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Solving the Distributed Snapshot Problem

Explore the Chandy-Lamport algorithm that addresses the distributed snapshot problem by capturing consistent global states. Understand how marker messages coordinate state recording across nodes and channels, helping you grasp event ordering and causality in distributed systems.

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Chandy-Lamport algorithm

The Chandy Lamport algorithm solves the consistent snapshot problem in a distributed system.

Idea

The algorithm is based on the following main idea: a marker message is sent between nodes using the available communication channels that represent an instruction to a node to record a snapshot of the current state.

Working

The algorithm works as follows:

  • The node that initiates the protocol records its state and then sends a marker message to all the outbound channels.
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