ESPRESSO Articles

  • Solving Espresso‚Äôs scalability and performance challenges to support our member base

    September 7, 2023

    Espresso is the database that we designed to power our member profiles, feed, recommendations, and hundreds of other Linkedin applications that handle large amounts of data and need both high performance and reliability. As Espresso continued to expand in support of our 950M+ member base, the number of network connections that it needed began to drive...

  • Upscaling LinkedIn's Profile Datastore While Reducing Costs

    May 9, 2023

    Co-Authors: Estella Pham and Guanlin Lu At peak, LinkedIn serves over 4.8 million member profiles per second. The number of requests to our storage infrastructure doubles every year. In the past, we addressed latency, throughput and cost issues by migrating off Oracle onto Espresso, an open-source document platform, and adding more nodes. We are now at the point...

  • Jhubbub-on-Helix-making-stateless-and-elastic-easy

    Jhubbub on Helix: Stateless and elastic made easy

    August 27, 2020

    Co-authors: Hunter Lee and Dru Pollini LinkedIn was built to help professionals achieve more in their careers, and every day millions of people use our products to make connections, discover new opportunities and get better at what they do. An important part of our mission is helping people to find other professionals who are interested in the same things they...

  • chart-showing-the-state-transition-timing

    Improving Espresso availability with preemptive...

    August 11, 2020

    Co-authors: Gaurav Mishra, Song Lu, Antony Curtis, Shuangyang Yang Espresso is LinkedIn's horizontally scalable, highly-available, and...

  • The impact of slow NFS on data systems

    June 23, 2020

    Espresso is LinkedIn's defacto NoSQL database solution. It is an online, distributed, fault-tolerant database that powers most of...

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

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

    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...