Case Study Breakdown•Fintech
Secure Distributed Transaction Middleware
A high-volume transactional engine built to handle ledger entries, balance reconciliations, and lock database connections safely during simultaneous API calls.
Target Challenges
- 01Simultaneous API transfer calls causing balance synchronization errors.
- 02Database locks blocking database queries, resulting in request timeouts.
- 03Insecure parameter inputs creating vulnerabilities to SQL injection attacks.
Engineering Solutions
- ✓We implemented distributed locks using Redis to ensure sequential updates.
- ✓We optimized the PostgreSQL database schema and connection pool size to handle peak concurrency.
- ✓We wrote query logic using parameterized inputs and conducted security scans.
Architectural Results
Outcome 01
Zero ledger parity mismatches during stress testing.
Outcome 02
Optimized query speeds to under 100 milliseconds for standard balance checks.
Outcome 03
Successful deployment of automatic token validation and logging across all backend servers.
Technologies Integrated
JavaSpring BootPostgreSQLRedisDockerAWS Aurora
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