Links of the day 11 - 11 - 2014

Today's links 11/11/2014: Kafka and infrastructure, Product vision building, and software performance techniques

• Infrastructure for Data Streams : how to persist incoming data stream with guaranteed data availability and redundancy using Kafka at Chartbeat
• Idea stack : Idea Stack exercises and use case studies, illustrating how to build a vision for a product before developing it.
• Below an image of the various software improvement techniques :