What is the default buffer size of DataWeave before it uses the hard disk as buffer?

The correct answer is that the default buffer size of DataWeave before it resorts to using the hard disk is 1.5 MB. This means that DataWeave can handle in-memory data processing up to this limit, which enhances performance by leveraging the speed of RAM.

When data volume exceeds this threshold, DataWeave will then utilize the hard disk for storage, which is significantly slower compared to in-memory operations. This 1.5 MB buffer size strikes a balance between efficient memory usage and performance, allowing developers to process small to medium datasets quickly without causing performance bottlenecks.

Understanding this buffer size is crucial for architects when designing data transformation processes, as it helps to optimize resource utilization and ensure efficient data handling in MuleSoft applications.