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Daniel-Constantin Mierla writes:
If a software crashes, then can be started by another
application which
does just monitoring of that application. But of course, if monitoring
and application crashes in the same time, you are unlucky, adding
another monitor for monitoring app decreases the chance that all 3 apps
crashes in the same time ...
monitoring can be avoided with two systems running independently from
each other. this is possible, if your UAs are able to register via two
proxies.
if you are willing to tolerate UA unavailability until it re-registers,
it may be possible to avoid monitoring also in case UA registers via
only one proxy.
-- juha