Click Below to Get the Code

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

Token Ban List

Harper's Token Ban List decentralizes token revocation across CDNs to prevent misuse.
Solution

Token Ban List

By
Harper
April 4, 2025
By
Harper
April 4, 2025
By
Harper
April 4, 2025
April 4, 2025
Harper's Token Ban List decentralizes token revocation across CDNs to prevent misuse.
Harper

Overview

Unauthorized account sharing and service misuse erode revenue and dilute the value proposition for paying customers. To avoid misuse in the era of expanding CDN strategies, multi-CDN token ban list solutions are required. 

Drive Subscriber Growth by Ensuring Fair Use 

Harper’s Token Ban List solution is an edge service that decentralizes token revocation and tracking processes to function across CDNs. It enables real-time awareness of compromised or already-in-use tokens worldwide while maintaining optimal user experience. Built to handle billions of tokens, Harper’s Token Ban List service ensures fair use while contributing to subscriber growth.

Getting Started

Ready to protect your service from misuse and strengthen your market position? Contact us to discuss your specific requirements and explore implementation options.

‍

Overview

Unauthorized account sharing and service misuse erode revenue and dilute the value proposition for paying customers. To avoid misuse in the era of expanding CDN strategies, multi-CDN token ban list solutions are required. 

Drive Subscriber Growth by Ensuring Fair Use 

Harper’s Token Ban List solution is an edge service that decentralizes token revocation and tracking processes to function across CDNs. It enables real-time awareness of compromised or already-in-use tokens worldwide while maintaining optimal user experience. Built to handle billions of tokens, Harper’s Token Ban List service ensures fair use while contributing to subscriber growth.

Getting Started

Ready to protect your service from misuse and strengthen your market position? Contact us to discuss your specific requirements and explore implementation options.

‍

Harper's Token Ban List decentralizes token revocation across CDNs to prevent misuse.

Download

White arrow pointing right
Harper's Token Ban List decentralizes token revocation across CDNs to prevent misuse.

Download

White arrow pointing right
Harper's Token Ban List decentralizes token revocation across CDNs to prevent misuse.

Download

White arrow pointing right

Explore Recent Resources

Blog
GitHub Logo

Why a Multi-Tier Cache Delivers Better ROI Than a CDN Alone

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.
Cache
Blog
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.
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
Blog

Why a Multi-Tier Cache Delivers Better ROI Than a CDN Alone

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.
Aleks Haugom
Jan 2026
Blog

Why a Multi-Tier Cache Delivers Better ROI Than a CDN Alone

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.
Aleks Haugom
Blog

Why a Multi-Tier Cache Delivers Better ROI Than a CDN Alone

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.
Aleks Haugom
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.