Large scale systems Designing Schemaless, Uber Engineering’s Scalable Datastore Using MySQL SmartStack: Service Discovery in the Cloud facebook engineering Wormhole pub/sub system: Moving data through space and time McDipper: A key-value cache for Flash storage Scaling memcache at Facebook Other engineering blogs Cherami: Uber Engineering’s Durable and Scalable Task Queue in Go uReplicator: Uber Engineering’s Robust Kafka Replicator Big Data, large scale architecture Observability at Twitter: technical overview, part I Observability at Twitter: technical overview, part II [Flying faster with Twitter Heron](https://blog.twitter.com/engineering/en_us/a/2015/flying-faster-with-twitter-heron.html