Museum of Weird Bugs: Our Favorites From 8 Years of Service Mesh Debugging - Alex Leong, Buoyant
Alex Leong, Buoyant
KubeCon + CloudNativeCon Europe 2025 · Session
In this insightful talk, Alex Leong, a long-standing maintainer of the Linkerd project at Buoyant, takes attendees on a journey through the "Museum of Weird Bugs." Leong shares some of the most challenging and elusive bugs encountered over eight years of developing and debugging Linkerd, a widely adopted **service mesh**. Far from being trivial, these bugs highlight the inherent complexities and unexpected interactions that arise when multiple distributed systems—Kubernetes, network protocols, custom resources, and application logic—converge.
AI review
This talk is a brutal, honest look into the reality of maintaining critical infrastructure at scale. Leong dissects two complex, real-world bugs from Linkerd's history, revealing how subtle architectural mismatches and fundamental misunderstandings of network protocols can lead to catastrophic system failures. It's a masterclass in distributed systems debugging and resilient design, offering invaluable, hard-won lessons that every engineer building cloud-native applications needs to internalize. This isn't just theory; it's battle-tested wisdom from the trenches.