Technical, Case & Engineering Studio

Comprehensive multi-disciplinary interview workbench covering every major — from Agricultural, Civil, Biomedical, and Mechanical engineering to Software System Design and Management Consulting Cases.

1-Click System Templates

Scale & Traffic ParametersRead : Write Ratio · 12.5:1

System Name / Architecture TopicPress Enter or click Auto-Estimate to calculate scale

Daily Active Users (DAU)25.0M users

Reads / User / Day

Writes / User / Day

Read Payload (Bytes)

Write Payload (Bytes)

Read Throughput

7,234 QPS

Peak: 14,468 QPS (2x buffer)

Write Throughput

579 QPS

Peak: 1,158 QPS

Storage Capacity

85 TB (5-Yr)

1-Yr: 17 TB · Ingestion: 47.7 GB/day

RAM Cache Sizing (80/20)

238.4 GB RAM

Caches 20% hot daily read working set in memory

Network Ingress Bandwidth

5 Mbps

Inbound payload transfer rate

Network Egress Bandwidth

119 Mbps

Outbound client delivery transfer rate

Data Layer & Sharding Strategy

Distributed NoSQL

Database Pattern:Distributed NoSQL (Cassandra / DynamoDB) for writes + Document store for metadata.

Sharding / Partitioning:Consistent Hashing on UserID with virtual nodes to avoid hot partitions.

Caching & Replication Blueprint

Multi-AZ

Caching Layer:Distributed Redis cluster (238.4GB RAM) with LRU eviction and Cache-Aside pattern.

Replication & Availability:Multi-AZ active-passive replication with automated failover and write-ahead logs.