Geocoding from App Engine servers results in 620

Is anyone else having this problem? Sometime last night after app engine's server maintenance, i have only succ开发者_如何学运维essfully been able to geocode a few addresses -- most responses are 620 errors. ive been running the same app with no problems for 3 months, so i think i think its a problem on google's end. one other person on the google groups discussion was able to confirm, but i want to be sure because im very skeptical given that more people arent complaining.

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here's the explaination of the 620 status code.

"The given key has gone over the requests limit in the 24 hour period or has submitted too many requests in too short a period of time. If you're sending multiple requests in parallel or in a tight loop, use a timer or pause in your code to make sure you don't send the requests too quickly."

And a post on the subject.

Hope it help!