Getting the RATE_LIMIT_EXCEEDED in bitly

can any one tell me why i am getting this error .I am using the bit.ly to share in twitter.Sometimes i am getting the error

{"errorCode": 403, "errorMessage": "RATE_LIMIT_EXCEEDE开发者_如何学CD", "results": null, "statusCode": ""} Bit.ly "

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Here check the bitly best practices to avoid such an error Message.

bitly rate limitation best practices

How much URLs are u trying to shorten per hour?