Akka Articles

  • realtimepresence-1

    Now You See Me, Now You Don’t: LinkedIn’s Real-Time Presence Platform

    January 12, 2018

    Co-authors: Akhilesh Gupta and Meng Lay   Have you ever wondered how those green online indicators (or “presence indicators”) that are so pervasive in every instant messaging application and social network actually work? How does one display them in real time for roughly 500 million members on a social network like LinkedIn? In this post, we’ll provide a...

  • InstantMessaging

    Instant Messaging at LinkedIn: Scaling to Hundreds of Thousands of Persistent Connections on One Machine

    October 24, 2016

    Coauthor: Cliff Snyder We recently introduced Instant Messaging on LinkedIn, complete with typing indicators and read receipts. To make this happen, we needed a way to push data from the server to mobile and web clients over persistent connections instead of the traditional request-response paradigm that most modern applications are built on. In this post, we’ll...