Is Your Apex Code Efficient

Writing Efficient and Scalable Apex Code: Best Practices for Salesforce Developers

In the world of Salesforce development, writing efficient and scalable Apex code is not just a good habit—it’s essential. Well-structured code ensures better performance, easier maintenance, and a smoother experience for both users and admins.

Whether you’re building triggers, batch jobs, or integrations, following Apex best practices will help you avoid common pitfalls and stay within governor limits.

Here are some proven best practices every Salesforce developer should follow:

1. Bulkify Your Code

Salesforce is built to handle bulk data operations, and your Apex code should be too. Always assume your code could be triggered by multiple records at once.

Use collections like List, Set, and Map to process records efficiently. Bulkifying ensures that your logic runs smoothly even when thousands of records are processed in a single transaction.

Example:
Instead of processing a single record at a time, handle all records in a list received from a trigger.

2. Avoid SOQL and DML Inside Loops

This is one of the golden rules of Apex. Placing SOQL queries or DML statements inside loops can quickly lead to hitting Salesforce governor limits, causing your code to fail.

Always move your queries and DML operations outside loops, using collections to store data and perform operations in bulk.

3. Use Custom Metadata and Custom Settings

Avoid hardcoding IDs, field names, or configuration values in your code. Instead, use Custom Metadata Types or Custom Settings.

This not only makes your code more flexible and scalable but also allows admins to modify configurations without touching the codebase.

4. Leverage Asynchronous Processing

Long-running operations, such as external API calls or large data processing, can slow down user transactions.

Use asynchronous Apex features like Future Methods, Queueable Apex, Batch Apex, or Platform Events to handle such tasks in the background.

This improves performance and keeps your application responsive.

5. Optimize SOQL Queries

Efficient SOQL queries are vital for performance. Always:

• Select only the fields you actually need.

• Use indexed fields in WHERE clauses to improve query performance.

• Avoid unnecessary nested queries or complex filtering logic.

A few small changes in query design can significantly boost speed and reduce execution time.

6. Follow the “One Trigger per Object” Rule

Maintain one trigger per object and delegate logic to a Trigger Handler class.

This keeps your code clean, organized, and easier to maintain. It also promotes reusability and prevents logic duplication across multiple triggers.

7. Write Meaningful Unit Tests

Code coverage is important, but quality testing matters more.

Write unit tests that:

• Cover edge cases

• Handle bulk data

• Include proper assertions to validate outcomes

Well-written tests ensure that your code behaves as expected and remains stable during deployments.

8. Enforce Security Best Practices

Security should never be an afterthought. Always:

• Use “with sharing” in your Apex classes to respect user permissions.

• Apply Security.stripInaccessible() to enforce field-level and object-level security.

These practices help protect sensitive data and align your code with Salesforce’s security model.

Final Thoughts

Good Apex development is about writing clean, scalable, and maintainable code that performs efficiently under any condition.

By following these best practices, you not only create robust solutions but also make your org more reliable and future-ready.

Remember — code that scales well today will save hours of debugging and refactoring tomorrow.