Changefeed Billing

TiDB Cloud measures the capacity of changefeeds in TiCDC Replication Capacity Units (RCUs). When you create a changefeed for a cluster, you can select an appropriate specification. The higher the RCU, the better the replication performance. You will be charged for these TiCDC changefeed RCUs.

Number of TiCDC RCUs

The following table lists the specifications and corresponding replication performances for changefeeds:

Specification	Maximum replication performance
2 RCUs	5,000 rows/s
4 RCUs	10,000 rows/s
8 RCUs	20,000 rows/s
16 RCUs	40,000 rows/s
24 RCUs	60,000 rows/s
32 RCUs	80,000 rows/s
40 RCUs	100,000 rows/s

Note

The preceding performance data is for reference only and might vary in different scenarios. It is strongly recommended that you conduct a real workload test before using the changefeed feature in a production environment. For further assistance, contact TiDB Cloud support.

Price

To learn about the supported regions and the price of TiDB Cloud for each TiCDC RCU, see Changefeed Cost.

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