Stephen Blum
CTO, PubNub
NewsJul 22, 2025
Engineering at the Edge of Impossibility: How We Delivered 973 Million Requests Per Minute During a Global Sporting Event
During a global sports event, PubNub handled a record 973 million requests per minute, enabling real-time interactions like chat, reactions, and synchronized live stats for millions of fans worldwide. Discover how our scalable infrastructure ensured zero downtime and seamless experiences at unprecedented scale.
Jun 12, 2025
Testing MCP Servers
After building the PubNub MCP server and putting it through its paces, I've learned a thing or two about testing these beasts. Let me walk you through what I've discovered.
AIMay 21, 2025
The New PubNub MCP Server - LLM Real-Time Apps
The new PubNub MCP Server is designed for Generative Coding (Vibe Coding) in AI environments, such as Cursor IDE and Windsurf, helping large language models quickly understand and interact with PubNub’s SDKs
Product UpdatesFeb 26, 2025
How We Halved Our Latency by Rewriting Presence Service API in Rust
Learn more about how we’ve improved our Presence Service by rewriting the architecture in Rust and how we are continuing to reduce our global memory and CPU consumption.
Sports Media EngagementFeb 17, 2025
Optimize Fan Engagement with Real-Time Sentiment Analysis
Real-time sentiment analysis can transform fan engagement when watching sports, media, or live entertainment
AIApr 24, 2024
Using AI Models on PubNub with HuggingFace API
PubNub Functions JavaScript issues HTTP requests to communicate with the HuggingFace API, sending text inputs and receiving AI results.
Apr 16, 2024
Build a Collaborative Text Editor ReactJS and CRDT
How to Build a Collaborative Real-time Text Editor using ReactJS and YJS CRDTs (Conflict Free Replicated Data Types)
Transport & LogisticsMar 24, 2024
Supply Chain with Real-time APIs and Generative AI
Real-time APIs can be used to enhance supply chain and distribution networks.
Mar 19, 2024
HTTP/3 Maintains a Consistent Connection ID
The connection ID isn't dependent on IP addresses. It remains persistent even as users switch between different networks such as 5G and Wi-Fi.
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