Help me understand Fabric Capacity

Hi DamianMcc ,
nilendraFabric  Thanks for your prompt response.

Thanks for reaching out to the Microsoft Fabric Community forum.

Thank you for your detailed explanation of the situation. we understand that you're seeing a consumption of 193K CUs for a specific group of transactions and are expecting to have 345K CUs available for the next day.

However, your capacity might not reset all at once every 24 hours. Instead, it could be refilled gradually over time. For example, if your capacity is refilled gradually over time, you won't see an immediate full reset at the end of 24 hours.

Additionally, if there are other background processes or transactions that consume capacity, even if they are not visible to you, they could be affecting your available CUs.

To better estimate and manage CU usage, consider the following:

• Keep track of your CU usage every hour instead of just looking at the daily total.
• Watch out for sudden spikes—if any transaction uses more than 14,400 CUs in an hour, it might be using capacity from future hours.
• Adjust your CU usage by either increasing your capacity or spreading out transactions more evenly throughout the day.

Additonally you can refer the below Docs : 

Understand the metrics app compute page - Microsoft Fabric | Microsoft Learn
Metrics app calculations - Microsoft Fabric | Microsoft Learn

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