NAME
    gcloud spanner samples backend - run the backend gRPC service for the given
        Cloud Spanner sample app

SYNOPSIS
    gcloud spanner samples backend APPNAME --instance-id=INSTANCE_ID
        [--database-id=DATABASE_ID] [--duration=DURATION; default="1h"]
        [--port=PORT] [GCLOUD_WIDE_FLAG ...]

DESCRIPTION
    This command starts the backend gRPC service for the given sample
    application. Before starting the service, create the database and load any
    initial data with:

        $ gcloud spanner samples init APPNAME --instance-id=INSTANCE_ID

    After starting the service, generate traffic with:

        $ gcloud spanner samples workload APPNAME

    To run all three steps together, use:

        $ gcloud spanner samples run APPNAME --instance-id=INSTANCE_ID

EXAMPLES
    To run the backend gRPC service for the 'finance' sample app using instance
    'my-instance', run:

        $ gcloud spanner samples backend finance --instance-id=my-instance

POSITIONAL ARGUMENTS
     APPNAME
        The sample app name, e.g. "finance".

REQUIRED FLAGS
     --instance-id=INSTANCE_ID
        The Cloud Spanner instance ID for the sample app.

OPTIONAL FLAGS
     --database-id=DATABASE_ID
        The Cloud Spanner database ID for the sample app.

     --duration=DURATION; default="1h"
        Duration of time allowed to run before stopping the service.

     --port=PORT
        Port on which to receive gRPC requests.

GCLOUD WIDE FLAGS
    These flags are available to all commands: --access-token-file, --account,
    --billing-project, --configuration, --flags-file, --flatten, --format,
    --help, --impersonate-service-account, --log-http, --project, --quiet,
    --trace-token, --user-output-enabled, --verbosity.

    Run $ gcloud help for details.

NOTES
    These variants are also available:

        $ gcloud alpha spanner samples backend

        $ gcloud beta spanner samples backend