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A redis based, simple, yet performant red-envelope(红包) solution demo.
Read and comment JDK source code
Qart generates not-so-ugly qr codes. Check http://research.swtch.com/qart for its theory
A list of helpful back-end related questions you can use to interview potential candidates, test yourself or completely ignore.
A website/app powered by go-martini and qart. It generates pretty qr code.
A node.js app turning any web page into a clean view
a Go package to extract text from html