Convert Tweet ID String to a higher base (ie. Base64)

Asked Aug 09 '13 at 02:15

Active Aug 09 '13 at 02:15

Viewed 143 times

Tweet IDs are 64 bit decimals stored as strings since JavaScript cannot handle 64 bit integers. I want to store my Tweets in a Database as JSON using the ID as the key. To keep the database small, I want to optimize my ID length. JSON is UTF-8 with a few restricted characters. So, Base64 is probably best (a-z,A-Z,0-9, $, #).

What's a robust way to do this? Note, I will need to encode and decode and I am using Node.js so I probably need to leave it as a string when I encode.

Tweet ID Example: 112652479837110273

asked Aug 09 '13 at 02:15

Justin Elkow

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related: http://stackoverflow.com/questions/6213227/fastest-way-to-convert-a-number-to-radix-64-in-javascript – gr3co Aug 09 '13 at 02:18
Why don't you just leave it as it is? – Musa Aug 09 '13 at 02:19
gr3co, thanks for the link. As a follow on. Is there any risk for numbers above 53 bits using this method? – Justin Elkow Aug 09 '13 at 07:12
Musa, I am using CouchDB which tends to take a lot of disk space and the ID in particular has a dramatic impact on disk usage. – Justin Elkow Aug 09 '13 at 07:13

Convert Tweet ID String to a higher base (ie. Base64)

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