FastAPI + React JS App With Harper

Learn why a multi-tier caching strategy combining a CDN and mid-tier cache delivers better ROI. Discover how deterministic caching, improved origin offload, lower tail latency, and predictable costs outperform a CDN-only architecture for modern applications.

Explore a real-time pub/sub architecture where MQTT, WebSockets, Server-Sent Events, and REST work together with persistent data storage in one end-to-end system, enabling real-time interoperability, stateful messaging, and simplified service-to-device and browser communication.

Join Debbie O’Brien on the Select * Podcast as she shares insights on open source, and developer experience, and family.

Harper is honored as a Built In 2026 Best Startup to Work For and Best Place to Work in Colorado, recognizing its people-first culture, strong employee experience, and values of accountability, authenticity, empowerment, focus, and transparency that help teams thrive and grow together.

A detailed performance benchmark comparing a traditional microservices architecture with Harper’s unified runtime. Using a real, fully functional e-commerce application, this report examines latency, scalability, and architectural overhead across homepage, category, and product pages, highlighting the real-world performance implications between two different styles of distributed systems.

Learn how to build a unified real-time backbone using Harper with MQTT, WebSockets, and Server-Sent Events. This guide shows how to broker messages, fan out real-time data, and persist events in one runtime—simplifying real-time system architecture for IoT, dashboards, and event-driven applications.