Maglev: A Fast and Reliable Software Network Load Balancer
Maglev is Google’s network load balancer. It is a large distributed software system that runs on commodity Linux servers. Unlike traditional hardware network load balancers, it does not require a specialized physical rack deployment, and its capacity can be easily adjusted by adding or removing servers. Network routers distribute packets evenly to the Maglev machines via Equal Cost Multipath (ECMP); each Maglev machine then matches the packets to their corresponding services and spreads them evenly to the service endpoints. To accommodate high and ever-increasing traffic, Maglev is specifically optimized for packet processing performance. A single Maglev machine is able to saturate a 10Gbps link with small packets. Maglev is also equipped with consistent hashing and connection tracking features, to minimize the negative impact of unexpected faults and failures on connection-oriented protocols. Maglev has been serving Google’s traffic since 2008. It has sustained the rapid global growth of Google services, and it also provides network load balancing for Google Cloud Platform.
Something we argued for quite a lot in Amazon, back in the day….(tags: google paper scale ecmp load-balancing via:conall maglev lbs)
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BrewDog releases their beer recipes for free. so cool! ‘So here it is. The keys to our kingdom. Every single BrewDog recipe, ever. So copy them, tear them to pieces, bastardise them, adapt them, but most of all, enjoy them. They are well travelled but with plenty of miles still left on the clock. Just remember to share your brews, and share your results. Sharing is caring.’
(tags: brewing homebrew beer brewdog open-source free sharing)
National Children’s Science Centre due to open in 2018
Good for science fans, not so hot for real tennis fans.
The former real tennis court building close to the concert hall’s north wing would be used for temporary and visiting exhibitors, with a tunnel connecting it to the science centre. The National Children’s Science Centre is due to open in late 2018 and will also be known as the Exploration Station, said Dr Danny O’Hare, founding president of Dublin City University and chairman of the Exploration Station board since 2006.
(tags: real-tennis tennis nch dublin science kids planetarium)