Acknowledgments

We thank Peter Kriens for his in-depth feedback that improved the book and for writing the foreword. Thanks also to all the early readers of the manuscript and the book forum posters who provided valuable feedback throughout the writing process.

The following peer reviewers who read the manuscript at various stages of its development deserve special thanks for their time and effort: Cheryl Jeroza, David Kemper, Gabor Paller, Jason Lee, Massimo Perga, Joseph Ottinger, Jeroen Benckhuijsen, Ted Neward, Denis Kurilenko, Robert “Kebernet” Cooper, Ken Chien, Jason Kolter, Jeremy Flowers, Paul King, Erik van Oosten, Jeff Davis, Doug Warren, Peter Johnson, Costantino Cerbo, Dmitry Sklyut, David Dossot, Mykel Alvis, Eric Swanson, Patrick Steger, Jeff Addison, Chad Davis, Peter Pavlovich, Ramarao Kanneganti, Steve Gutz, Tijs Rademakers, John Griffin, and Sivakumar Thyagarajan. Their suggestions made this a better book. We’d also like to single out Norman Richards for his technical proofreading of the final manuscript during production.

The staff at Manning have been supportive throughout this lengthy ordeal; we’d especially like to thank our development editor Cynthia Kane for putting up with us; also Marjan Bace, Michael Stephens, and the production team of Tiffany Taylor, Katie Tennant, and Gordan Salinovic.

Last, we’d like to thank the Apache Felix community for their contributions to all the code and discussions over the years.

Individually, Richard thanks his wife and daughter and apologizes for the many distractions this book caused. Karl thanks his wife Doreen and his children Elisabeth and Holger for all the love, support, and understanding. Stuart thanks his dear wife Hayfa for the motivation to finish this book. David thanks his wonderful family, and especially his wife Imogen, for the support and encouragement to finish this book.