[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間:2025-09-04 (世界標準時間)。"],[[["\u003cp\u003eThe \u003ccode\u003eapp.yaml\u003c/code\u003e file is essential for configuring an App Engine app, defining runtime, handlers, scaling, and other settings, including environment variables.\u003c/p\u003e\n"],["\u003cp\u003eA \u003ccode\u003eapp.yaml\u003c/code\u003e file is necessary to configure your Node.js application, and the \u003ccode\u003eruntime\u003c/code\u003e element is often the only required setting for basic Node.js applications in the standard environment.\u003c/p\u003e\n"],["\u003cp\u003eBefore creating additional \u003ccode\u003eapp.yaml\u003c/code\u003e files for other services, you must first create a file for the \u003ccode\u003edefault\u003c/code\u003e service of your application.\u003c/p\u003e\n"],["\u003cp\u003eApp Engine provides default values for settings like instance class and automatic scaling, but these can be overridden by specifying custom settings in the \u003ccode\u003eapp.yaml\u003c/code\u003e file.\u003c/p\u003e\n"],["\u003cp\u003eYou can give a custom name to your \u003ccode\u003eapp.yaml\u003c/code\u003e files, but you'll have to specify that custom file name when using the deployment command.\u003c/p\u003e\n"]]],[],null,["# Defining runtime settings\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\nAn App Engine app is configured using an `app.yaml`\nfile, that contains the runtime, handlers, scaling, and other general settings\nincluding environment variables.\n\n\nAbout `app.yaml` files\n----------------------\n\n\u003cbr /\u003e\n\nYou can specify the runtime configuration for your Node.js app, including versions and URLs, in the `app.yaml` file. This file acts as a deployment descriptor of a specific [service](/appengine/docs/standard/an-overview-of-app-engine) version.\n\n\u003cbr /\u003e\n\n\nYou must first create the `app.yaml` file for the `default` service of your app\nbefore you can create and deploy `app.yaml` files for additional services.\n\n\nGenerally, your `app.yaml` file requires only the `runtime` element for a simple\nNode.js app in the standard environment, for\nexample:\n\n\n runtime: nodejs24\n\n\nApp Engine provides default values for all other settings, including\nthe [F1 instance class](/appengine/docs/standard#instance_classes), which\ndetermines the memory and CPU resources that are available to your app, and\n[automatic scaling](/appengine/docs/standard/how-instances-are-managed#scaling_types),\nwhich controls how and when new instances of your app are created.\n\nIf you need to override the default settings, create an `app.yaml` file and\nspecify the settings you need. For more information, see\n[`app.yaml` file reference](/appengine/docs/standard/reference/app-yaml).\n\n\nYou can specify a unique name for your `app.yaml` files, but then you must\nspecify the file name with the [deployment\ncommand](/appengine/docs/standard/testing-and-deploying-your-app)\nas well. For example, if you name your `app.yaml` file `service-name-app.yaml`\nor `app.standard.yaml`, then you must deploy your app using either: \n\n gcloud app deploy service-name-app.yaml\n gcloud app deploy app.standard.yaml\n\nTo learn more about structuring multiple services and `app.yaml` files in your app, see [Structuring web services](/appengine/docs/standard/configuration-files).\n\n\u003cbr /\u003e\n\nAll configuration elements\n--------------------------\n\nFor a complete list of all the supported elements in this configuration file,\nsee the\n[`app.yaml` reference](/appengine/docs/standard/reference/app-yaml)."]]