Senior LevelSystem Design & Architecture
What is Cell-Based Architecture and how does it limit fault blast radius?
❓ Interview Prompt: Explain Cell-Based Architecture, complete independent cell silos, limiting blast radius, and global routing routers.
Cell-Based Architecture partitions an entire application ecosystem into multiple completely independent, self-contained deployment units called Cells:
Blast Radius Mitigation:
•
Each Cell contains its own API Gateways, Microservices, and Database instances serving a max slice of users (e.g. 5% of total user base per Cell).
•
If a critical outage strikes Cell 3, 95% of users in other Cells remain 100% unaffected!
Code Implementation Example
markdown
Cell-Based Architecture Blast Radius Isolation:
[Global Edge Router]
┌────────────────┬────────────────┐
▼ ▼ ▼
[Cell 1 (5%)] [Cell 2 (5%)] [Cell 3 (5%)]
├── Web Tier ├── Web Tier ├── Web Tier (Fails!)
├── App Tier ├── App Tier ├── App Tier
└── Database └── Database └── Database💡Cell-Based Architecture isolating failure blast radius to a single independent cell.
🎯 Interview Key Takeaway
Implement Cell-Based Architecture to partition users into independent infrastructure silos, capping outage blast radius.
#System Design#Cell-Based Architecture#Blast Radius#Fault Tolerance#Senior
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