During March 2025, this developer focused on backend stability and performance across the labring/FastGPT and infiniflow/ragflow repositories. They resolved a MongoDB GridFS streaming issue in FastGPT by redesigning the buffer concatenation logic in Node.js, which improved large-file read throughput and eliminated service hangs. In ragflow, they stabilized Aliyun OSS backend configuration by refining environment-specific initialization in Python, reducing startup errors. Additionally, they enhanced the get_by_id method with targeted exception handling and optimized queries to prevent index errors. Their work demonstrated depth in backend development, configuration management, and error handling, resulting in more reliable deployments and smoother user experiences.