Node.js
Backend
Event-driven asynchronous JavaScript runtime for backend services and servers
5 projects using Node.js
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- JWT Authentication in Production: Access Tokens, Refresh Token Rotation & Revocation
Architecting secure stateless authentication: token structure, HTTP-only cookie storage against XSS/CSRF, automated rotation family tracking, and Redis blacklisting.
- Designing Secure Password Reset & OTP Verification: Timing Attacks, Rate Limits & State
Architecting bulletproof password recovery: secure token hashing, timing attack mitigation with timingSafeEqual, OTP brute-force limits, and single-use invalidation.
- CORS Deep Dive: Why the Browser Sends Preflight OPTIONS and How to Fix It
Demystifying Cross-Origin Resource Sharing: Same-Origin Policy, simple vs preflighted requests, credentials mode, and secure server headers.
- Reliable User Registration: Solving the Dual-Write Problem with Transactional Outbox
Preventing orphaned users and lost verification emails during network outages using the Transactional Outbox Pattern and asynchronous publishing.
- Building Resilience Against Third-Party Outages: Circuit Breakers & Exponential Backoff
Designing fault-tolerant distributed systems: Circuit Breaker states, exponential backoff with full jitter, graceful fallbacks, timeouts, and bulkheads.
- Docker & Kubernetes — From Containerization to Cluster Orchestration
A comprehensive developer guide exploring containerization internals, Docker vs VMs, multi-container Compose, and enterprise Kubernetes cluster orchestration.
- RESTful API vs GraphQL in Production: Trade-offs, N+1 Problem & Caching Reality
Detailed architectural comparison of REST and GraphQL: over/under-fetching, DataLoader batching, HTTP edge caching vs query parsing overhead.
- Designing Robust Payment Systems: Idempotency Keys, State Machines & Webhook Guarantees
Preventing double-charges, ensuring transactional integrity across gateways, distributed idempotency locks, webhook retries, and automated reconciliation.
- Secure File Upload Architecture: Direct S3 Presigned URLs & Magic Number Validation
Eliminating server bottlenecks via direct client-to-storage uploads, pre-signed URL generation, magic-byte sniffing, virus scanning, and asynchronous processing.
- Comprehensive Cache Architecture: Patterns, Invalidation, and High-Scale Pitfalls
Deep-dive into Cache-Aside, Write-Through, Write-Behind, Cache Stampede / Thundering Herd mitigation, and distributed Redis cluster strategies.
- Designing Robust Background Job Processing for Heavy Report Generation
Architecting asynchronous job queues, streaming database queries, memory-bounded processing, failure retries, and job status polling/notifications.
- Designing Video Upload & Adaptive Bitrate Streaming Pipelines (HLS/DASH)
System design for large video ingestion: chunked S3 uploads, async worker transcoding clusters with FFmpeg, HLS manifest generation, and CDN edge delivery.
- Designing a Scalable Real-Time Messaging Architecture Like WhatsApp
Architecting persistent WebSocket gateways, ephemeral message routing, Redis session registries, offline queues, and delivery status lifecycles.
- Professional AI-Assisted Engineering: From Chatting to Measurable Systems
A deep-dive guide to engineering repeatable, test-driven workflows with LLMs, context management, prompt engineering, and automated evaluation.
Related Certificates
- Backend Development using ASP.NET Core
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Last updated: August 19, 2026