FinTech applications require a higher standard of software engineering. System correctness, transactional integrity, and data security must be embedded into the architecture from day one.
Key Architectural Considerations
- ACID-compliant relational databases (e.g. PostgreSQL) with immutability and ledger-style auditing.
- Strict API security: OAuth 2.0, mTLS, encryption at rest and in transit.
- Idempotent transaction execution to prevent double-spending or duplicate charges.
fintechsecurityarchitecturepostgresql
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