Click Below to Get the Code

Browse, clone, and build from real-world templates powered by Harper.
Solution
GitHub Logo

Modern Web Platform for Latency-Sensitive Applications

Harper is a unified, globally distributed web platform that combines database, cache, messaging, and application logic into a single runtime, eliminating the complexity of traditional multi-service stacks. Designed for latency-sensitive applications, it delivers ultra-low-latency performance, massive scalability, and seamless global synchronization—all in one simplified, developer-friendly architecture.
Solution

Modern Web Platform for Latency-Sensitive Applications

By
Harper
July 15, 2025
By
Harper
July 15, 2025
By
Harper
July 15, 2025
July 15, 2025
Harper is a unified, globally distributed web platform that combines database, cache, messaging, and application logic into a single runtime, eliminating the complexity of traditional multi-service stacks. Designed for latency-sensitive applications, it delivers ultra-low-latency performance, massive scalability, and seamless global synchronization—all in one simplified, developer-friendly architecture.
Harper

The Problem

Today’s SaaS platforms are buried under layers of infrastructure: separate services for databases, caches, queues, APIs, and edge delivery. It’s complex, brittle, expensive, and slow to evolve.

Harper’s Paradigm Shift

Harper integrates the database, cache, messaging, and application functions into a single runtime designed for deployment and synchronization across regions. The distributed yet unified architecture creates highly efficient services that deliver extremely high-throughput at ultra-low-latency. Creating easy-to-manage services that can scale to efficiently manage 100s of terabytes of data. 

  • Unified Architecture – One binary handles data, caching, messaging, and logic, simplifying development.
  • Distributed by Design – Deploy globally and synchronize data across regions in milliseconds. 
  • Higher Throughput by Design – Harper eliminates network hops and intermediary serialization steps, freeing bandwidth for more RPS with less overhead.
  • Low-Latency In-Process APIs – Access your data directly through REST, GraphQL, or custom endpoints, running inside the same process as your persistent and in-memory data stores.
  • Boilerplate Code Eliminated – Define data schemas with an @export directive to auto-generate REST and real-time endpoints (MQTT, WebSocket). 
  • Real-Time Native – Data updates instantly trigger messages, no separate broker or handler required.

Proven Impact

  • 10× - 250× faster performance
  • 40% - 90%  lower costs
  • $100 Billion in annual digital commerce revenue relies on Harper today.
  • Example Deployment: Pre-rendered product page delivery at scale - 26K RPS with 1.36 millisecond p95 Harper duration.

Why It Matters

Performance isn’t a luxury—it’s a growth engine. Harper reduces latency and complexity, unlocking a better user experience, faster development, and higher throughput. With fewer layers, teams ship faster, operations stay lean, and every interaction feels instant. The result: lower infrastructure costs, happier users, and accelerated revenue.

This is how the modern web should work.

The Problem

Today’s SaaS platforms are buried under layers of infrastructure: separate services for databases, caches, queues, APIs, and edge delivery. It’s complex, brittle, expensive, and slow to evolve.

Harper’s Paradigm Shift

Harper integrates the database, cache, messaging, and application functions into a single runtime designed for deployment and synchronization across regions. The distributed yet unified architecture creates highly efficient services that deliver extremely high-throughput at ultra-low-latency. Creating easy-to-manage services that can scale to efficiently manage 100s of terabytes of data. 

  • Unified Architecture – One binary handles data, caching, messaging, and logic, simplifying development.
  • Distributed by Design – Deploy globally and synchronize data across regions in milliseconds. 
  • Higher Throughput by Design – Harper eliminates network hops and intermediary serialization steps, freeing bandwidth for more RPS with less overhead.
  • Low-Latency In-Process APIs – Access your data directly through REST, GraphQL, or custom endpoints, running inside the same process as your persistent and in-memory data stores.
  • Boilerplate Code Eliminated – Define data schemas with an @export directive to auto-generate REST and real-time endpoints (MQTT, WebSocket). 
  • Real-Time Native – Data updates instantly trigger messages, no separate broker or handler required.

Proven Impact

  • 10× - 250× faster performance
  • 40% - 90%  lower costs
  • $100 Billion in annual digital commerce revenue relies on Harper today.
  • Example Deployment: Pre-rendered product page delivery at scale - 26K RPS with 1.36 millisecond p95 Harper duration.

Why It Matters

Performance isn’t a luxury—it’s a growth engine. Harper reduces latency and complexity, unlocking a better user experience, faster development, and higher throughput. With fewer layers, teams ship faster, operations stay lean, and every interaction feels instant. The result: lower infrastructure costs, happier users, and accelerated revenue.

This is how the modern web should work.

Harper is a unified, globally distributed web platform that combines database, cache, messaging, and application logic into a single runtime, eliminating the complexity of traditional multi-service stacks. Designed for latency-sensitive applications, it delivers ultra-low-latency performance, massive scalability, and seamless global synchronization—all in one simplified, developer-friendly architecture.

