Byzantine Fault Tolerance (Bft)
| Byzantine Fault Tolerance (BFT) is a property of computer systems that allows them to reach consensus despite the failure of some of their components. This is especially important in distributed systems, where there is no centralized authority to make decisions. In a BFT system, each node has a copy of the data, and they all communicate with each other to agree on the correct value. If some nodes fail, the others can still reach consensus. This makes the system very resilient to failures. There are many different algorithms that can be used to achieve BFT. Some of the most popular ones are Paxos and Raft. Paxos is a protocol for achieving consensus in a distributed system. It was originally proposed by Lamport in 1989. Paxos is a very elegant protocol, but it can be difficult to understand and implement. Raft is a newer consensus algorithm that was designed to be easier to understand and implement. Raft is based on the idea of leader election. There is a leader node in the system, and the other nodes follow it. If the leader fails, a new leader is elected. Raft is generally considered to be easier to understand and implement than Paxos. However, Paxos has some advantages over Raft. Paxos is more flexible, and it can be used in a wider range of settings. Both Paxos and Raft are very powerful tools for building distributed systems. They both have their own advantages and disadvantages. In the end, the choice of which algorithm to use depends on the specific needs of the system. |
Share this glosssary
