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Quorum Store: How Consensus Horizontally Scales on the Aptos Blockchain | by Aptos Labs | Aptos Labs | Medium

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Aptos Labs is thrilled to announce Quorum Store, the first deployed implementation of Narwhal. Quorum Store significantly improves consensus throughput by removing the leader bottleneck. Instead of relying on a single leader to broadcast big chunks of data as part of the consensus protocol, Quorum Store decouples data dissemination from metadata ordering, allowing validators to disseminate data asynchronously in parallel. Most currently deployed blockchains implement a leader-based consensus. In these protocols, a leader drives progress and is responsible for disseminating user transactions as part of consensus proposals. As a result, leaders’ resources are constantly over-utilized while the rest of the validators are mostly idle. This means that the overall system throughput is dictated by the leaders’ ability to broadcast data. Note that rotating leaders does not solve this problem as it only shifts the bottleneck from one leader to the next. As first observed in Narwhal, data dissem

Quorum Store: How Consensus Horizontally Scales on the Aptos Blockchain Aptos Labs 7 min read · May 1, 2023 -- Listen Share By Brian Cho and Alexander Spiegelman Press enter or click to view image in full size tl;dr Aptos Labs has launched Quorum Store, the first deployed implementation of Narwhal. Quorum Store significantly improves consensus throughput by removing the leader bottleneck. Quorum Store decouples data dissemination from metadata ordering, allowing validators to disseminate data asynchronously in parallel. Stress tests of Qurum Store show 12x and 3x TPS improvement in consensus-o

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