A high-performance XML pull reader and writer library for Rust, optimized for speed and minimal memory allocation.
quick-xml is a Rust library for parsing and writing XML with a focus on high performance and low memory overhead. It provides a pull-based reader and writer designed to efficiently process large XML files, solving the need for fast and memory-conscious XML handling in Rust applications.
Rust developers working with XML data, particularly those processing large files or requiring high throughput, such as in data pipelines, web services, or system integrations.
Developers choose quick-xml for its benchmarked speed—up to 50 times faster than alternatives like xml-rs—and its almost zero-copy design that minimizes memory usage, while offering features like encoding support and Serde integration.
Rust high performance xml reader and writer
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Benchmarks show it can parse XML up to 50 times faster than xml-rs, making it ideal for high-throughput data processing in performance-sensitive applications.
Uses an almost zero-copy approach with Cow and buffer reuse options, minimizing allocations and overhead when handling large XML files.
With the optional encoding feature, it handles non-UTF8 XML documents, expanding compatibility with legacy or international data sources.
The serialize feature allows easy mapping between XML and Rust structs, simplifying data binding despite some performance caveats.
The API requires passing and clearing buffers for reading events, adding boilerplate and complexity compared to more ergonomic parsers.
The reader does not implement Iterator, forcing developers to use manual loops and event handling, which can be less intuitive and error-prone.
While faster than alternatives, the Serde integration admits to having unnecessary copies, potentially impacting performance in copy-sensitive scenarios.