Dan Cartoon grew up in Atlanta, Georgia, but now spends his time in the San Francisco Bay Area as a software engineer. He has worked at social and game-oriented software start-ups as well as at large companies. He enjoys working in the field of machine learning and building large-scale software systems. In his free time, he likes to play various musical instruments and take long walks on Northern California's foggy beaches.

Munish Kumar Gupta is a lead architect working for Wipro Technologies. Based in Bangalore, India, his day-to-day work involves solution architecture, application performance engineering, and helping enterprises adopt open source technologies.

He is always looking for patterns while solving problems, writing code, and making optimum use of tools and frameworks. He is the author of Akka Essentials, Packt Publishing.

Dae Myung Kang lives in South Korea. He has more than 10 years of experience in the software industry. His interest lies in studying in-memory cache and storage. He currently works as a backend software engineer for Daum Kakao. He is also a keen contributor of Redis/Twemproxy and Apache Tajo.

Jari Timonen is an experienced software enthusiast with over 10 years of experience in the software industry. His experience includes successful team leadership combined with understanding complex business domains and putting them into practice. He has built enterprise architectures, designed software, and programming. Having started his career in the finance industry, he currently works as a service architect in a telecommunications company. He practices pair programs and is keen on studying new technologies. When he is not building software, he is spending time with his family, fishing, exercising, or flying his radio-controlled model helicopter. He currently holds certifications that include Sun Certified Programmer for the Java 2 Platform, Standard Edition 5, Sun Certified Developer for the Java 2 Platform, Oracle Certified Master, and Java EE 5 Enterprise Architect.