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Function Compute:CreateFunctionInput

Last Updated:Sep 17, 2026

Parameter

Type

Description

Example

object

The function creation request parameters.

code InputCodeLocation

The ZIP package of the function code. Specify either code or customContainerConfig.

cpu

number

The CPU specification of the function in vCPU. The value must be a multiple of 0.05 vCPU. The minimum value is 0.05 and the maximum value is 16. The ratio of cpu to memorySize (in GB) must be between 1:1 and 1:4.

1

customContainerConfig CustomContainerConfig

The configuration of the custom container runtime. After successful configuration, the function can use a custom container image to execute the function. Specify either code or customContainerConfig.

customDNS CustomDNS

The custom DNS configuration.

customRuntimeConfig CustomRuntimeConfig

The custom runtime configuration.

description

string

The description of the function.

my function

diskSize

integer

The disk specification of the function in MB. Valid values: 512 and 10240.

512

environmentVariables

object

The environment variables of the function. You can access the configured environment variables in the runtime environment.

string

The value of the environment variable.

value1

functionName

string

The name of the function. The name can contain only letters, digits, underscores (_), and hyphens (-). It cannot start with a digit or hyphen (-). The name must be 1 to 64 characters in length.

my-function-1

gpuConfig GPUConfig

The GPU configuration of the function.

handler

string

The function entry point. The specific format is related to the runtime.

index.handler

instanceConcurrency

integer

The maximum concurrency of an instance.

1

instanceLifecycleConfig InstanceLifecycleConfig

The instance lifecycle hook method configuration.

internetAccess

boolean

Specifies whether the function can access the Internet. Default value: true.

true

layers

array

The list of layers. Multiple layers are merged in descending order of array index. Content from a layer with a smaller index overwrites files with the same name from a layer with a larger index.

string

The ARN of the layer.

acs:fc:cn-beijing:186824xxxxxx:layers/fc_layer/versions/1

logConfig LogConfig

The log configuration. Logs generated by the function are written to the configured Logstore.

memorySize

integer

The memory specification of the function in MB. The value must be a multiple of 64 MB. The minimum value is 128 MB and the maximum value is 32 GB. The ratio of cpu to memorySize (in GB) must be between 1:1 and 1:4.

512

nasConfig NASConfig

The NAS configuration. After you configure this parameter, the function can access the specified NAS resources.

ossMountConfig OSSMountConfig

The OSS mount configuration.

role

string

The RAM role that you grant to Function Compute. After the role is configured, Function Compute assumes this role to generate temporary access credentials. You can use the temporary access credentials of this role in the function to access specified Alibaba Cloud services such as OSS and OTS.

acs:ram::188077086902****:role/fc-test

runtime

string

The runtime environment of the function. Currently supported runtime environments include: nodejs12, nodejs14, nodejs16, nodejs18, nodejs20, go1, python3, python3.9, python3.10, python3.12, java8, java11, php7.2, dotnetcore3.1, custom, custom.debian10, custom.debian11, custom.debian12, and custom-container.

python3.10

timeout

integer

The timeout period for function execution in seconds. The minimum value is 1, the maximum value is 86400, and the default value is 3. The function is terminated if it exceeds this time limit.

60

tracingConfig TracingConfig

The tracing configuration. After Function Compute is integrated with Tracing Analysis, you can record the time consumed by requests in Function Compute, view the cold start time of functions, and record the time consumed by internal operations of functions.

vpcConfig VPCConfig

The VPC configuration. After you configure this parameter, the function can access the specified VPC resources.

tags

array

The list of tags.

Tag

The tag information.

disableOndemand

boolean

Specifies whether to disable the creation of on-demand instances. After this feature is enabled, on-demand instances are not created and only provisioned instances can be used.

sessionAffinity

string

The session affinity policy for Function Compute invocation requests. To implement request affinity for the MCP SSE protocol, set this parameter to MCP_SSE. To use cookie-based affinity, set this parameter to GENERATED_COOKIE. To use header-based affinity, set this parameter to HEADER_FIELD. If this parameter is not set or is set to NONE, no affinity is applied and requests are routed based on the default scheduling policy of Function Compute.

MCP_SSE

enableLongLiving

boolean

Specifies whether to allow provisioned instances of GPU functions to be long-running. When this feature is enabled, function instances that are created are not injected with STS tokens.

resourceGroupId

string

instanceIsolationMode

string

The instance isolation mode.

sessionAffinityConfig

string

The session affinity configuration that corresponds to the sessionAffinity type. For MCP_SSE affinity, configure MCPSSESessionAffinityConfig. For cookie-based affinity, configure CookieSessionAffinityConfig. For header field affinity, configure HeaderFieldSessionAffinityConfig.

{\"sseEndpointPath\":\"/sse\", \"sessionConcurrencyPerInstance\":20}

idleTimeout

integer

The instance deferred release time.

100

disableInjectCredentials

string

Specifies whether to disable STS token injection. Valid values:

  • None: Injects STS tokens in all methods.

  • Env: Does not inject STS tokens into environment variables.

  • Request: Does not inject STS tokens into requests, including context and headers.

  • All: Does not inject STS tokens in any method.

Env

polarFsConfig PolarFsConfig

The PolarFs configuration. After you configure this parameter, the function can access the specified PolarFs resources.

juiceFsConfig JuiceFsConfig

The JuiceFs mount configuration.

microSandboxConfig MicroSandboxConfig