February 2026 – NexaAI/nexa-sdk monthly summary. Focused on improving model distribution reliability and scalability. Delivered resumable downloads for the model hub with binary chunk markers, enabling users to resume interrupted downloads with robust progress tracking. Introduced persistent chunk markers and a binary marker format to support concurrent writes and migration from JSON, laying groundwork for future migrations and performance improvements. Refactored the runner to adopt the binary marker format. Added comprehensive tests around the resumable download flow. These changes reduce failed transfers, speed up model distribution, and improve maintainability by moving from JSON to a binary marker format.