Writing a book is never a single person' job. During the course of this journey, I have relied on many people, both directly and indirectly. I would like to thank the Akka community, from whom I have learned, and continue to learn, every day.

I would like to specially thank and David Ross who reviewed and contributed many helpful suggestions and improvements to my drafts.

I am grateful to my editor, Usha Iyer, Unnati Shah, and Joel Goveya at Packt Publishing for their help in this book. I would like to thank all my colleagues at Wipro Technologies specially Hari Burle, Sridhar PV, Aravind Ajad for all their support and encouragement. I have learned so much from each one of you, and for that I am grateful.

Last not the least, I would like to thank my family. My wife Kompal who has been a source of constant support throughout this journey. She handed managed the kids and other chores around the house while I was working late nights and on weekends. She was the constant motivator who egged me to go that extra mile whenever I felt it s too big a task. I want to thank my parents and brother Nitin who provided the moral support throughout this journey. I love you all.

To my children, Dale and Sabal, I am sorry I could' be around with you as much as we all wanted, and many times had to get you away from the laptop. I love you very much.