Software Engineering Institute | Carnegie Mellon University
Software Engineering Institute | Carnegie Mellon University

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Presentation

Migrating from Oracle to Espresso

  • May 2018
  • By David Max (LinkedIn)518802
  • This talk describes how LinkedIn migrated its content ingestion platform, Babylonia, from Oracle to Espresso without affecting clients.
  • Publisher: Software Engineering Institute
  • This presentation was created for a conference series or symposium and does not necessarily reflect the positions and views of the Software Engineering Institute.
  • Abstract

    Espresso is LinkedIn's strategic distributed, fault-tolerant NoSQL database that powers many LinkedIn services. Espresso has a large production footprint at LinkedIn, with close to a hundred clusters in use, storing about 420 terabytes of source-of-truth (SoT) data and handling more than two million queries per second at peak load.

    This talk discusses our strategy for migrating one of our internal services (Babylonia) from using Oracle to using Espresso. We will present an overview of the Espresso platform and its quality attributes that motivated the migration, as well as the particulars of how we accomplished the migration. Our core requirement was to keep Babylonia running uninterrupted throughout the migration process. These same concerns are common to many database migrations, not only at LinkedIn. The talk covers the steps we took to keep the service running through the transition without affecting our clients.

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SATURN 2018 Presentations