Mark Little provides advice on when it is not recommended to use transactions and how to use transactions with Web Services, NoSQL, REST and mobile infrastructures.
Sean Cribbs compares ACID with BASE, explaining the virtues and tradeoffs of eventually consistent systems and what developers should know in order to feel comfortable working with EC systems.
Jags Ramnaraya presents SQLFire and how SQL can be used for modern data stores backing online highly scalable applications by using a different consistency model and sharing nothing persistence.
Justin Sheehy explains the principles behind concurrent distributed systems: no global state, no ACID but rather BASE, no RPC but protocols over APIs, prepare for failure, degradation, measurement.
Gregor Hohpe of Google discusses software as connecting services and components, describes the constraints of connected systems design, and presents common design patterns to solve those constraints.