Node.js Zlib Compression Guide

The zlib module provides compression using Gzip and Deflate/Inflate algorithms. Here's how to use it.

Best Practices#

Compression Choice:
✓ Gzip for general use
✓ Brotli for web content
✓ Deflate for compatibility
✓ Consider content type

Performance:
✓ Use streams for large files
✓ Choose appropriate level
✓ Consider CPU vs size tradeoff
✓ Use worker threads if needed

Error Handling:
✓ Handle corrupted data
✓ Clean up partial files
✓ Validate before decompressing
✓ Set reasonable timeouts

Avoid:
✗ Sync methods for large data
✗ Maximum compression always
✗ Ignoring memory limits
✗ Re-compressing compressed data

The zlib module provides efficient compression using Gzip, Deflate, and Brotli algorithms. Use streams for large files, choose appropriate compression levels, and implement proper error handling. Brotli typically achieves better compression for web content, while Gzip offers wider compatibility.

Node.js Zlib Compression Guide

Basic Compression#

Sync Methods#

Stream Compression#

HTTP Compression#

Compression Options#

Error Handling#

Chunked Processing#

JSON Compression#

Archive Operations#

Performance Optimization#

Best Practices#

Conclusion#

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