We would like to thank Doug Lea, Michael Scott, Ron Rivest, Tom Corman, Michael Sipser, Radia Pearlman, George Varghese and Michael Sipser for their help in finding the right publication venue for our book.

We thank all the students, colleagues, and friends who read our draft chapters and sent us endless lists of comments and ideas: Yehuda Afek, Shai Ber, Martin Buchholz, Vladimir Budovsky, Christian Cachin, Cliff Click, Yoav Cohen, Dave Dice, Alexandra Fedorova, Pascal Felber, Christof Fetzer, Shafi Goldwasser, Rachid Guerraoui, Tim Harris, Danny Hendler, Maor Hizkiev, Eric Koskinen, Christos Kozyrakis, Edya Ladan, Doug Lea, Oren Lederman, Pierre Leone, Yossi Lev, Wei Lu, Victor Luchangco, Virendra Marathe, John Mellor-Crummey, Mark Moir, Dan Nussbaum, Kiran Pamnany, Ben Pere, Torvald Riegel, Vijay Saraswat, Bill Scherer, Warren Schudy, Michael Scott, Ori Shalev, Marc Shapiro, Yotam Soen, Ralf Suckow, Seth Syberg, Alex Weiss, and Zhenyuan Zhao. We apologize for any names inadvertently omitted.

We thank Mark Moir, Steve Heller, and our colleagues in the Scalable Synchronization group at Sun Microsystems for their incredible support during the writing of the book.