How do consensus algorithms work in distributed systems?

How do consensus algorithms work in distributed systems?

Consensus algorithms are protocols that help multiple nodes in a distributed system agree on a single data value or state. They ensure reliability and consistency despite failures.

What are some common types of consensus algorithms?

Some common types include Paxos, Raft, and Byzantine Fault Tolerance. Each has its own strengths and use cases.

Can you explain how the Raft algorithm works?

Sure! Raft is designed to be understandable and is used to manage a replicated log. It divides the consensus process into leader election, log replication, and safety.

What are the advantages of using consensus algorithms?

They provide fault tolerance, ensure data consistency, and allow for reliable communication in distributed systems.

Are there any drawbacks to using these algorithms?

Yes, they can introduce latency and complexity, and some algorithms may not scale well with a large number of nodes.