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Getting Started Pub/Sub

A complete real-time messaging starter project featuring a Harper application with MQTT, WebSocket, and Server-Sent Events (SSE) capabilities, plus client examples in multiple languages.
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Getting Started Pub/Sub

Ivan R. Judson, Ph.D.
Distinguished Solution Architect
at Harper
December 12, 2025
Ivan R. Judson, Ph.D.
Distinguished Solution Architect
at Harper
December 12, 2025
Ivan R. Judson, Ph.D.
Distinguished Solution Architect
at Harper
December 12, 2025
December 12, 2025
A complete real-time messaging starter project featuring a Harper application with MQTT, WebSocket, and Server-Sent Events (SSE) capabilities, plus client examples in multiple languages.
Ivan R. Judson, Ph.D.
Distinguished Solution Architect
A complete real-time messaging starter project featuring a Harper application with MQTT, WebSocket, and Server-Sent Events (SSE) capabilities, plus client examples in multiple languages.

Download

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A complete real-time messaging starter project featuring a Harper application with MQTT, WebSocket, and Server-Sent Events (SSE) capabilities, plus client examples in multiple languages.

Download

White arrow pointing right
A complete real-time messaging starter project featuring a Harper application with MQTT, WebSocket, and Server-Sent Events (SSE) capabilities, plus client examples in multiple languages.

Download

White arrow pointing right

Explore Recent Resources

Media Coverage
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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