Well, here's my loopback.
Microsoft did answer pretty well to the case I opened.
The case involved two incidents or lack of availability during one week, and in particular on the dates 9 and 11 January.
One case was attributed an 'overloaded front end to the service bus' and the other as '6% of nodes down'. I'm using the North Central US data center.
As I read the SLA, which covers a 30 day period and offers 99.9% availability, the agreement was not met for January, since 4 hours of downtime were noted. I'm not sure of the remedy when SLA is not met. No money was lost so the damages were minimal at the
time, only development time was lost.
Also, I questioned why availability, rather the lack thereof, for the service bus (and Management Portal) was not visible on the Azure status page (http://www.windowsazure.com/en-us/support/service-dashboard/
) and only got a response that the operations team is further studying. One of the outtages does show in the history for service bus on that page, but the other doesn't. And the one that shows in the history, was not visible during real-time, it only showed
up later.
So my overall conclusion is the service bus is not yet ripe for mission critical software/services to use. There are some monitoring limitations, which I've pointed out on other threads on this forum (and which Microsoft has said will be available in the
near future), and lack of ability to monitor accurate current status.
Please read the part above where I put 'mission critical'. Because most software isn't mission critical.
My overall attitute leaves me quite attracted to the functionality and pricing of Azure AppFabric, so I will continue to consider the service bus for future software development. The connectivity and associated services, such as ACS, made the development
for the particular project I'd been working on proceed much more quickly than if we'd chosen other technology avenues. Also, the architecture implemented was intended to offer easy extensibility, and this came true.
Probably Microsoft understands Azure AppFabric is mission critical for them. And will further the stability and availability of the service bus to support mission critical software.
Now I'm done with this thread ... and I'll not be monitoring availability for the that last project any further, though the software is actively using the service bus and will continue to do so at least for the near future.