Articles by tag: high-load

QR Ticket Validation Design for Cinemas

Breakdown of System Design for QR Ticket Validation: offline signature, idempotency, atomic updates. Solving timeouts and HoL blocking for high-load. Practical SQL examples.

Coexistence of legacy code in high-load systems

Learn why removing legacy code is risky and how to apply feature toggles for safe coexistence in Spring Boot. Strategies for middle/senior dev without refactoring risks. Practical examples.