System Design AI

Guided practice

Start with a template. Work through each step. Ask Coach when you need a second opinion.

All designs 1

Ordered by design number

Company tags are community-reported. Counts on cards show how many people reported that design.

Bloom filterClear filters

86. Design an IP and URL Denylist
Deny requests by caller address, range or URL at a global edge, with lists from governments, threat feeds and detection reaching 300 proxies in seconds.
ClassicMedium
Security AWS Bloom filter
+3
CIDR Denylist Edge
Worked design
Practice

Self-paced by default. Your answers and canvas stay private. AI feedback runs only when you ask for it.