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    Function Compute:UpdateFunctionInput

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    Function Compute:UpdateFunctionInput

    Last Updated:Sep 17, 2026

    Parameter

    Type

    Description

    Example

    object

    The function update 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.

    1
    customContainerConfig CustomContainerConfig

    The custom container runtime configuration. After this parameter is configured, the function can use a custom container image for execution. 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

    value1
    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 to allow access to the Internet.

    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 layer ARN.

    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 memory specification varies depending on the function instance type.

    512
    nasConfig NASConfig

    The NAS configuration. After this parameter is configured, the function can access the specified NAS resources.

    ossMountConfig OSSMountConfig

    The OSS mount configuration.

    role

    string

    The RAM role that grants Function Compute the required permissions. Scenarios include: 1. Sending logs generated by the function to your Logstore. 2. Generating temporary access tokens for the function to access other cloud resources during the execute procedure.

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

    string

    The runtime environment of the function.

    nodejs14
    timeout

    integer

    The timeout period for function execution, in seconds. Minimum value: 1. Default value: 3. The function is terminated if it exceeds this time limit.

    60
    tracingConfig TracingConfig

    The Tracing Analysis 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 function operations.

    vpcConfig VPCConfig

    The VPC configuration. After this parameter is configured, the function can access the specified VPC resources.

    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.

    instanceIsolationMode

    string

    The instance isolation mode.

    sessionAffinityConfig

    string

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

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

    integer

    The delayed release time of the instance.

    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 through environment variables.

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

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

    Env
    polarFsConfig PolarFsConfig

    The PolarFs configuration. After this parameter is configured, the function can access the specified PolarFs resources.

    juiceFsConfig JuiceFsConfig

    The JuiceFs mount configuration.

    microSandboxConfig MicroSandboxConfig