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    Function Compute:Function

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    Function Compute:Function

    Last Updated:Jan 14, 2026

    Parameter

    Type

    Description

    Example

    object

    The configuration of the function.

    codeChecksum

    string

    The CRC-64 value of the function code package.

    2825179536350****
    codeSize

    integer

    The size of the function code package, in bytes.

    412
    cpu

    number

    The CPU specification of the function, in vCPUs. 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 memory size (in GB) must be between 1:1 and 1:4.

    1
    createdTime

    string

    The time when the function was created.

    2023-04-01T08:15:27Z
    customContainerConfig CustomContainerConfig

    The configuration for the custom container runtime. After you configure this parameter, the function can use a custom container image to run. You must 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 size of the function, in MB. Valid values are 512 MB and 10240 MB.

    512
    environmentVariables

    object

    The environment variables of the function. The configured environment variables can be accessed in the runtime environment.

    string

    The value of the environment variable.

    value1
    functionArn

    string

    The resource identifier of the function.

    acs:fc:cn-shanghai:123:functions/functionName
    functionId

    string

    The globally unique ID that is generated by the system for the function.

    aa715851-1c20-4b89-a8fb-***
    functionName

    string

    The name of the function.

    my-function-1
    gpuConfig GPUConfig

    The GPU configuration of the function.

    handler

    string

    The entry point for the function execution. The format varies based on the runtime.

    index.handler
    instanceConcurrency

    integer

    The maximum concurrency of the instance.

    1
    instanceLifecycleConfig InstanceLifecycleConfig

    The configuration of the instance lifecycle hook.

    internetAccess

    boolean

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

    true
    lastModifiedTime

    string

    The time when the function was last updated.

    2023-05-01T08:15:27Z
    lastUpdateStatus

    string

    The status of the last update operation on the function. When a function is created, the value is `Successful`. Valid values: `Successful`, `Failed`, and `InProgress`.

    InProgress
    lastUpdateStatusReason

    string

    The reason for the status of the last update operation on the function.

    The system is currently processing the acceleration optimization for the image.
    lastUpdateStatusReasonCode

    string

    The status code for the reason of the last update operation on the function.

    ImageOptimizing
    layers

    array

    The list of layers.

    FunctionLayer

    The layer information.

    logConfig LogConfig

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

    memorySize

    integer

    The memory size 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 memory size (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 you set this parameter, Function Compute assumes the role to generate temporary access credentials. The function can use the temporary access credentials of the role to access specified Alibaba Cloud services, such as OSS and Tablestore.

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

    string

    The runtime environment of the function. The following runtimes are supported: 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
    state

    string

    The current state of the function.

    Pending
    stateReason

    string

    The reason why the function is in the current state.

    Function creating
    stateReasonCode

    string

    The status code for the reason why the function is in the current state.

    Creating
    timeout

    integer

    The timeout period for the function to run, in seconds. The minimum value is 1 second and the maximum value is 86,400 seconds. The default value is 3 seconds. If the function runs longer than this period, the execution is stopped.

    60
    tracingConfig TracingConfig

    The Tracing Analysis configuration. Integrating Function Compute with Tracing Analysis lets you record the time that requests consume in Function Compute, view the cold start time of functions, and record the time consumed within 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. If this feature is enabled, on-demand instances are not created. Only provisioned instances can be used.

    invocationRestriction

    FunctionRestriction

    sessionAffinity

    string

    The 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 you do not set this parameter or set it to `NONE`, no affinity is used, and requests are routed based on the default scheduling policy of Function Compute.

    MCP_SSE
    enableLongLiving

    boolean

    When you set the `sessionAffinity` type, you must configure the related affinity settings. For `MCP_SSE` affinity, specify the `MCPSSESessionAffinityConfig` settings. For cookie-based affinity, specify the `CookieSessionAffinityConfig` settings. For header field-based affinity, specify the `HeaderFieldSessionAffinityConfig` settings.

    resourceGroupId

    string

    The ID of the resource group.

    instanceIsolationMode

    string

    The isolation mode for the instance.

    sessionAffinityConfig

    string

    When you set the `sessionAffinity` type, you must configure the related affinity settings. For `MCP_SSE` affinity, specify the `MCPSSESessionAffinityConfig` settings. For cookie-based affinity, specify the `CookieSessionAffinityConfig` settings. For header field-based affinity, specify the `HeaderFieldSessionAffinityConfig` settings.

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

    integer

    The amount of time that an instance can remain idle before it is released.

    100
    disableInjectCredentials

    string

    Specifies whether to prevent the injection of the Security Token Service (STS) token. Valid values are `None`, `Env`, `Request`, and `All`. `None` means the token is injected. `Env` means the token is not injected into environment variables. `Request` means the token is not injected into the request, including the context and header. `All` means the token is not injected.

    Env
    polarFsConfig PolarFsConfig

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