Author: fde

ZippyDB is the largest strongly consistent, geographically distributed key-value store at Facebook. Since we first deployed ZippyDB in 2012, this key-value store has expanded rapidly, and today, ZippyDB serves a number of use cases, ranging from metadata for a distributed filesystem, counting events for both internal and external purposes, to product data that’s used for… Continue reading How we built a general purpose key value store for Facebook with ZippyDB

What the research is:  A first-of-its-kind study detailing our backbone management strategy to ensure high service performance throughout the COVID-19 pandemic. The pandemic moved most social interactions online and caused an unprecedented stress test on our global network infrastructure with tens of data center regions. At this scale, failures such as fiber cuts, router misconfigurations,… Continue reading Risk-driven backbone management during COVID-19 and beyond

Sales representatives deal with hundreds of emails everyday. To help them prioritize, Salesforce offers critical insights on emails received. These insights are either generated by our deep learning models or defined by the customer by matching keywords using regex expressions. Insights are generated in real time in our microservice architecture, which is built using Kafka… Continue reading Real-time Einstein Insights Using Kafka Streams

Facebook engineers have built and open-sourced an Open Compute Time Appliance, an important component of the modern timing infrastructure. To make this possible, we came up with the Time Card — a PCI Express (PCIe) card that can turn almost any commodity server into a time appliance. With the help of the OCP community, we… Continue reading Open-sourcing a more precise time appliance

We are excited to announce our participation in the Apricot subsea cable system, together with leading regional and global partners. When completed, the project (which is still subject to regulatory approvals) will deliver much-needed internet capacity, redundancy, and reliability to expand connections in the Asia-Pacific region. The 12,000-kilometer-long cable will connect Japan, Taiwan, Guam, the… Continue reading Apricot subsea cable will boost internet capacity, speeds in the Asia-Pacific region

What the research is:  RAMP-TAO is a new protocol that improves the developer experience on TAO, Facebook’s online social graph store, by providing stronger transactional guarantees. It is the first protocol to provide transactional semantics over an eventually consistent massive-scale data store while still preserving the system’s overall reliability and performance. RAMP-TAO enables an intuitive… Continue reading RAMP-TAO: Layering atomic transactions on Facebook’s online graph store

Problem The process for migrating from Helm v2 to v3, the latest stable major release, was pretty straightforward. However, while performing the migration, we encountered an anomaly with how one of the application charts had been deployed, thus introducing additional challenges. One of our application’s Helm v2 releases did not adhere to the standard naming… Continue reading How to Rename a Helm Release