscalable. To solve this, developers use the Enterprise Design Patterns (often modeled via the fflib architecture) to give every piece of logic a strict, predictable home. Key Points: The Four Layers of Apex The core concept is to assign exactly one job to each layer of your code. Selector Layer: The absolute only place where SOQL queries live. D...
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Topic Apex Triggers Enterprise Architecture Governor Limits One Trigger Per Object Salesforce Development Trigger Framework Trigger Handler
Apex Triggers Enterprise Architecture Governor Limits One Trigger Per Object Salesforce Development Trigger Framework Trigger Handler

Mastering Apex Trigger Frameworks in Salesforce: Architecture, Handlers & Best Practices

By Vinod Tiwari
In plain words: An Apex Trigger Framework is an architectural pattern that moves business logic out of raw .trigger files and into modular Apex classes. By routing database events through a single handler and dispatcher per object, it ensures predictable execution order, prevents infinite recursion loops, and makes code testable and reusable. Writing business logic directly inside trigger definitions quickly creates monolithic, unmanageable code. When multiple triggers execute on the same sObject, Salesforce does not guarantee the order in which they fire. An enterprise Apex Trigger Framework enforces the foundational "One Trigger Per Object" rule, separating event orchestration from business logic and ensuring complete control over execution flow. 1. Why Every Salesforce Org Needs a Trigger Framework Without a structured framework, enterprise codebases suffer from severe maintainability and performance bottlenecks: Unpredictable Executio...
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Topic Apex & Dev
Apex & Dev

Salesforce Apex Trigger Interview Questions: 3 Real-World Scenarios with Solutions

By Vinod Tiwari
In plain words: Scenario-based Apex trigger interview questions assess whether a developer understands the Salesforce Order of Execution, how to write bulkified code that never exceeds governor limits, and when to use before vs. after events properly. During technical interviews for Salesforce Developer and Technical Architect roles, interviewers look beyond basic syntax. They present real-world scenarios to evaluate your understanding of bulkification, recursion management, governor limits, and clean trigger architecture. Below are three classic trigger scenarios with production-ready solutions. Scenario 1: Using Before Update for Direct Field Updates Question: Whenever a Case status changes to "Closed", automatically set a custom date/time field ( Closed_Timestamp__c ) to the current timestamp. If reopened, clear the field. How do you implement this efficiently without DML statements? Solution: Use a before update trigger to update fi...
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Read Apex & Dev guide: Salesforce Apex Trigger Interview Questions: 3 Real-World Scenarios with Solutions