SCF is pay-per-use service without upfront payment. Fees are calculated per hour in USD. An SCF bill consists of the following three parts (each part is billed according to its statistics and calculation method, and the fees are accurate to 2 decimal places in USD).
For the unit prices of resource usage, invocation volume, and public network outbound traffic, please see Product Pricing. Here, the public network outbound traffic is in GB.
SCF fees will be incurred by actual loading and execution of function code. If the function code is not actually executed, no fees will be incurred. Below is an example:
|Scenario||Function Execution Status||Calculated||Billed|
|A request error occurs due to an incorrect parameter, incorrect function name, or non-existent function.||Not executed||No||No|
|An error occurs due to function execution timeout or function execution memory overrun.||Executed||Yes||Yes|
|An error occurs due to a function code problem.||Executed||Yes||Yes|
|A request error occurs due to concurrence overrun.||Not executed||No||No|
Resource usage fees = (resource usage - free tier) * resource usage unit price
Resource usage = memory configured for function * execution duration
Resource usage is calculated by multiplying the memory configured for function by the billable function execution duration. Here, the configured memory is in GB, and the billable duration is converted from milliseconds to seconds. Therefore, the resource usage is in GBs.
For example, if a function with 256 MB memory configured is executed for 1760 ms, then the billable duration is 1760 ms, and the resource usage of this function execution will be (256/1024) * (1760/1000) = 0.44 GBs.
Resource usage will be calculated for each function execution and aggregated in each hour as the hourly resource usage.
- Currently, SCF resource usage is calculated by multiplying the memory configured for function by the actually triggered execution duration of function. Compared with the billing method of 100-ms upward aggregation, this billing method calculates lower overall resource usage and incurs fewer fees. For more information, please see Billing Sample.
- Due to issues such as uncertainty of computing resources where SCF runs, specific actions in code, and relevant network communications, the execution duration of the same function code may vary slightly when the code is triggered at different times.
Invocation volume fees = (number of function invocations - free tier) * invocation unit price
Each function triggering and execution will be calculated as an invocation and aggregated in each hour as the hourly invocation volume. Fees will be charged per 10,000 invocations.
Public network outbound traffic fees = public outbound traffic * traffic unit price
Outbound traffic will be generated when resources are accessed over the public network in a function, such as uploading a file to an external storage space:
If you use other products such as CMQ, CKafka, API Gateway, and COS when using SCF, fees will be calculated according to the billing rules of the actually used products.