Xiang Zhang

Posts by Xiang Zhang

  • diagram-showing-the-architecture-of-identity-services

    How we reduced latency and cost-to-serve by merging two systems

    April 22, 2020

    Co-authors: Xiang Zhang, Estella Pham, and Ke Wu Identity services are critical systems that serve data on profile and member settings to help power many other applications at LinkedIn. In this blog post, we’ll share how we merged two layers of the identity services that handle more than half a million queries per second (QPS) that drove a 10% reduction in...

  • diagram-of-espressos-architecture

    How we improved latency through projection in Espresso

    March 5, 2020

    Co-authors: Xiang Zhang and Chuck Jerian Espresso is LinkedIn’s document-oriented, highly available, and timeline-consistent distributed datastore. Clients, such as services fetching profile data, read a subset fields of whole documents from Espresso in different use cases for reasons related to performance and costs. For example, one use case is reading only a...

  • profilehighlights1

    Rebuilding the Profile Highlights System at LinkedIn

    February 27, 2019

    LinkedIn’s mission is to connect the world’s professionals to make them more productive and successful. Building an active community of engaged members is a key strategy for achieving our mission. One of the many ways to drive member conversations and active communities is through profile highlights, which are insights between the viewer of a profile and that...