Top 5 tips for optimizing Dynamics 365 Business Central development

Codeunits: These are containers for code that can be invoked from other objects such as pages, reports, or other codeunits. By encapsulating specific functionalities within codeunits, you can easily reuse and maintain your code.

Extension Objects: Extensions allow you to customize Business Central without modifying the base application code. This ensures that your customizations are upgrade-safe and can be easily managed.Event Subscribers: Use event-driven programming to decouple your custom logic from the core application. Event subscribers help you react to specific events in Business Central, making your code more modular and maintainable. 

Use SETRANGE and SETFILTER: These functions help you filter data directly on the SQL server, reducing the amount of data transferred to the application tier.

Indexing: Ensure that your tables have appropriate indexes to speed up data retrieval. Analyze query performance and add indexes where needed.

Avoid Nested Loops: Limit the use of nested loops in your queries, as they can significantly impact performance. Use JOINs and other set-based operations instead.

Temporary Tables: Use temporary tables to store intermediate results and frequently accessed data. This reduces the number of database queries and improves performance.

Application Caching: Implement caching mechanisms within your application to store data in memory. This can be achieved using AL language constructs such as Dictionaries or the .NET Interoperability feature for more complex caching scenarios.

Data Caching Add-Ins: Leverage third-party add-ins or built-in caching solutions provided by Business Central to optimize data retrieval and reduce latency.

Consistent Naming Conventions: Use meaningful and consistent naming conventions for variables, functions, and objects. This improves code readability and maintainability.

Code Comments: Add comments to explain the purpose and logic of your code. This helps other developers understand your code and facilitates future maintenance.

Code Review: Conduct regular code reviews to ensure adherence to best practices and identify potential issues early in the development process.

Refactor Regularly: Regularly refactor your code to improve its structure and eliminate redundant or obsolete logic. This keeps your codebase clean and efficient. 

Automated Testing: Implement automated testing frameworks to ensure that your code changes do not introduce new bugs or regressions. Automated tests can be run as part of your CI pipeline, providing immediate feedback on code quality.

Version Control: Use version control systems such as Git to manage your codebase. This allows for better collaboration, tracking of changes, and easier rollback of code if needed.

Continuous Deployment: Automate the deployment process to ensure consistent and reliable releases. Use tools like Azure DevOps or GitHub Actions to set up CI/CD pipelines for Business Central.

Monitoring and Feedback: Continuously monitor the performance and behavior of your application in production. Gather feedback from users and use it to improve your code and processes.