Why we build realtime-first on Convex
Live data used to be a premium feature. Here’s how a reactive backend changed what we promise clients — and what it costs.
Read articleBalances are derived, not stored
Storing a balance and updating it in place is how money goes missing. A ledger stores immutable entries; balances are computed from them.
Every movement has two sides
Money never appears or disappears — it moves between accounts. Recording both sides makes errors visible immediately.
Reconciliation becomes boring
With a proper ledger, matching against the bank is a query, not a quarterly fire drill.
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