# exmala

**Repository Path**: mirrors_thlorenz/exmala

## Basic Information

- **Project Name**: exmala
- **Description**: Comparing different approaches to parse large XML messages.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: gh-pages
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-08-18
- **Last Updated**: 2026-05-30

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# exmala

Comparing different approaches to parse large XML messages.

[![img](assets/buffering-streaming-htmlparser.gif)](http://thlorenz.github.io/exmala/client/)

## Streaming

When not buffering and writing to multiple parsers at once we risk running out of memory since all these parsers keep
a stack and other stateful things around that cost us memory.

Depending on the parser lib we use that happens at a specific level of concurrency.

#### htmlparser2

```
settings:
   { parser: 'htmlparser',
     streaming: true,
     concurrency: 1000,
     number: 2000,
     gc: false,
     file: '/Users/thlorenz/dev/js/exmala/data/ibm-request.soap.xml',
     resultsFile: '/Users/thlorenz/dev/js/exmala/results/streaming-htmlparser-c1000-n2000_ibm-request.soap.xml.json' } }
FATAL ERROR: CALL_AND_RETRY_2 Allocation failed - process out of memory
```

#### xml2js 

```
{ settings:
   { parser: 'xml2js',
     streaming: true,
     concurrency: 500,
     number: 2000,
     gc: false,
     file: '/Users/thlorenz/dev/js/exmala/data/ibm-request.soap.xml',
     resultsFile: '/Users/thlorenz/dev/js/exmala/results/streaming-xml2js-c500-n2000_ibm-request.soap.xml.json' } }
FATAL ERROR: CALL_AND_RETRY_2 Allocation failed - process out of memory
```

## License

MIT