SAX Parser
SAX (Simple API for XML) Parser is an event-driven XML parsing tool that processes XML documents sequentially, generating events (like start element, end element, text) as it reads through the data. It is memory-efficient because it does not load the entire XML document into memory at once, making it suitable for large files or streaming data. SAX parsers are widely implemented in programming languages such as Java, Python, and C++ through libraries like javax.xml.parsers in Java or xml.sax in Python.
Developers should use a SAX Parser when working with large XML files or streaming XML data where memory usage is a concern, as it avoids the overhead of building a full document object model. It is ideal for applications like log processing, data extraction from feeds, or real-time XML parsing in server environments. However, it is less suitable for tasks requiring random access to XML elements or complex document manipulation, where DOM parsers are preferred.