Streaming supports efficient processing of large data objects such as files, documents, and records by streaming the data through Mule rather than reading the whole thing into memory. Mule 4 supports Non repeatable stream, repeatable in-memory stream and repeatable file stored stream , that vary with convenience and robustness / efficiency. DataWeave also supports end-to-end streaming that speeds up data processing. The above concepts can be made use of to process large data sets efficiently.