Advanced Node.js and TypeScript Architecture

Module 5: Performance engineering for modern web applications

• Performance as a system property across browser, network, server, and datastore layers
• Measuring meaningful signals latency, throughput, tail behavior, and user perceived responsiveness
• SSR and API performance tradeoffs caching, precomputation, payload shaping, and concurrency limits
• Backend hot path analysis event loop pressure, serialization cost, memory pressure, and queue buildup

Module 6: Profiling and optimization workflows

• Profiling Node.js services with CPU, heap, and async diagnostics
• Detecting memory leaks, long tasks, and hidden blocking behavior
• Efficient I O strategies batching, streaming, connection reuse, and backpressure
• Building a repeatable workflow measure, isolate, change, verify, and document

Module 7: Security as an architectural concern

• Threat modeling across frontend, BFF, APIs, and real time channels
• Authentication and authorization architecture session, token, delegation, and boundary enforcement
• Secure defaults for data validation, serialization, secrets, and transport
• Dependency and supply chain controls for modern JavaScript and TypeScript ecosystems

Module 8: Operational quality and resilient delivery

• Reliability patterns graceful degradation, idempotency, rate limits, and circuit breakers
• Observability for distributed web systems logs, traces, metrics, and correlation across layers
• Release safety progressive delivery, feature flags, rollback strategy, and blast radius control
• Architecture review checklists for testing, performance, security, and long term maintainability