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Symptom

The client gets an exception similar to:

ReplyError: ERR max daily request limit exceeded

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Diagnosis

Your database exceeds the max daily request count limit which is 10000 for the Free Tier(2500 for Global).

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Solution-1

You can refactor your application to send less number of commands.

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Solution-2

You can upgrade your database to pay-as-you-go plan by entering a payment method. When you entered your credit card, your database will be upgraded automatically.

See here for more information.