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Power of the Log:LSM & Append Only Data Structures

This talk is about the beauty of sequential access and append only data structures. We'll do this in the context of a little known paper entitled “Log Structured Merge Trees”. LSM describes a surprisingly counterintuitive approach to storing and accessing data in a sequential fashion. It came to prominence in Google's Big Table paper and today, the use of Logs, LSM and append only data structures drive many of the world's most influential storage systems: Cassandra, HBase, RocksDB, Kafka and more. Finally we'll look at how the beauty of sequential access goes beyond database internals, right through to how applications communicate, share data and scale.


Benjamin Stopford

Author of “Designing Event Driven Systems” & Senior Director @confluentinc

Ben is a Senior Director at Confluent (a company that backs Apache Kafka) where he runs the Office of the CTO. He's worked on a wide range of projects from implementing the latest version of Kafka’s replication protocol through to assessing and shaping Confluent's strategy. His...

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Windsor, 5th flr.


Modern CS in the Real World


Computer ScienceDatabase ReplicationStreamingInterview Available


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