On Signal and Noise

Penelope* (not her real name) is an Instagram influencer. Companies sometimes pay her, in cash or in kind, to promote their products, hoping she will somehow influence those who follow her online into buying their products. How do companies decide Penelope is worth courting? Her follower count. There’s just one problem: it’s… Read More

Google Share Details on Their Datacentre Network Evolution

On Tuesday at the ACM SIGCOMM 2015 conference in London, Google shared details, and I do mean details, on the way their internal datacentre networks are (or at least were) constructed. In a paper titled Jupiter Rising: A Decade of Clos Topologies and Centralized Control in Google’s Datacenter Network [PDF] the authors describe how… Read More