Building an open Data Stream using Node.js, VanillaJS and Ably
summary
Builds an open data stream: a Node.js publisher emits the current time every second and a VanillaJS page subscribes and updates live via Ably DSX, proving end-to-end functionality on Glitch. Explains why WebSockets beat polling, how channels implement pub/sub, and how a streaming API manager creates producer/product records and access controls. Includes the practical bits—SDK init, channel.publish, channel.subscribe—and a free tier claim of 3 million free messages using Node.js + VanillaJS + Ably DSX.
AI-written summary · about
chapters (15)
- 0:00Start
- 3:24The Evolution of the Data Sharing Economy
- 5:11Storage
- 8:09Long Polling
- 9:30Websockets
- 10:56How Can You Implement Websockets in Your Own Applications
- 11:18Socket Io
- 13:49Scalability
- 15:01Data Stream Network
- 20:02Rate Limiting
- 20:20Access Management
- 25:22Private Api Key
- 34:30Api Streamer
- 35:17Documentation
- 36:02Add a Subscriber
related talks
23mStreaming Algorithms in Javascript and Node.js
57mWhy and how to transform a REST API into a Data Streaming API
23mDeliver real-time data to customer using Streaming APIs
14mStreaming the Web (it's not what you think)
50mSurchargés Live - Episode 03 - Accelerometer and Streams API
28mThe good, the bad and the ugly of nodejs streams
29mWebSockets Bring Light at the End of the Tunnel
23mBuilding Distributed Systems with Node.js