SSE
Server-Sent Events: a one-way channel where the server pushes updates to the client over HTTP. Simpler than WebSockets when you only need server-to-client streaming.
What is SSE?
Server-Sent Events: a one-way channel where the server pushes updates to the client over HTTP. Simpler than WebSockets when you only need server-to-client streaming.
SSE is a intermediate-level concept that sits in the API Design & Protocols area of system design. Engineers reach for it whenever they need to reason about real-world trade-offs in that space — not just for textbook correctness, but because real production systems at companies like Netflix, Amazon, and Google make these decisions every day.
If you want to go deeper than this definition — with diagrams, code, and a quiz to lock it in — work through the "SSE" lesson linked below. It walks through the why, the mechanism, the trade-offs, and how the giants actually use it in production.
Learn SSE in depth
Full interactive lesson with diagrams, code examples, real-world references, and a quiz.
Open the SSE lessonRelated lessons
Lessons that touch on SSE as part of a larger topic.
Server-Sent Events (SSE)
One-way server push over HTTP, real-time updates without the complexity of WebSockets
intermediate · messaging event systems
Asset Pipeline
The build process that transforms source files into optimized, production-ready assets with hashing, minification, and bundling
intermediate · web content delivery
Static Asset Optimization
Managing and optimizing CSS, JavaScript, images, and fonts for fast page loads
intermediate · web content delivery
Content Delivery Network (CDN)
Serve content from edge locations worldwide for sub-50ms response times using Cloudflare, CloudFront, and edge caching
foundation · load balancing proxies
Gossip Protocol
How nodes spread information like rumors, epidemic algorithms for membership, failure detection, and data dissemination
advanced · distributed systems core
See also
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