Coding Polyglot Persistence Playbook: Mixing SQL and NoSQL Without Breaking Transactions in a Fintech Scaling to 10M Users Yoo plus 2026-09-06 When a fast-growing fintech crossed the 10,000-user mark, a single PostgreSQL cluster handled everything: accounts, transactions, fraud... Read More Read more about Polyglot Persistence Playbook: Mixing SQL and NoSQL Without Breaking Transactions in a Fintech Scaling to 10M Users
