Java / Rust Backend Developer
I work across Rust infrastructure, Java services, and AI knowledge systems. This portfolio now focuses on the systems, constraints, and measurable outcomes behind the projects.
About
I build high-concurrency backend systems, Rust infrastructure, and AI knowledge applications. My work spans monorepo collaboration, coupon distribution, and production LLM Q&A systems, with a focus on reliable data flow, queueing, caching, and measurable performance.
Each project is presented by the constraint it solves: code collaboration, high-concurrency coupon delivery, or reliable LLM question answering.
Open-source monorepo collaboration infrastructure for Git, code review, and build workflows. I worked on commit history APIs, build triggers, merge queue flow, permission checks, diff rename detection, and code blame.
High-concurrency coupon platform covering seckill claiming, distribution, settlement, search, reservation storage, and delayed reminders. The cache-hit pressure test reached about 3.7k QPS with p95 latency around 2ms.
Production LLM Q&A platform for enterprise knowledge silos, combining parallel retrieval, query understanding, distributed queue limiting, model fallback, and SSE result streaming.
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