Let me ask a quetion about cloudSQL which are carrying out a mysterious action.
Although the site is operated by the unrestricted plan of cloudSQL, there occurs a situation with no response from DB.
It has become impossible to use the site with a connection error of DB which is shown on the site.
At the time above occurs, when I check with "Google APIs Console",
connection becomes 0 and it seems that the DB has been rebooted somehow.
After 10 to 15 minutes when connection becomes 0, the number of connections is increased at a stroke as the queries which had accumulated are processed.
Although it has happened several times, it occurs not at the time especially with many accesses, rather occurs at time with few accesses, such as
midnight. It seems that this is not a problem of applications because of the frequency of this happening.
Does this phenomenon occur by the structure of applications?
Or is it the specification of GAE?
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