Consensus Mechanism

The consensus mechanism of the two blockchains has the difference that makes Sui and Aptos unique.

For Sui - Sui Name service

With the advent of object-centric global storage, Sui bypasses consensus for owned objects, resulting in very low latency for transactions simply because customers receive confirmation of finality right away. immediately, eliminating the concept of block time. However, this also means that the sender can only send one transaction at a time.

On the other hand, Sui uses Narwhal and Tusk DAG based mempool and Byzantine Fault Tolerance consensus mechanism for more complex transactions involving shared objects.

In addition, with the asynchronous consensus mechanism, applications on Sui will limit DDoS attacks.

(DDoS stands for Distributed Denial of Service, a DDoS attack is an attempt to bring down an online service by flooding it with traffic from multiple sources.)

For Aptos

Aptos uses BlockSTM technology and the Byzantine Fault Tolerance (BFT) consensus mechanism.

The Byzantine Fault Tolerance (BFT) consensus mechanism solves the problem of a blockchain network working as it should and achieving correct consensus. This means that the BFT system can continue to function even if some nodes fail.

BlockSTM: is a consensus mechanism developed from Hotstuff and is also a semi-synchronous mechanism different from Sui's asynchronous mechanism