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Zipkin: Twitter's new open source distributed tracing project - http://www.h-online.com/newsticker/news/item/Zipkin-Twitter-s...
"Gathering information about how quickly services are running, or not, can get very complex when dealing with dozens of disparate services over many systems. To solve this problem, Twitter created its own distributed tracing system called "Zipkin" and has now made it available as open source. According to its developers, Zipkin is "closely modelled" after a Google research paper from 2010 about Dapper, a large-scale distributed systems tracing infrastructure." ‎- silpol