[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-08-20。"],[[["\u003cp\u003eThe App Engine standard environment utilizes container instances on Google's infrastructure, preconfigured with various runtimes to support application deployment.\u003c/p\u003e\n"],["\u003cp\u003eThis environment ensures reliable application performance even under heavy loads and with large data volumes by using a secure, sandboxed system that distributes requests and scales servers automatically.\u003c/p\u003e\n"],["\u003cp\u003eThe standard environment supports a range of languages, including Go, Java, Node.js, PHP, Python, and Ruby, to accommodate different development preferences.\u003c/p\u003e\n"],["\u003cp\u003eInstance classes, such as F1, F2, B1, and B2, dictate the memory and CPU resources available to each instance, directly impacting the application's performance and operational costs.\u003c/p\u003e\n"],["\u003cp\u003eWhile the standard environment offers a free quota of data storage and traffic, it also incorporates certain system limits to maintain its stability and ensure optimal functionality.\u003c/p\u003e\n"]]],[],null,["# App Engine standard environment\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\nThe App Engine standard environment is based on container instances\nrunning on Google's infrastructure. Containers are preconfigured with one of\nseveral available runtimes.\n\nThe standard environment makes it easy to build and deploy an\napplication that runs reliably even under heavy load and with large amounts of\ndata.\n\nApplications run in a secure, sandboxed environment, allowing the\nstandard environment to distribute requests across multiple\nservers and scale servers to meet traffic demands. Your application runs\nwithin its own secure, reliable environment that is independent of the hardware,\noperating system, or physical location of the server.\n\nStandard environment languages and runtimes\n-------------------------------------------\n\nThe standard environment supports the following languages: \n[Go](/appengine/docs/standard/go/runtime) \n[Java](/appengine/docs/standard/java-gen2/runtime) \n[Node.js](/appengine/docs/standard/nodejs/runtime) \n[PHP](/appengine/docs/standard/php-gen2/runtime) \n[Python](/appengine/docs/standard/python3/runtime) \n[Ruby](/appengine/docs/standard/ruby/runtime)\n\nInstance classes\n----------------\n\nThe *instance class* determines the amount of memory and CPU available to each\ninstance, the amount of [free quota](/appengine/docs/standard/quotas#Instances), and the\n[cost per hour](/appengine/pricing#standard_instance_pricing) after your app\nexceeds the free quota.\n\nFor all runtime generations, the memory limit includes the memory your app uses\nalong with the memory that the runtime itself needs to run your app. The Java\nruntimes use more memory to run your app than other runtimes.\n\nTo override the default instance class, use the [`instance_class`\nsetting](/appengine/docs/standard/python3/config/appref#instance_class) in your\napp's `app.yaml` file.\n\nThe CPU values and limits reported in the instance class table don't reflect a\nfixed clock speed in the CPU. Instead, they represent the instance's\nallocated relative compute power or performance tier on the\n[shared-core](/compute/docs/general-purpose-machines#n1-shared-core) instance\ntype.\n\nSystem tools might report the total physical memory of the underlying host\nmachine. This is different from the instance's enforced memory limit, which is\nthe maximum memory available to the instance's isolated sandbox environment.\nExceeding this \"Memory Limit\", not the host's total RAM, might cause\nperformance issues.\n| **Important:** When you [view your bill](/billing/docs/how-to/reports), you will not see the names of the individual instance classes in your billing line items. Instead, you see instance hours from the \"B\" classes reported as \"Backend Instances\", and instance hours from the \"F\" classes reported as \"Frontend Instances\". The bill will apply the appropriate multiple of instance hours for each instance class you use. For example, if you use an F4 instance for one hour, you see \"Frontend Instance\" billing for four instance hours at the F1 rate.\n\nQuotas and limits\n-----------------\n\nThe standard environment gives you 1 GiB of\ndata storage and traffic for free, which can be increased by enabling paid\napplications. However, some features impose limits unrelated to quotas to\nprotect the stability of the system. For more details on quotas, including how\nyou can edit them to suit your needs, see [Quotas](/appengine/docs/standard/quotas).\n\nTry it for yourself\n-------------------\n\n\nIf you're new to Google Cloud, create an account to evaluate how\nApp Engine performs in real-world\nscenarios. New customers also get $300 in free credits to run, test, and\ndeploy workloads.\n[Try App Engine free](https://console.cloud.google.com/freetrial)"]]
