Requests

Requests made by calling APIs or on the KVS console (essentially through API calls) are billed by request units.

With provisioned billing, you are charged for the amount of throughput you specified. If the actual throughput of the table exceeds the specified values, requests are throttled.

Types of Request Units

Standard KVS request units refer to write request units (WRUs) and read request units (RRUs) with pay-per-use billing, or write capacity units (WCUs) and read capacity units (RCUs) with provisioned billing.

Billing

**Table 1** Request billing
Item	Sub-Item	Description	Billing Mode
Requests	Standard WRUs	put-kv (adding a single KV item), update-kv (updating a single KV item), delete-kv (deleting a single KV item), batch-write-kv (batch writing KV items), and others	Pay-per-use billing
	Standard RRUs	get-kv (querying a single KV item), scan-kv (scanning all the KV items in a table), scan-skey-kv (scanning part of the items by shard key), and others	Pay-per-use billing
	Standard WCUs	put-kv (adding a single KV item), update-kv (updating a single KV item), delete-kv (deleting a single KV item), batch-write-kv (batch writing KV items), and others	Provisioned billing
	Standard RCUs	get-kv (querying a single KV item), scan-kv (scanning all the KV items in a table), scan-skey-kv (scanning part of the items by shard key), and others	Provisioned billing

Billing Example 1: Pay-per-Use Billing

The estimated prices in the following example are only for reference.

Assume that from 8:00:00 to 9:00:00 on a certain day, your table processed one million RRUs. From 9:00:00 to 10:00:00 on the same day, it processed two million WRUs. The billing details for the request units processed from 8:00:00 to 10:00:00 are as follows:

**Table 2** Billing details
Billing Cycle	Operation	Billing Item	Unit Price	Usage	Price
8:00:00–9:00:00	Read	Standard RRUs	$0.3302 USD/million RRUs	1 million RRUs	1 million RRUs × $0.3302 USD/million RRUs = $0.3302 USD
9:00:00–10:00:00	Write	Standard WRUs	$1.667 USD/million WRUs	2 million WRUs	2 million WRUs × $1.667 USD/million WRUs = $3.334 USD
Total	/	/	/	/	$3.6642 USD

The requests for the cycles from 8:00:00 to 10:00:00 costed $3.6642 USD.

Billing Example 2: Provisioned Billing

The estimated prices in the following example are only for reference.

Assume when creating a table, you had 1,000 WCUs in write throughput and 100 RCUs in read throughput provisioned. From 8:00:00 to 9:00:00 on a certain day, the write requests recorded 900 WCUs, and the query requests recorded 100 RCUs. The details for the request units billed from 8:00:00 to 9:00:00 are as follows:

**Table 3** Billing details
Billing Cycle	Operation	Billing Item	Unit Price	Usage	Price
8:00:00–9:00:00	Write	Standard WCUs	$0.0008648 USD/WCU-hour	1,000 WCUs	1,000 WCUs × $0.0008648 USD/WCU-hour = $0.8648 USD
8:00:00–9:00:00	Read	Standard RCUs	$0.000173 USD/RCU-hour	100 RCUs	100 RCUs × $0.000173 USD/RCU-hour = $0.0173 USD
Total	/	/	/	/	$0.8821 USD