Networking

A highly resilient architectural design for a Google-scale web crawler; heavily focusing on breadth-first search (BFS), extensive DNS resolution caching, and polite handling of malicious domains.

A comprehensive system architecture for migrating remarkably large datasets; rigorously enforcing deduplication heuristics, checksum-backed integrity validations, resumability, and strict idempotence.

A robust edge-optimized CDN-backed media delivery architecture; designed explicitly for seamless, highly available global media serving with completely decoupled background upload processing.

A highly effective, local-first email auditing and automated cleanup tool designed to definitively identify noisy senders and deliver actionable, strictly privacy-preserving recommendations.

Operational guidance for resilient networked services; detailing robust API contracts, exponential retries with jitter, sliding-window rate limiting, strict timeout budgets, connection pooling, and mutual TLS.

A robust Java-based tool engineered for seamlessly organizing and migrating extensive photo collections; featuring rigorous deduplication, automatic metadata preservation, and resumable execution.

A real-time synchronization design for collaborative applications (e.g., Google Docs, Figma); utilizing WebSockets and Operational Transformation (OT) or CRDTs for consistent state resolution.

Design patterns for reliable microservice behavior under load; implementing strict request idempotency, non-blocking async I/O, robust circuit breakers, durable background queues, and observability.

A robust structural design for a highly available, extremely read-heavy service bridging short aliases to long URLs; implementing Base62 encoding, Snowflake IDs, and strict collision avoidance.