Definition
A circuit breaker monitors dependency failures and changes whether calls are permitted. In the closed state calls proceed; in the open state they fail quickly without calling the dependency; in the half-open state a limited number of probes test recovery. Thresholds and recovery rules are implementation choices.
Why It Matters
- A commerce agent can depend on stock, delivery, or order services during one customer request.
- The merchant needs an explicit service-unavailable outcome when an agent cannot obtain the evidence required for its next step.
- Within a Commerce Intelligence OS, dependency health belongs in the evidence attached to a proposed action.
How It Works
- Identify the dependency and operation being protected. Define which failures count, the observation window, opening threshold, and recovery probe policy.
- Use a fallback appropriate to the commerce task. If live stock cannot be checked, preserve the shopper request and explain that confirmation is pending.
- Allow controlled recovery probes before restoring traffic. Use retries that respect breaker state rather than immediately repeating rejected calls.
- Record the interrupted workflow and any uncertain external effects. Before resuming, confirm whether the earlier operation completed so a second business action is not issued blindly.
Ecommerce Example
Context: Illustrative example: a delivery service repeatedly times out while an assistant builds shipping options.
Recommended move: The breaker opens and the assistant records that delivery confirmation is unavailable. The merchant can route the saved basket for follow-up without inventing a delivery date.
Why it matters: After recovery is confirmed, the workflow obtains fresh options before asking the customer to proceed. This describes a design pattern, not a measured iKawn outage result.
iKawn Framework
Observe
The iKawn framework attaches dependency health to workflow evidence.
Pause
Make unavailable confirmation an explicit state in the commerce journey.
Recover
Require fresh evidence when the interrupted workflow resumes.
Audit
Retain the dependency failure and subsequent commercial action together.
Concise Summary
A circuit breaker limits calls during dependency failure. A useful commerce workflow also preserves customer context and obtains fresh evidence before resuming.