How Can I Compress Data in JavaScript for Server-Side Caching?

Gzip in JavaScript

To minimize the data stored in a fixed-size server-side cache through AJAX, consider compressing the data before sending it to the server. While JavaScript implementations of Gzip are scarce, there are alternatives such as LZW compression.

LZW Implementation

The popular jsolait library offers LZW compression and decompression functions under the LGPL license:

// Encode a string using LZW
function lzw_encode(s) { ... }

// Decode a LZW-encoded string
function lzw_decode(s) { ... }

Usage:

const compressedData = lzw_encode(JSON.stringify(data));
// Send compressed data to the server

// On the server-side:
const decompressedData = lzw_decode(compressedData);
// Parse and use decompressed JSON data

Additional Options

For a more advanced Unicode-compatible LZW solution, consider using the "LZ-String" library available at http://pieroxy.net/blog/pages/lz-string/index.html.

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