[ithrow]

I don't how they do it, but the obvious answer is probably sharding. Their cloud costs must be no joke. Peers require tons of memory and I can only guess they must have thousands of transactors to support that workload and who knows how many peers. Add to this that they probably need something like Kafka for integrating/pipelining all this data.

[outworlder]

> Peers require tons of memory

As do most distributed databases. Even when you don't store your entire database (or working set) in memory, you'll likely still have to add quite a bit of memory to be used as I/O cache.