LinkedIn Communication Architecture

The document discusses LinkedIn's communication architecture and network updates service. It describes how LinkedIn built scalable communication platforms to support its large professional network. The system evolved from handling 0 to 22 million members. It uses Java, databases like Oracle and MySQL, application servers like Tomcat and Jetty, and technologies like ActiveMQ, Lucene and Spring. The communication service handles messages and email delivery while the network updates service distributes short-lived notifications across LinkedIn's various clients and services.