Learn SALESFORCE-APEX with Real Code Examples

Apex runtime executing inside Salesforce application servers

Metadata-driven execution for triggers, classes, and async jobs

Transaction manager enforcing governor limits

Integrated SOQL/SOSL query engine

API gateway for callouts and inbound service endpoints

Developer writes Apex -> Metadata API deploys -> Salesforce runtime executes

Triggers fire on DML events

Async jobs processed by platform queue

REST/SOAP endpoints exposed via Apex classes

LWC controllers call Apex methods

Trigger handler frameworks

Service and domain layers

Unit of Work patterns

Dependency injection frameworks

Event-driven architecture with Platform Events

Global order management with Apex + Flow orchestration

High-volume lead routing using Batch + Queueable

Custom omni-channel integrations via REST services

Data sync with ERP using middleware and Apex callouts

Event-driven architecture using Platform Events

Bulkify everything

Avoid hard-coded IDs

Respect governor limits

Separate business logic from triggers

Write robust test coverage with mocks

Split large transactions into async operations

Use Batch Apex for millions of records

Optimize SOQL queries

Use field indexes for large data volumes

Cache reference data

Refactor Workflow/Process Builder to Flow/Apex

Upgrade API versions in classes

Retire legacy triggers with modern frameworks

Modularize using unlocked packages

Use static analysis to detect deprecated APIs