Tag
streaming
System Design
Design a Search Autocomplete System
Design prefix retrieval, live trends, ranking, and emergency takedowns with immutable indexes and bounded online work.
System Design
Design a Real-Time Ad Budget and Pacing System
Account for millions of impressions, filter 10,000 candidates locally, and protect shared advertising budgets with reserved quota.
System Design
Design a Multi-Modal Content Moderation Platform
A low-latency publishing gate, asynchronous video analysis, versioned policy decisions, human review, and reliable enforcement at scale.
System Design
Design a User Behavior Data and Feature Platform
From mobile events to trustworthy sessions, funnels, offline training data, and fresh online model features.
System Design
Design a Real-Time Stock Price Alert System
Shared rolling price changes, sharded threshold matching, and durable one-shot alerts for millions of market subscriptions.
System Design
Design a Real-Time Restaurant Analytics Dashboard
How to serve fresh orders, revenue, and top-dish metrics at 100K order events per second without scanning raw orders.