Download

White arrow pointing right
Harper is a unified, globally distributed web platform that combines database, cache, messaging, and application logic into a single runtime, eliminating the complexity of traditional multi-service stacks. Designed for latency-sensitive applications, it delivers ultra-low-latency performance, massive scalability, and seamless global synchronization—all in one simplified, developer-friendly architecture.

Download

White arrow pointing right
Harper is a unified, globally distributed web platform that combines database, cache, messaging, and application logic into a single runtime, eliminating the complexity of traditional multi-service stacks. Designed for latency-sensitive applications, it delivers ultra-low-latency performance, massive scalability, and seamless global synchronization—all in one simplified, developer-friendly architecture.

Download

White arrow pointing right

Explore Recent Resources

Tutorial
GitHub Logo

Real-Time Pub/Sub Without the Stack

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.
Harper Learn
Tutorial
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.
A man with short dark hair, glasses, and a goatee smiles slightly, wearing a black shirt in front of a nature background.
Ivan R. Judson, Ph.D.
Distinguished Solution Architect
Tutorial

Real-Time Pub/Sub Without the Stack

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.
Ivan R. Judson, Ph.D.
Jan 2026
Tutorial

Real-Time Pub/Sub Without the Stack

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.
Ivan R. Judson, Ph.D.
Tutorial

Real-Time Pub/Sub Without the Stack

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.
Ivan R. Judson, Ph.D.
News
GitHub Logo

Harper Recognized on Built In’s 2026 Best Places to Work in Colorado Lists

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.
Announcement
News
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.
Colorful geometric illustration of a dog's head resembling folded paper art in shades of teal and pink.
Harper
News

Harper Recognized on Built In’s 2026 Best Places to Work in Colorado Lists

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.
Harper
Jan 2026
News

Harper Recognized on Built In’s 2026 Best Places to Work in Colorado Lists

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.
Harper
News

Harper Recognized on Built In’s 2026 Best Places to Work in Colorado Lists

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.
Harper
Comparison
GitHub Logo

Harper vs. Standard Microservices: Performance Comparison Benchmark

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.
Comparison
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.
Person with short dark hair and moustache, wearing a colorful plaid shirt, smiling outdoors in a forested mountain landscape.
Aleks Haugom
Senior Manager of GTM & Marketing
Comparison

Harper vs. Standard Microservices: Performance Comparison Benchmark

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.
Aleks Haugom
Dec 2025
Comparison

Harper vs. Standard Microservices: Performance Comparison Benchmark

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.
Aleks Haugom
Comparison

Harper vs. Standard Microservices: Performance Comparison Benchmark

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.
Aleks Haugom
Tutorial
GitHub Logo

A Simpler Real-Time Messaging Architecture with MQTT, WebSockets, and SSE

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.
Harper Learn
Tutorial
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.
A man with short dark hair, glasses, and a goatee smiles slightly, wearing a black shirt in front of a nature background.
Ivan R. Judson, Ph.D.
Distinguished Solution Architect
Tutorial

A Simpler Real-Time Messaging Architecture with MQTT, WebSockets, and SSE

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.
Ivan R. Judson, Ph.D.
Dec 2025
Tutorial

A Simpler Real-Time Messaging Architecture with MQTT, WebSockets, and SSE

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.
Ivan R. Judson, Ph.D.
Tutorial

A Simpler Real-Time Messaging Architecture with MQTT, WebSockets, and SSE

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.
Ivan R. Judson, Ph.D.
Podcast
GitHub Logo

Turn Browsing into Buying with Edge AI

Discover how Harper’s latest features streamline development, boost performance, and simplify integration. This technical showcase breaks down real-world workflows, powerful updates, and practical tips for building faster, smarter applications.
Select*
Podcast
Discover how Harper’s latest features streamline development, boost performance, and simplify integration. This technical showcase breaks down real-world workflows, powerful updates, and practical tips for building faster, smarter applications.
Person with short hair wearing a light blue patterned shirt, smiling widely outdoors with blurred greenery and trees in the background.
Austin Akers
Head of Developer Relations
Podcast

Turn Browsing into Buying with Edge AI

Discover how Harper’s latest features streamline development, boost performance, and simplify integration. This technical showcase breaks down real-world workflows, powerful updates, and practical tips for building faster, smarter applications.
Austin Akers
Dec 2025
Podcast

Turn Browsing into Buying with Edge AI

Discover how Harper’s latest features streamline development, boost performance, and simplify integration. This technical showcase breaks down real-world workflows, powerful updates, and practical tips for building faster, smarter applications.
Austin Akers
Podcast

Turn Browsing into Buying with Edge AI

Discover how Harper’s latest features streamline development, boost performance, and simplify integration. This technical showcase breaks down real-world workflows, powerful updates, and practical tips for building faster, smarter applications.
Austin Akers