Jin Lian

Delivered SDN solutions for enterprise customers, including pushing control instructions using gRPC bidirectional streaming, routing computation via master-slave coordination, and cluster scalability evaluation. Standardized a common Go middleware library, reducing project initialization time from half a day to 10 minutes and refactoring ~80% of related code. Improved computation performance, reducing runtime from 10s to 1s+ at 1,000-node scale through profiling (pprof), concurrency tuning, and resource scheduling. Implemented end-to-end CI/CD pipelines using Huawei Cloud CodeArts, containerized services via Docker Compose and CCE, enabling faster, reliable automated delivery.

Developed logistics governance system, integrating 12+ upstream services, handling 200K+ asynchronous throughput across three data centers (3-IDC). Spearheaded a service refactor involving 5+ teams, achieving a zero-downtime migration. Reduced event processing latency 8h → 30min via pre-filtering, throttling, and load balancing. Strengthened payment pipeline with automated circuit breaking & reconciliation, achieving ~90% event detection coverage.

Led a 7-member backend team; migrated 100+ microservices to cloud with zero downtime. Ran distributed scheduling jobs for online tasks, used distributed locks handling concurrency and adopted BASE for distributed transactions. Designed resilient core services achieving 99.9% uptime and <50ms latency through caching, concurrency control, asynchronous processing, rate limiting, and service degradation strategies. Implemented real-time WebSocket push services for game events and live-room barrage, supporting up to ~10K concurrent connections with optimized connection lifecycle management and message fan-out. Owned VIP membership system (~10K new daily users); introduced JWT-like tokens & caching to cut DB load by 20 – 30K QPS.