$6 Discount on Ruby Performance Optimization Book (Paperback) Today on Amazon
Amazon sells my book today for $30 ($6 off). I just found this myself by accident. Given the unpredictable nature of Amazon, you'd better hurry up and get your book while the sale is still on.
Here's the link to my book on Amazon: Ruby Performance Optimization: Why Ruby is Slow, and How to Fix It
The links above are my own affiliate links. Hope you don't mind clicking one of them and supporting me and my work.
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