WHITE PAPER

How To Resolve Network Partitions In Seconds With Lightbend Enterprise Suite

Strategies To Seamlessly Recover From Split Brain Scenarios

Audience: Architects, Managers

Technical level: Introductory

Networks are inherently flaky. Most users are aware of this and even accustomed to it, and are willing to handle random unresponsiveness from time to time. However, this sort of tolerance for network flakiness has limits.

In the era of highly-distributed, real-time applications, network issues often result in so-called “split brain” scenarios, where a partition in an application cluster causes one or more nodes to suddenly, and mysteriously, become unresponsive. At best, this causes delays and error messages for your users; at worst, it causes data inconsistencies between distributed services, leading to cascading failures and expensive downtime.

In this white paper, we review the tricky, unavoidable nature of network partitions, and describe what kind of strategies are needed resolve split brain scenarios intelligently, in just seconds. Lightbend’s Split Brain Resolver (SBR) feature, part of Lightbend Reactive Platform’s commercial Enterprise Suite, offers four such strategies–called “Keep Majority”, “Static Quorum”, “Keep Oldest”, and “Keep Referee”–that automatically execute in a matter of seconds if and when network partitions occur.

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ABOUT AUTHOR(S)

About Lightbend

Lightbend (Twitter: @Lightbend) provides the leading Reactive application development platform for building distributed systems. Based on a message-driven runtime, these distributed systems, which include microservices and streaming fast data applications, can effortlessly scale on multi-core and cloud architectures. Many of the most admired brands around the globe are transforming their businesses with our platform, engaging billions of users every day through software that is changing the world. For more information on Lightbend, visit: lightbend.com