QCon is a comprehensive technology event hosted by InfoQ China, a subsidiary of Geekbang Technology. It is held every year in London, Beijing, New York, Sao Paulo, Shanghai, and San Francisco. Since the first QCon in March 2007, over tens of thousands of technicians with many years of experience have participated in our technical pageant. QCon contents are based on practices and oriented to the community. Guest speakers share hot topics about technological innovations and practices here, available to technical team leaders, architects, engineering directors and developers with more than 5 years of working experience.