ENG//KNOWLEDGEENGINEERING WORKBENCH

System Design

Architecture and distributed systems interview prep.

MODULE 0114 NOTESARCHITECTURE / TRADE-OFFS / SCALE
INTERACTIVE TOOL / CLIENT-SIDEArchitecture Decision Lab

Enter workload constraints and compare storage, caching, streaming, and replication trade-offs.

OPEN LAB →
CLUSTER 01

Data & ML Platforms

4 notes
Data & ML Platforms

Design a Crawl-Based Product Catalog for Advertising

Build an advertising catalog from merchant websites with polite crawling, verified offers, media ingestion, and freshness controls.

system-designweb-crawlingproduct-catalog
Data & ML Platforms

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-designstreamingad-tech
Data & ML Platforms

Design an A/B Testing Platform

Deterministic local assignment, reliable exposure tracking, reproducible analytics, and safe rollout controls at scale.

system-designexperimentationanalytics
Data & ML Platforms

Design a User Behavior Data and Feature Platform

From mobile events to trustworthy sessions, funnels, offline training data, and fresh online model features.

system-designstreamingdata-platforms
CLUSTER 02

Collaboration & Scheduling

1 note
Collaboration & Scheduling

Design a Calendar and Scheduling System

Design shared events, recurring meetings, time-zone handling, reliable reminders, and incremental sync around one authoritative event model.

system-designcalendarsscheduling
CLUSTER 03

Search & Retrieval

1 note
Search & Retrieval

Design a Search Autocomplete System

Design prefix retrieval, live trends, ranking, and emergency takedowns with immutable indexes and bounded online work.

system-designsearchautocomplete
CLUSTER 04

Infrastructure & Developer Platforms

1 note
Infrastructure & Developer Platforms

Design a Cloud Sandbox Platform for Untrusted Code

MicroVM isolation, durable workspaces, browser and SSH access, and resource-aware task scheduling with leases, fencing, and recovery.

system-designdeveloper-platformsmicrovms
CLUSTER 05

AI Platforms & Security

2 notes
AI Platforms & Security

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-designcontent-moderationmachine-learning
AI Platforms & Security

Design a Secure Enterprise Copilot API

A Staff-level design for secure Copilot chat, authorized retrieval, delegated tools, streaming, and cost control.

system-designsecurityauthorization
CLUSTER 06

Security & Authorization

1 note
Security & Authorization

Design a Hierarchical File System with Inherited Permissions

A secure file platform with group ACLs, inherited access, SQL authorization, and safe revocation.

system-designauthorizationaccess-control
CLUSTER 07

Real-Time Systems

1 note
Real-Time Systems

Design a Real-Time Multiplayer Board Game Platform

Server-authoritative turns, durable move ordering, reconnects, clocks, and safe failover for online two-player games.

system-designmultiplayerstate-machines
CLUSTER 08

Streaming & Analytics

2 notes
Streaming & Analytics

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-designstreamingmatching
Streaming & Analytics

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.

system-designstreaminganalytics
CLUSTER 09

Observability & Data Platforms

1 note
Observability & Data Platforms

Designing a Distributed Logging System

A Staff-level design for collecting, storing, indexing, searching, tailing, and alerting on millions of log events per second.

distributed-systemsloggingkafka