What Is Asynchronous Apex? Short Description Asynchronous Apex allows code to run in the background, outside the main transaction, so Salesforce stays fast and responsive. Simple Explanation Asynchronous Apex is like sending work to a background worker while users continue their tasks. When to Use Async Apex Large data processing...
Mocking Callouts Why Callout Mocking Is Required Salesforce does not allow real HTTP callouts in tests.Instead, you must mock the external response. Simple Explanation In tests, Salesforce says: “Don’t call the real internet—pretend it replied.” Real-Life Example Testing a payment API without charging a real credit card. HttpCalloutMock Example @isTest...
Test Classes & Test Methods Why Testing Matters in Salesforce In Salesforce, you can’t deploy Apex to production safely without tests. Tests ensure your code works and doesn’t break other features. Simple Explanation Tests are like a safety check before a car goes on the road. What Is a Test...
CRUD & FLS Checks What Are CRUD & FLS? CRUD controls whether a user can Create, Read, Update, Delete records. FLS (Field-Level Security) controls whether a user can see or edit specific fields. Simple Explanation CRUD decides which door you can enter,FLS decides which drawers you can open inside the...
Apex Governor Limits (Why They Exist) What Are Governor Limits? Governor limits are Salesforce-enforced rules that restrict how much system resources Apex code can use in a single transaction. Simple Explanation Governor limits are like speed limits on a highway—they keep everyone safe and ensure one driver doesn’t block others....
Bulkification (Most Important Rule) What Is Bulkification? Bulkification means writing trigger logic that works correctly when one record or many records are processed together. Simple Explanation Salesforce can save 200 records at once.Your trigger must handle all of them in one go. Real-Life Example Processing payroll for 1 employee vs...
Trigger Events & Context Variables What Is a Trigger? A Trigger is Apex code that runs automatically when a record is inserted, updated, deleted, or restored. Simple Explanation A trigger is like a motion sensor—when data changes, the trigger reacts. Trigger Events (When Triggers Fire) Common trigger events: before insert...
When Salesforce consumes external events (for example, Platform Events published by another system), your integration logic must be resilient. Failures will happen — networks time out, APIs throttle, or payloads contain invalid data. A robust event consumer does two key things: It retries transient errors safely without looping forever. It...
Salesforce provides two powerful ways to move events in and out of the Event Bus — the modern Pub/Sub API and the Streaming API family (CometD/EMP). Both deliver events with at-least-once semantics and support replay, but they differ in transport protocols, performance, payload formats, and operational fit. Understanding these differences...
Salesforce offers two major ways to stream events across systems — Platform Events (PE) and Change Data Capture (CDC).Both use the Salesforce Event Bus with replay support, but they exist for different reasons. In short: Platform Events are custom, intentional messages you define to represent business actions or commands. Change...
