Learn APEX with Real Code Examples
Updated Nov 19, 2025
Performance Notes
Bulkify all operations
Cache results in maps
Minimize SOQL/DML
Use Queueable for long jobs
Use selective queries
Security Notes
Use WITH SECURITY_ENFORCED in SOQL
Validate user permissions
Enforce CRUD/FLS
Avoid exposing sensitive data in APIs
Use Named Credentials for integrations
Monitoring Analytics
Debug logs
Setup -> Apex Exception Emails
Async job monitoring
Apex Replay Debugger
Event monitoring
Code Quality
Follow trigger-handler pattern
Avoid SOQL/DML inside loops
Use descriptive naming
Write tests for all logic
Use static analysis tools