Notes and Constraints

**Table 1** Account resource constraints
Resource	Limit	Adjustable
Maximum number of functions that can be created under an account	400	No. To adjust the quota, contact customer service.
Maximum number of versions allowed for a function	20	No. To adjust the quota, contact customer service.
Maximum number of aliases allowed for a function	10	No. To adjust the quota, contact customer service.
Size of a code deployment package (in ZIP or JAR format) that can be uploaded to the FunctionGraph console	40 MB	No. To adjust the quota, contact customer service.
Size of a code deployment package (in ZIP or JAR format) that can be edited inline during function API invocation	50 MB	No. To adjust the quota, contact customer service.
Size of an original code deployment package allowed during function API invocation	ZIP: 1500 MB (after decompression) OBS bucket: 300 MB (after compression)	No. To adjust the quota, contact customer service.
Maximum size of deployment packages allowed for an account	10 GB	No. To adjust the quota, contact customer service.
Number of concurrent executions per account	100	Yes
Maximum number of reserved instances that an account can create	90 (Number of concurrent executions per account x 90%)	Yes
Size of all environment variables of a function	4096 characters	No. To adjust the quota, contact customer service.
Maximum size of code that can be displayed on the console	20 MB	No. To adjust the quota, contact customer service.

**Table 2** Function running resource constraints
Resource	Default	Adjustable
Ephemeral disk space (/tmp space)	512 MB	No. To adjust the quota, contact customer service.
Number of file descriptors	1024	No. To adjust the quota, contact customer service.
Total number of processes and threads	1024	No. To adjust the quota, contact customer service.
Maximum execution duration per request	259,200s	Yes
Valid payload size of invocation request body (synchronous invocation)	6 MB	No. To adjust the quota, contact customer service.
Valid payload size of invocation response body (synchronous invocation)	6 MB	No. To adjust the quota, contact customer service.
Valid payload size of invocation request body (asynchronous invocation)	256 KB	No. To adjust the quota, contact customer service.
Size of imported resources	≤ 50 MB ZIP file	No. To adjust the quota, contact customer service.
Image size per function	10 GB	No. To adjust the quota, contact customer service.
Size of exported resources	≤ 50 MB	No. To adjust the quota, contact customer service.
Instances per tenant	1000	Yes
Max. memory per function	10 GB	No. To adjust the quota, contact customer service.
Bandwidth	Unlimited	-
Single log size	Unlimited	-
Maximum execution duration of initializer	259,200s	Yes

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