Web Crawler System Design Simulator

Drag nodes, adjust politeness and Bloom filters, and trace the crawl loop.

t = 0.0s

Speed Seed

Preset Scenarios

Crawl depth limit 3

Politeness delay 1.5s

Enforce politeness

Bit array size 1024 bits

Hash functions 3

Thread count 4

DNS latency 0.5s

DNS Cache TTL 30s

URL / Request DNS Resolution Content / Parsing Timeout / Error

Pages Crawled

Crawl Rate

0.0/s

False Positives

Active Threads

0/4

Queue Backlog

Crawl Errors

Component	Status	Load / Count

Tip

Click a component node on the canvas to inspect real-time state.

Interaction

Drag any node to reposition. Use zoom controls to fit layout.