早兩日嘅，講Centralized control + Distributed data architecture vs Fully distributed architecture:
http://highscalability.com/blog/2014/4/7/google-finds-centralized-control-distributed-data-architectu.html

今日嘅，講Microservices潛在問題:
http://highscalability.com/blog/2014/4/8/microservices-not-a-free-lunch.html

個人同意呢段:

Once we have distributed a system, we have to consider a whole host of concerns that we didn't before. Network latency, fault tolerance, message serialisation, unreliable networks, asynchronicity, versioning, varying loads within our application tiers etc.

想像下有一個Service係做User authentication，其它Services都會先靠佢黎Check user credentials，在繼續餘下嘅工作...

個人幾中意睇呢類文章，可能同興趣、工作有關。