Notes and Constraints

**Table 1** Account resource constraints
Resource	Limit
Maximum number of functions that can be created under an account	400
Maximum number of versions allowed for a function	10
Maximum number of aliases allowed for a function	10
Size of a code deployment package (in ZIP or JAR format) that can be uploaded to the FunctionGraph console	40 MB
Size of a code deployment package (in ZIP or JAR format) that can be edited inline during function API invocation	50 MB
Size of an original code deployment package allowed during function API invocation	ZIP: 1500 MB (after decompression) OBS bucket: 300 MB (after compression)
Maximum size of deployment packages allowed for an account	10 GB
Number of concurrent executions per account	100
Maximum number of reserved instances that an account can create	90 (Number of concurrent executions per account x 90%)
Size of all environment variables of a function	4096 characters

**Table 2** Function running resource constraints
Resource	Default
Ephemeral disk space (/tmp space)	512 MB
Number of file descriptors	1024
Total number of processes and threads	1024
Maximum execution duration per request	259,200s
Valid payload size of invocation request body (synchronous invocation)	6 MB
Valid payload size of invocation response body (synchronous invocation)	6 MB
Valid payload size of invocation request body (asynchronous invocation)	256 KB
Size of imported resources	≤ 50 MB ZIP file
Image size per function	10 GB
Size of exported resources	≤ 50 MB
Instances per tenant	1000

Valid payload size of invocation response body (synchronous invocation): The returned character string or the JSON character string of the serialized response body is less than or equal to 6 MB by default. The actual data size varies depending on the backend settings of FunctionGraph. The backend determines the size of the serialized data with a byte-level deviation. The actual valid payload size is 6 MB ± 100 bytes.
You are not advised to invoke a function whose execution time exceeds 90s on the FunctionGraph console. To invoke such a function, use asynchronous invocation.

Parent topic: Service Overview