Jupiter Rising: A Decade of Clos Topologies and Centralized Control in Google’s Datacenter Network

Jupiter Rising: A Decade of Clos Topologies and Centralized Control in Google's Datacenter Network - Singh et. al (Google) 2015 Let's end the week with something completely different: a look at ten years and five generations of networking within Google's datacenters. Bandwidth demands within the datacenter are doubling every 12-15 months, even faster than the … Continue reading Jupiter Rising: A Decade of Clos Topologies and Centralized Control in Google’s Datacenter Network

FastRoute: A scalable load-aware anycast routing architecture for modern CDNs

FastRoute: A scalable load-aware anycast routing architecture for modern CDNs - Flavel et al. 2015 This is the story of how a team at Microsoft redesigned their CDN that supports 'numerous popular online services.' It's also a great example of mature systems thinking: the team deliberately eschew designs that would give marginally better performance at … Continue reading FastRoute: A scalable load-aware anycast routing architecture for modern CDNs

The Design and Implementation of Open vSwitch

The Design and Implementation of Open vSwitch - Pfaff et al. 2015 Another selection from this month's NSDI 2015 programme, this time from the operational systems track. What inspired the creation of Open vSwitch? What has most influenced its design? And what's next? As virtualized (or containerized) workloads grew, physically provisioning networks to support them … Continue reading The Design and Implementation of Open vSwitch

Taming uncertainty in distributed systems with help from the network

Taming uncertainty in distributed systems with help from the network - Leners et al. 2015 Albatross is a membership service with a very interesting new twist: it exploits SDN functionality to actively enforce partitions! Perhaps it is not immediately obvious why that might be a good thing :). It turns out there are several benefits: … Continue reading Taming uncertainty in distributed systems with help from the network