'Web Operations' by John Allspaw and Jesse Robbins
[Cross-posting last book summary I put out on LinkedIn.]
I found Web Operations (http://www.amzn.com/1449377440) to be a very informative and helpful book. The structure is a little unusual in that it is essentially a series of essays by different people on various topical aspects of web operations. However, what this approach loses in consistency of tone and organization is amply made up by the diversity of perspectives from the many thought leaders who contributed to the content.
The best chapters to me were:
3 - Infrastructure and Application Metrics
4 - Continuous Deployment
6 - Monitoring
7 - How Complex Systems Fail
10 - Dev and Ops Collaboration and Cooperation
12 - Relational Database Strategy
15 - Nonrelational Databases
17 - Things That Go Bump in the Night
That said, I found something of value in each chapter and mileage will likely vary with what chapters resonate most to different readers based on their specific interests and needs.