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Differences Between RESTLet and REST Web Services in NetSuite
1. Architecture & Implementation:
• RESTLet: This is a custom-built RESTful service, created using SuiteScript (JavaScript-based). It allows developers to define their own endpoints by creating scripts that handle specific operations (GET, POST, PUT, DELETE). RESTLets provide more flexibility since you write your own logic.
• REST Web Services (SuiteTalk REST API): This is a pre-built REST API provided by NetSuite. It follows the REST architectural style, allowing interaction with standard records through a well-defined set of endpoints and a standardized response format (JSON).
2. Customization:
• RESTLet: Highly customizable since you control the full logic of the request and response cycle. You can handle custom record types, complex business logic, and even third-party integrations.
• REST Web Services: Pre-defined endpoints and methods. While you can interact with custom records, the customization is limited to what NetSuite’s API allows. It’s more constrained compared to RESTLet but faster to implement for standard use cases.
3. Use Cases:
• RESTLet:
• Custom integrations where you need to perform complex operations (e.g., calculations, logic involving multiple records).
• Scenarios where SuiteScript can handle dynamic inputs and business logic.
• When working with non-standard/custom record types.
• Complex data transformation before sending or after receiving data.
• REST Web Services:
• Standard integration scenarios where you need CRUD (Create, Read, Update, Delete) operations on standard or custom records.
• More efficient for simple API interactions (e.g., interacting with a customer or sales order).
• Scenarios where you don’t need much custom business logic.
4. Performance:
• RESTLet: Performance can vary depending on the complexity of the custom logic you implement. RESTLets can be slower for high-volume transactions if they involve heavy processing.
• REST Web Services: Generally optimized for bulk operations and high-volume data access. The performance for simple data access or modification is often better with REST Web Services since it leverages NetSuite’s internal processing.
5. Limits:
• RESTLet: Can handle multiple operations within a single script, but you have to be mindful of governance limits. There’s also a limitation on the number of script executions (governance points per account).
• REST Web Services: There are specific API governance limits on how many calls you can make, but it’s generally designed for more consistent and higher-volume usage.
When to Use Each:
• Use RESTLet when:
• You need highly customized business logic that goes beyond basic CRUD operations.
• You are integrating with third-party systems where custom handling of data is required.
• Your use case involves custom records and complex workflows that can’t be handled by standard APIs.
• Use REST Web Services when:
• You are performing basic CRUD operations on standard or custom records.
• You prefer a standardized approach to interacting with NetSuite’s data.
• You want to take advantage of pre-built features for bulk data processing or simpler integrations.