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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

Harper
at Harper
July 15, 2025
Harper
at Harper
July 15, 2025
Harper
at 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

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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

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Explore Recent Resources

Media Coverage
GitHub Logo

Harper Argues Against the Multi-System Stack and Releases 5.2

InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Media Coverage
InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Renato Losio, Staff Editor at InfoQ
Renato Losio
InfoQ Staff Editor
Media Coverage

Harper Argues Against the Multi-System Stack and Releases 5.2

InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Renato Losio
Aug 2026
Media Coverage

Harper Argues Against the Multi-System Stack and Releases 5.2

InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Renato Losio
Media Coverage

Harper Argues Against the Multi-System Stack and Releases 5.2

InfoQ examines benchmark results comparing co-located and serverless architectures, highlighting faster personalized-data paths, serverless advantages under heavy fan-out, and the performance implications of eliminating network hops between services at scale.
Renato Losio
Blog
GitHub Logo

Faster by Doing Less: How Harper 5.2 Engineers Database Performance

Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Cache
Blog
Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Person with very short blonde hair wearing a light gray button‑up shirt, standing with arms crossed and smiling outdoors with foliage behind.
Kris Zyp
SVP of Engineering
Blog

Faster by Doing Less: How Harper 5.2 Engineers Database Performance

Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Kris Zyp
Aug 2026
Blog

Faster by Doing Less: How Harper 5.2 Engineers Database Performance

Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Kris Zyp
Blog

Faster by Doing Less: How Harper 5.2 Engineers Database Performance

Harper 5.2 attacks database performance on three fronts: a per-worker record cache validated through lock-free atomic version slots, isolated commit scheduling to keep database writes off the application thread, and query planner improvements that route through the shortest available data path.
Kris Zyp
News
GitHub Logo

Harper Recognized as an Honorable Mention in the 2026 Gartner® Magic Quadrant™ for Cloud-Native Application Platforms

Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Announcement
News
Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
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
News

Harper Recognized as an Honorable Mention in the 2026 Gartner® Magic Quadrant™ for Cloud-Native Application Platforms

Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Aleks Haugom
Aug 2026
News

Harper Recognized as an Honorable Mention in the 2026 Gartner® Magic Quadrant™ for Cloud-Native Application Platforms

Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Aleks Haugom
News

Harper Recognized as an Honorable Mention in the 2026 Gartner® Magic Quadrant™ for Cloud-Native Application Platforms

Harper’s inclusion highlights a broader shift toward integrated cloud-native platforms that unify data, caching, messaging, and application logic. The article explains how Harper’s distributed runtime and managed infrastructure reduce operational complexity, improve performance, and support modern applications and AI agents that require fast, reliable access to state, events, and tools.
Aleks Haugom
News
GitHub Logo

Harper 5.2: More Throughput per Node, Fewer Systems Around It

Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Product Update
News
Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
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
News

Harper 5.2: More Throughput per Node, Fewer Systems Around It

Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Aleks Haugom
Aug 2026
News

Harper 5.2: More Throughput per Node, Fewer Systems Around It

Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Aleks Haugom
News

Harper 5.2: More Throughput per Node, Fewer Systems Around It

Harper 5.2 helps architecture and platform leaders improve performance, control infrastructure costs, secure production workloads, and reduce operational complexity by bringing faster data access, agentic capabilities, scheduling, backup, routing, and protection into one unified runtime.
Aleks Haugom