ApexArena Blog

In-depth guides on Salesforce development — Apex patterns, SOQL optimization, certification prep, and career advice written for working developers.

Latest Articles
Interview Prep
Top 25 LWC Interview Questions and Answers (2026)
Ace your Salesforce LWC interview — @api, @track, @wire, custom events, lifecycle hooks, imperative Apex calls, and SLDS with real code examples.
June 15, 2026  ·  12 min read
Apex Development
Apex Bulkification: The Complete Guide for Salesforce Developers
Master bulk-safe Apex — SOQL/DML in loops, Map patterns, governor limits table, a full bulkified trigger, bulk test class, and 5 interview Q&As.
June 10, 2026  ·  10 min read
Apex Development
Salesforce Apex Collections: List, Set and Map — Complete Guide
List vs Set vs Map — syntax, methods, real trigger patterns, 5 common mistakes with before/after code, and 8 collections interview Q&As.
June 20, 2026  ·  11 min read
Async Apex
Batch Apex vs Queueable Apex: When to Use Each in Salesforce
A practical guide to choosing between Batch and Queueable — covering use cases, governor limits, chaining, and real-world examples.
June 5, 2026  ·  8 min read
Certification Guide
Salesforce Platform Developer I Certification: Complete Study Guide 2026
Everything you need to pass PDI on your first attempt — exam format, topic breakdown, 4-week study plan, and exam day tips.
June 1, 2026  ·  8 min read
SOQL & Performance
SOQL Performance Tips: Write Faster Queries That Avoid Governor Limits
Practical SOQL optimization — selective queries, indexed fields, aggregate functions, and how to use the Query Plan tool.
May 25, 2026  ·  8 min read
Apex Development
Apex Trigger Best Practices: 10 Rules Every Salesforce Developer Should Follow
From one-trigger-per-object to recursion guards and handler patterns — the rules that prevent production incidents.
May 18, 2026  ·  8 min read
Career Guide
Salesforce Developer Career Guide 2026: Roadmap, Certifications & Salary
From your first certification to senior developer roles — a complete roadmap with salary benchmarks and the fastest path to getting hired.
May 10, 2026  ·  8 min read
Free Tutorials

Deep-dive reference pages for core Salesforce developer topics.

Tutorial
Apex Triggers: Complete Guide
Tutorial
SOQL: From Basics to Advanced
Tutorial
Batch Apex Tutorial
Tutorial
Queueable Apex Tutorial
Tutorial
Schedulable Apex Tutorial
Tutorial
Apex Test Classes Tutorial
Reference
Governor Limits Reference
Reference
50 Apex Interview Questions