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Dashboard Learn Handbook Labs Practice library Learning paths Review Insights Studios Mock interviews Notebook

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Real-time updates · designlab

Dashboard Learn Handbook Labs Practice library Learning paths Review Insights Studios Mock interviews Notebook

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Part 1 · Module 12

Real-time updates

Choose how updates reach clients, push to many open connections, and keep delivery correct through disconnects and retries.

0 of 4 lessons24 min

12.1Choosing a transportUp next6m
12.2Pushing to many connections6m
12.3Delivery and ordering6m
12.4Huge audiences and hot channels6m
LabWhere's my rider?Finish “The public API is being scraped” first30m

Practice what this module teaches

Chat Service HLDDeliver ordered conversations across devices, reconnects and offline recipients.Intermediate45 min Online Presence Service HLDTrack multi-device presence using heartbeats, expiry and stale-event protection.Intermediate45 min Notification Service

HLD

Deliver email, SMS, and push notifications without losing work during provider outages.

Intermediate45 min