How This Startup Uses WebTransport to Replace WebSocket for Low-Latency Streaming

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How This Startup Uses WebTransport to Replace WebSocket for Low-Latency Streaming

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In episode 87 of The Technical Co-Founder Podcast, Lucas and Luna dive into how one startup replaced WebSocket with WebTransport for real-time data streaming. They trace the journey of a live-video analytics startup that switched from WebSocket to WebTransport to cut latency from 150 milliseconds to under 10. Lucas explains the protocol differences — WebTransport runs on QUIC over UDP instead of TCP — and why that matters for applications like live captioning, gaming, and financial tickers. Luna challenges whether the migration was worth it for a small team, and Lucas breaks down the library choices (like Node.js server with webtransport-rs) and the surprising gotchas around TLS certificate requirements and browser support. The episode also covers how the startup used WebTransport's unreliable streams for video frames and reliable streams for metadata, achieving sub-10ms latency. Listeners learn a concrete migration path and the trade-offs between WebSocket and WebTransport for any founder considering real-time architecture. #WebTransport #WebSocket #QUIC #UDP #RealTimeStreaming #LowLatency #NodeJS #webtransport-rs #LiveVideoAnalytics #BrowserSupport #TLS #UnreliableStreams #HTTP3 #ProtocolMigration #StartupTechStack #EngineeringPodcast #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

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