Suitelets are powerful tools within the NetSuite platform, enabling developers to create custom UI pages for internal users. However, as functionality grows, Suitelets can become bloated and impact performance. Here are some key best practices I followed to optimize Suitelet scripts recently:
1. Modularize the Code
Breaking the logic into smaller helper functions not only improves readability but also simplifies debugging and future enhancements.
2. Use Caching Where Appropriate
For frequently accessed static data, using NetSuite’s Cache module (or even session-level storage) helps reduce unnecessary load on the backend.
3. Minimize Unnecessary API Calls
Always ensure that your script does not make redundant calls to search.load, record.load, or similar expensive operations. Load only what’s needed.
4. Optimize UI Rendering
Avoid rendering complex forms or sublists unless absolutely required. If the Suitelet serves multiple purposes, use conditional logic to build the UI dynamically.
5. Log Strategically
Log key checkpoints, but avoid logging large objects or too many details in production. This helps monitor without bloating execution logs.
By following these techniques, my Suitelet script execution time dropped significantly while the UI responsiveness improved. Whether you’re building for internal tools or external-facing forms, optimization matters.