If we rewrite our backend for better performance, what will we use?

Kind of a continuation of https://manifold.markets/Austin/what-database-will-manifold-be-prim . Conditional on us starting on a more performant (eg 2x speed improvement?) implementation of trading, what will that be built on? If the condition is met, will resolve to my subjective assessment of how important each piece of the backend is. If I were to resolve it today, I'd put it at 60% Firestore, 30% Firebase Cloud Functions, 10% Vercel Serverless Functions (but happy to hear arguments for other weights) Some context: [James] One thing Marshall and I were discussing last week was that we might want to migrate the trading system first to another DB and then run that side-by-side with firebase before migrating everything else I still think we would prefer to prioritize getting the mechanisms right for our different market types, e.g. limit orders, numeric, fixed multiple choice and free response markets But another idea would be to build the new Free Response directly on the other db [Marshall] so maybe 1. get limit orders in 2. say that binary markets are basically "done" and start prototyping binary markets on fast DB [Austin] incidentally, I would strongly want Backend v2 to support txns out-of-the-box uh a globally queryable table of every movement of any token (M$, shares, NFTs, etc) between any two parties (users, smart contracts, charities, bank of manifold) which is the ultimate source-of-truth and then also can be used to reconstruct the full history of Manifold Jul 1, 2:37pm: Resolves to N/A if we haven't chosen a path forward by market close time

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