SQL Azure - 登录后阶段过去的超时时间

I have azure cloud service - 2 web instances, serving about 500,000 requests per day. Using Azure business database. There is one issue with it - sometimes (avg. once per day, but not in the same time) there is 2-3 minutes long interval while i am unable to query DB, the error message is like this:I have azure cloud service - 2 web instances, s