What is the default DataWeave buffer size, and what happens when you exceed it?

What is the default DataWeave buffer size, and what happens when you exceed it?

• A. 1.5 MB; It will use your system hard disk as buffer
• B. 5 MB; It will throw an error
• C. 512 KB; It will drop data
• D. 10 MB; It will increase memory usage

Answer: (A)

DataWeave uses a fixed in-memory buffer to hold data during transformations. The default size of that buffer is 1.5 MB. When the incoming data exceeds this limit, DataWeave spills the extra data to the disk, using the system’s hard drive as a temporary buffer. This keeps memory usage under control and allows large payloads to be processed, though it can slow things down due to disk I/O. So, the correct idea is that the default in-memory buffer is 1.5 MB, and exceeding it causes data to be buffered on disk. The other options don’t fit because exceeding the buffer doesn’t throw an error, drop data, or imply a larger in-memory limit; instead, it gracefully uses disk storage to continue processing.

DataWeave uses a fixed in-memory buffer to hold data during transformations. The default size of that buffer is 1.5 MB. When the incoming data exceeds this limit, DataWeave spills the extra data to the disk, using the system’s hard drive as a temporary buffer. This keeps memory usage under control and allows large payloads to be processed, though it can slow things down due to disk I/O.

So, the correct idea is that the default in-memory buffer is 1.5 MB, and exceeding it causes data to be buffered on disk. The other options don’t fit because exceeding the buffer doesn’t throw an error, drop data, or imply a larger in-memory limit; instead, it gracefully uses disk storage to continue processing.