CODEWITHSUNDEEP
algorithmcookiescharacter-encodingcompressionurlencode
Maxim Veksler
Maxim Veksler

Reputation: 30172

Compression algorithm that produces url safe data

I'm looking to store cookie data in a compact form.

Is there such a thing as a compression algorithm that produces URL safe output? Currently my approach is 

String jsonData = GSON.toJson(data);
byte[] cookieBinaryData = jsonData.getBytes("UTF-8");
byte[] cookieSnappyData = Snappy.compress(cookieBinaryData);
String cookieBase64Data = new Base64(true).encodeToString(cookieSnappyData);

From this cookieBase64Data is the one stored inside the cookie. I would be happy to skip the Base64 hop.

Upvotes: 5

Views: 1352

Answers (2)

Sarel Botha
Sarel Botha

Reputation: 12700

How much are you saving by doing this? Is it worth it?

How about just saving an ID in a cookie and then looking up all the data in a database? Sort of like a long-lived session but you're controlling what data you store so there isn't a huge amount.

Upvotes: 1

Cybercartel
Cybercartel

Reputation: 12582

No. Compression is often a prefix-free code and not a charset. You can use yEnc encoding to safe some bits. Personally I'm not sure why yEnc is doomed. It uses an extended 8 bit ASCII charset and adds a lot less overhead (2%) to the compressed data: http://en.wikipedia.org/wiki/YEnc

Upvotes: 0

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