ex 4: unclear what I can observe from failed calls

[SergeyKanzhelev]

@AlexBulankou

New Application Map view and it's unclear what you meant in "See if there is anything unusual about the failing calls."

Open Application Map for backend. Observe that there are two nodes shown: server and node and remote dependency node. Note, that remote dependency node is showing signifficant percentage of failing calls, however these errors are not propagated to the callers of backend, because all requests are successful.

Click on ... button on finance.google.com remote dependency and open failed calls. See if there is anything unusual about the failing calls.

This is what I see:

[SergeyKanzhelev]

I also do not understand the next step about ratio:

Observe that there's a dependency call made for every call into backend component. Open Filters by clicking the button on Application Map header and apply the filter to only show responses with 204 status code. Note the ratio of 204 responses to 200 responses and compare it with the ratio of failing to successful dependency calls.

Also rename "status code" to "response code" as it called in UI