What is the recommended maximum size for batch job parts to ensure optimal performance?

The recommended maximum size for batch job parts to ensure optimal performance is 200. This balance allows for efficient processing without overloading the system or causing delays. A batch size that is too small can lead to increased overhead with job execution, while a size that is too large may result in longer processing times and potential performance issues.

Having a maximum size of 200 helps maintain the system's responsiveness and optimizes resource usage, which is important for maintaining overall performance and user experience. It strikes a suitable balance between processing efficiency and manageability within the Salesforce environment.