Apache BookKeeper, a scalable, fault-tolerant, and low-latency storage service optimized for real-time workloads, has been widely adopted by enterprises like Twitter, Yahoo, and Salesforce to serve several use cases, such as building high-availability or replication facilities for distributed systems (the HDFS NameNode and Twitter’s Manhattan key-value store), providing replication between machines in a single cluster and also across clusters (multi-data-center replication), serving as a store for publish/subscribe (pub/sub) messaging systems, such as Twitter’s EventBus and Apache Pulsar (incubating), and storing immutable objects for streaming jobs (E.G., snapshots of checkpointed data).
Apache DistributedLog—which has graduated from the Apache Incubator and to become a subproject of Apache BookKeeper—extends BookKeeper from low-level ledger API to a simpler, high-level stream API and simplifies the usage of BookKeeper. Sijie Guo walks you through the Stream Storage API in Apache BookKeeper, explains why Apache BookKeeper is so unique for being a real-time storage system, and demonstrates how it is used in an end-to-end real-time solution.
Sijie Guo is the PMC chair of Apache BookKeeper and the PMC member of Apache Pulsar. He worked at Twitter before and led the messaging team. Prior to Twitter, he worked on Yahoo! push notification infrastructure.
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