About Me
Experience
Java Engineer
Unknown - - Now
职位: Java Engineer | 时间段: Unknown | 工作内容: Managed high-volume map data production with over 100 million concurrent requests per day. Implemented TDDL-based database sharding (4 databases × 32 tables) for 7-day data retention; stored compressed data in OSS and archived completed data via ETL to the big data platform for analysis. Utilized RocketMQ for peak load balancing and message persistence; layered message IDs using Redis buffer queues. Retrieved messages from queue and processed them via thread pools with automatic retry mechanisms to ensure eventual success. Used Zookeeper service discovery mechanism for dynamic node scaling. Adopted high-performance protobuf protocol for internal microservice communication.
Java Engineer
Unknown - - Now
职位: Java Engineer | 时间段: Unknown | 工作内容: Microservice architecture with load-balanced services and database sharding with active-active architecture. Leveraged Zookeeper for distributed coordination, service registration/discovery/election; used Dubbo for NIO-based synchronous inter-service communication with auto-retry on failure. Implemented asynchronous communication between services via RocketMQ, isolating temporary downstream failures and enabling auto-retry. Applied Sentinel for request rate limiting and degradation of non-critical modules. Utilized ElasticSearch for data query services. Monitored key system metrics including CPU, memory, I/O, connection count, QPS, response time, application error logs, and abnormal business data fluctuations. Secured data with AES/RSA encryption, cross-system single sign-on, and OAuth2 user authorization to prevent malicious attacks.
Java Engineer
Unknown - - Now
职位: Java Engineer | 时间段: Unknown | 工作内容: GPT-4o Integration: Classified user sentiment layers to filter out invalid tasks, reducing manual labor costs by 50% in mapping data operations. Meta SAM Model: Automated detection of green areas, forests, lakes, and other spatial features in satellite imagery, replacing 100% of manual labor. Qwen Multimodal Model: Recognized image content from satellite photos, vehicle images, traffic heatmaps, and current DB data to detect road changes and infer updated results, automatically generating map data. Status: In R&D phase aiming to fully automate map data generation.
Java Engineer
Unknown - - Now
职位: Java Engineer | 时间段: Unknown | 工作内容: Introduced a process orchestration engine that supports automated sequence-triggered task execution, with exception monitoring and auto-retry capabilities. Implemented a dynamic rule configuration service where input dimensions are combined in matrix form to generate different strategy outcomes.
