Valkey After the Fork: A Conversation with Madelyn Olson

Valkey After the Fork: A Conversation with Madelyn Olson

Author: Software Huddle July 16, 2025 Duration: 1:21:14
Today, we're talking Valkey, Redis, and all things caching. Our guest is Madelyn Olson, who is a principal engineer at AWS working on Elasticache and is one of the most well-known people in the caching community. She was a core maintainer of Redis prior to the fork and was one of the creators of Valkey, an open-source fork of Redis. In this episode, we talk about Madelyn's road to becoming a Redis maintainer and how she found out about the March 2024 license change. Then, Madelyn shares the story of Valkey being created, philosophical differences between the projects, and her reaction to re-relicensing of Redis in May 2025. Next, we dive into the performance improvements of recent Valkey releases, including the I/O threads improvements and the new hash table layout. Along the way, Madelyn dispels the notion that the single-threaded nature of Redis / Valkey is that big of a hindrance for most workloads. Finally, she compares some of the Valkey improvements to some of the other recent cache competitors in the space.

Every week on Software Huddle, Alex DeBrie and Sean Falconer sit down with a different expert from across the tech landscape. The conversations are less about quick tips and more about substantive discussions, digging into the real challenges and decisions behind building software, launching products, and navigating the industry's constant shifts. You'll hear from practitioners who have been in the trenches, offering perspectives that blend deep technical knowledge with hard-won business and entrepreneurial experience. Alex brings his specialized expertise as the author of The DynamoDB Book and an AWS Data Hero, while Sean contributes a unique viewpoint shaped by over two decades as an engineer, founder, and marketing executive, recognized as a Snowflake Data Superhero. Together, they create a space where complex topics in software development and technology trends become accessible and genuinely engaging. This podcast is for anyone who wants to move beyond surface-level news and understand the "why" behind the tools and strategies shaping our digital world. Tune in for a thoughtful huddle that feels more like a candid conversation between colleagues than a formal interview.
Author: Language: en-us Episodes: 79

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