[[["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 Backends API, initially designed for non-user-facing compute with extended timeouts, is being shut down.\u003c/p\u003e\n"],["\u003cp\u003eThe need for the Backends API was diminished after the introduction of backend instances and scaling controls to Services.\u003c/p\u003e\n"],["\u003cp\u003eAs of March 13, 2019, the Backends API will cease to function, and all existing Backend versions will be shut down.\u003c/p\u003e\n"],["\u003cp\u003eUsers are advised to migrate their Backends to Services, with migration guides available for Python, Java, and Go.\u003c/p\u003e\n"],["\u003cp\u003eFor code requiring more than 60 seconds to run, alternatives such as Cloud Tasks, Kubernetes Engine, or Compute Engine are recommended.\u003c/p\u003e\n"]]],[],null,["# App Engine Backends API Shutdown\n\nThe Backends API was originally introduced as way to provide non user-facing\ncompute, with longer timeouts, different instance sizes, etc.\n\nBeginning in 2014, we started recommending Modules, which were eventually\nrenamed to Services. During that time, we added\n[backend instances](/appengine/docs/standard#instance_classes) (`B_*`) and\n[scaling controls](/appengine/docs/standard/python/config/appref#scaling_elements)\nto all Services, thus removing much of the need for a separate Backends API.\n\nOn **March 13, 2019**, we will shut down the Backends API and all existing\nBackend versions. You will no longer be able to deploy new Backends or modify\nexisting Backends, and these versions will stop serving traffic.\n\nMigration\n---------\n\nPlease follow our migration guides for\n[Python](/appengine/docs/standard/python/modules/converting),\n[Java](/appengine/docs/standard/java/modules/converting), and\n[Go](/appengine/docs/standard/go/modules/converting) to convert your Backends\nto Services.\n\nIf you need to run code for longer than 60 seconds, consider migrating to\n[Cloud Tasks](/tasks) (10 minute timeout),\n[Kubernetes Engine](/kubernetes-engine), or [Compute Engine](/compute)\n(indefinite)."]]