Flowcharts & Processes

How Load Balancers Evict Bad Nodes

Flowcharts & Algorithms diagram · made in Skemio

Flowchart showing health check remediation: request routing, failure checks, eviction from pool, active probe polling, and restoration.
Flowchart showing health check remediation: request routing, failure checks, eviction from pool, active probe polling, and restoration.
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What it shows

  • Passive probes inspect live user traffic for consecutive 5xx errors.
  • Active probes ping isolated health endpoints every 5 to 10 seconds.
  • Nodes require multiple consecutive successes before re-entering the pool.

The takeaway

Decouple passive failure detection from active recovery checks to prevent cascading outages.

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