Deep Dives21 min read
Database Architecture for Payment Platforms: ACID, Sharding, and Read Replicas
For platform payments, your first database decision is boundary-setting. Decide which paths in your system must stay exact and current in the **relational core**, and which can tolerate delay through read replicas, sharding, or distributed options. If you let money-critical reads and writes drift from the source of truth, risk rises fast.
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