SuiteScript Best Practices

This section provides best practices for Suite Script optimization : - 

• Design your user event scripts to execute in under 5 seconds, Suitelets and Portlets to execute in under 10 seconds, and scheduled scripts in under 5 minutes.
• Use nlapiLookupField instead of nlapiLoadRecord for fetching body field values.
• Use nlapiSubmitField instead of nlapiSubmitRecord for updating body field values. 
• Use inline editable child custom records whenever your use case calls for batch processing of multiple related/child records.
• Use nlapiScheduleScript to schedule (asynchronously execute) long-running operations from user events and Suitelets.
• Avoid calls to nlapiGetOldRecord() in user event scripts unless absolutely required. 
• set your script log level to ERROR or EMERGENCY.
• Deploy scripts to run as admin only if absolutely necessary to minimize security risk and to eliminate performance overhead.