You’ve likely seen Facebook announcement of it’s new Messaging system. They now also have a blog about The Underlying Technology of Messages. And Todd Hoff is dissecting the blog article and adding some context in Facebook’s New Real-time Messaging System: HBase to Store 135+ Billion Messages a Month. This is just crazy. I wonder how many servers they have for the DB, or rather how fast it’s going to scale, and it’s probably better to measure how many servers they’ll need by terabyte of data managed, since it’s going to increase so quickly!