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PlanetScale Blog

Consensus algorithms at scale: Part 2 - Rules of consensus

If you’re still catching up, you can find links to each article in the series at the bottom of this article. The Rules of Consensus YouTube Scale When we were running Vitess at YouTube, there were tens of thousands of nodes serving very high QPS. The scale out was in all dimensions: some of the shards had over fifty replicas. The topology was complicated with these nodes being spread out across multiple data centers. To make this work, we had to strike a balance between latency, availability and

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