After upgrade, pay-as-you-go instances will be billed based on the new instance specifications starting from the next billing cycle.
If you choose to degrade a pay-as-you-go database instance, it will be billed at the tier 1 pay-as-you-go price for the new configuration.
TencentDB for MySQL supports quick adjustment of instance specification and allows flexible scaling operations. For more information, please see Adjusting Database Instance Specification.
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