Cloud Bits: Breaking the Double Write – A Guide to Distributed Data Consistency (opens in new tab)

Once you start dealing with cloud systems, you need to grapple with the reality that failure is a question of when & not if. Nodes go down, network is unreliable & even if everything goes as planned you have stop-the-world GC pause that can cause timeouts. In any application with some amount of complexity you will need to juggle multiple components of your application & will have to ensure that they have some form of consistent state. In this post we will try to understand the challenges arou...