System Design AI

Designs

Pick a system. Work through the problem. Compare your approach.

Create your own

All designs 3

Ordered by design number

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

KafkaClear filters

42. Design a Metrics Monitoring Platform
Collect 5 million samples a second from 500,000 hosts, store them as time series, chart them and page people.
ClassicMedium
Databases Streaming Observability
+7
Distributed systems Alerting AWS Cardinality Kafka Prometheus Time series
Worked design
Practice
67. Design for Write Scale: A Million Writes a Second
A live TV vote at a million writes a second: spread by key, buffer in Kafka, aggregate the hot counter in two stages, shed what can wait.
ClassicMedium
Sharding Databases Streaming
+6
Distributed systems AWS DynamoDB Flink Kafka Scaling writes
Worked design
Practice
97. Design a Distributed Logging and Error Tracking System
Ten terabytes of logs an hour from host agents through Kafka into tiered OpenSearch and S3, with regex search, live tail and exceptions grouped into issues.
ClassicMedium
Streaming Search Observability
+7
Distributed systems AWS Error tracking Flink Kafka Logging OpenSearch
Worked design
Practice

Each design brings together the brief, practice, examples and discussion.