App A is a Php application, service B is elasticsearch.
A is deployed via istio, with canary pattern.
A'canary and A'current use the same B service.
If B is getting slow or down, A'canary and A'current will throw same errors, what happen at this moment?
- A'canary is disabled and 100% of traffic go to A'current
- istio can detect the trouble is not app related, and still route some traffic to canary