Use the “Schema” class to dynamically access object and field names. The “Schema” class allows you to access object and field names as strings, which can be useful for generating dynamic SOQL queries or for building more flexible code. For example, you can use the “Schema” class to build a dynamic SOQL query that can handle any object in the system, rather than hard-coding the object name.

Read the below posts –

• “Dynamic Apex – Build Dynamic SOQL and SOSL“
• “Dynamic Apex – Playing with CRUD and FLS“
• “Dynamic Apex – Sky is The Limit“

Avoid hard-coding IDs. Hard-coding IDs can make your code fragile and difficult to maintain. Instead, use SOQL queries to dynamically look up record IDs when needed.

Use the “with sharing” keyword to enforce sharing rules. The “with sharing” keyword ensures that your Apex code respects the organization’s sharing rules and user permissions. This can help prevent users from seeing data they are not supposed to have access to.

Use bulkification techniques to handle large data sets. Apex code has limits on the number of records that can be processed in a single transaction. To handle large data sets, you will need to use bulkification techniques such as batch Apex or collections.

Use the “Apex Governor Limits” Cheat Sheet to stay within limits. Apex has a number of limits that can impact the performance of your code, such as the maximum number of SOQL queries allowed in a single transaction. Use the “Apex Governor Limits” Cheat Sheet to stay within these limits and ensure your code performs well.

Write unit tests to ensure code quality. Apex code must be accompanied by unit tests that validate the code’s functionality. These tests should aim to cover a variety of scenarios and edge cases to ensure the code is robust and reliable.

Use try-catch blocks to handle exceptions. Try-catch blocks allow you to gracefully handle exceptions and provide useful feedback to the user. This can help prevent your code from crashing when unexpected errors occur.

Use the “Apex Code Best Practices” guide. Salesforce has published an “Apex Code Best Practices” guide that provides a wealth of information on how to write high-quality Apex code. Be sure to familiarize yourself with this guide and follow its recommendations.

Use the “Apex Optimization Tips” guide. The “Apex Optimization Tips” guide provides a number of recommendations for optimizing the performance of your Apex code. Follow these tips to ensure your code executes efficiently and does not exceed limits.