[[["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)：2025-08-21。"],[[["\u003cp\u003eApp Engine flexible environment runtimes utilize open-source components, regularly updated with security and bug fixes during their General Availability (GA) support window.\u003c/p\u003e\n"],["\u003cp\u003eWhen a language version is no longer maintained by its community, App Engine will cease support for that runtime, providing customer notifications before this occurs.\u003c/p\u003e\n"],["\u003cp\u003eCustom runtimes, allowing users to define unique environments, are not subject to the standard runtime lifecycle policy.\u003c/p\u003e\n"],["\u003cp\u003eApp Engine issues in-app notifications 90 days before a runtime reaches its end of support, urging users to upgrade to a supported version.\u003c/p\u003e\n"],["\u003cp\u003eApplications using decommissioned runtimes may be disabled without further notice and will not be eligible for technical support.\u003c/p\u003e\n"]]],[],null,["# Runtime lifecycle\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nThe App Engine flexible environment [runtimes](/appengine/docs/flexible) use open source components\nthat are maintained by their respective communities. The runtimes are\nidentified by their language version, for example, Java 17, Python 3.10, and so forth.\n\nGoogle provides support for a runtime during [General availability (GA)](/products#product-launch-stages). During this support window:\n\n- Runtime components are regularly updated with security and bug fixes.\n- To maintain stability, App Engine avoids implementing breaking features or changes into the runtime. Breaking changes will be announced in advance on the runtime-specific [release notes](/appengine/docs/flexible/resources#release-notes).\n\nWhen a language version is no longer actively maintained by the respective community,\nApp Engine will also stop providing maintenance and support for that language runtime.\nBefore a runtime reaches the end of support phase as described in the [runtimes support schedule](/appengine/docs/flexible/lifecycle/support-schedule), Google will provide a notification to customers.\n\nGoogle may make changes to any runtime's support schedule or lifecycle in accordance with the terms of your agreement for the use of Google Cloud platform services.\n\nCustom runtimes\n---------------\n\n[Custom runtimes](/appengine/docs/flexible/custom-runtimes/about-custom-runtimes)\nallow you to define new runtime environments which may include additional components\nlike language interpreters or application servers.\n\nCustom runtimes are not impacted by the runtime lifecycle policy.\n\nRuntime lifecycle\n-----------------\n\n### Notification period\n\nApp Engine will begin issuing in-app notifications 90 days before the application\nreaches end of support. Upon notification, you should prepare to upgrade your application to a newer\nruntime that is supported in the flexible environment\n.\n\n### End of support\n\n| **Important:** Google will no longer apply security updates or patches to components of the runtime environment that have reached end of support. To continue receiving security updates, we strongly encourage you to upgrade your application to a supported runtime version as soon as it becomes available.\n\nWhen runtime components reach the end of support date:\n\n- Google will no longer apply security updates or patches to components of the runtime environment.\n- Your application will continue to run and receive traffic.\n- You will no longer be able to create and/or update the application on the unsupported runtime.\n- Issues arising from the use of an unsupported runtime will not be eligible for technical support\n\nWe strongly encourage you to upgrade your application to a supported runtime version as soon as it becomes available to continue receiving security updates and being eligible for technical support.\nAlternatively, you can redeploy your application using a [custom runtime](/appengine/docs/flexible/custom-runtimes/about-custom-runtimes).\n\n### Deprecated\n\nIf Google allowed your Organization to re-enable deployments in an unsupported runtime, Google will remove that ability once the runtime is deprecated.\n\nWhere practicable, we will make reasonable efforts to notify you in advance of the deprecation by in-app notifications or other means. In certain instances, including in circumstances involving critical security vulnerabilities or similar high severity issues, advance notice may not be practicable.\n\n### Decommissioned\n\nApplications that continue to use a decommissioned runtime may be disabled without further notice. You must choose a more up-to-date runtime to deploy your application.\n\nSee the runtimes [support schedule](/appengine/docs/flexible/lifecycle/support-schedule) for key dates."]]
