LLD - Advanced LLD Concepts
Given a system with a load balancer distributing requests to 3 servers equally, what happens if one server goes down?
Given a system with a load balancer distributing requests to 3 servers equally, what happens if one server goes down?
medium📝 Analysis Q4 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand load balancer health checks
Load balancers monitor server health and avoid sending traffic to unhealthy servers.Step 2: Effect of server failure
When one server fails, load balancer redistributes requests to remaining healthy servers.Final Answer:
Load balancer stops sending requests to the down server and redistributes traffic -> Option DQuick Check:
Load balancer = Smart traffic routing [OK]
Quick Trick: Load balancers detect failures and reroute traffic [OK]
Common Mistakes:
MISTAKES- Assuming load balancer ignores server health
- Thinking all servers shut down on one failure
- Believing clients get blocked
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