Java Library Fletch Promises Faster XML Extraction Without Full Document Parsing

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A Java developer has released Fletch, an open-source library designed to extract values from XML documents without materializing the entire document tree in memory. Traditional Java XML approaches such as DOM and JAXB decode and allocate every element and tag name regardless of whether the data is needed, creating significant garbage-collection overhead at scale. StAX offers streaming as an alternative but produces verbose, difficult-to-maintain code. Fletch addresses this by letting developers declare only the fields they need, after which the engine makes a single pass over the raw bytes to extract just those values. The library targets high-volume XML workloads common in e-invoicing, financial messaging, and legacy SOAP services, and is available via Maven and Gradle.

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ProgrammingDEV Community ·

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