Go 1.11 はサポートが終了しており、2026 年 1 月 31 日に非推奨になります。非推奨になると、過去に組織のポリシーを使用して以前のランタイムのデプロイを再度有効にしていた場合でも、Go 1.11 アプリケーションをデプロイできなくなります。既存の Go 1.11 アプリケーションは、非推奨日以降も引き続き実行され、トラフィックを受信します。サポートされている最新バージョンの Go に移行することをおすすめします。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-04 UTC。"],[[["\u003cp\u003eApp Engine automatically retries tasks that fail, meaning any HTTP status code outside of 200-299, with a gradually decreasing retry rate, up to a maximum of once per hour.\u003c/p\u003e\n"],["\u003cp\u003eRetry settings can be configured for individual queues or specified within the \u003ccode\u003eTask\u003c/code\u003e type, with the latter taking precedence when both are defined.\u003c/p\u003e\n"],["\u003cp\u003eCustom retry schemes can be set up in \u003ccode\u003equeue.yaml\u003c/code\u003e, allowing control over the maximum number of retries and the time limit for retry attempts, as well as the interval between them.\u003c/p\u003e\n"],["\u003cp\u003eDifferent retry behaviors, such as a fixed number of retries, linearly increasing retry intervals, or exponentially increasing intervals followed by a linear increase and then indefinite retries, can be defined.\u003c/p\u003e\n"]]],[],null,["# Retrying Failed Push Tasks\n\nPush tasks being processed via a task queue can fail for many reasons. If a handler\nfails to execute a task (and therefore returns any HTTP status code outside of\nthe range 200--299), App Engine retries the task until it succeeds.\n| This API is supported for first-generation runtimes and can be used when [upgrading to corresponding second-generation runtimes](/appengine/docs/standard/\n| go\n| /services/access). If you are updating to the App Engine Go 1.12+ runtime, refer to the [migration guide](/appengine/migration-center/standard/migrate-to-second-gen/go-differences) to learn about your migration options for legacy bundled services.\n\nBy default, the system gradually reduces the retry rate to avoid overloading your application with too many\nrequests, but schedules retry attempts to recur at a maximum of once per hour\nuntil the task succeeds.\n\n| **Important:** Retry options can be configured for the queue as well specified on the [`Task`](/appengine/docs/legacy/standard/go111/taskqueue/reference#RetryOptions) type. When both are specified, the **latter** takes precedence.\n\nRetrying tasks\n--------------\n\nYou can customize your own scheme for task retries by\nadding the [retry\nparameters](/appengine/docs/legacy/standard/go111/config/queueref#retry_parameters)\nelement in [`queue.yaml`](/appengine/docs/legacy/standard/go111/config/queueref). This\naddition allows you to specify the maximum number of times to retry failed tasks\nin a specific queue. You can also set a time limit for retry attempts and\ncontrol the interval between attempts.\n\nThe following example demonstrates various retry scenarios:\n\n- In `fooqueue`, tasks are retried up to seven times and for up to two days from the first execution attempt. After both limits are passed, it fails permanently.\n- In `barqueue`, App Engine attempts to retry tasks, increasing the interval linearly between each retry until reaching the maximum backoff and retrying indefinitely at the maximum interval (so the intervals between requests are 10s, 20s, 30s, ..., 190s, 200s, 200s, ...).\n- In `bazqueue`, the retry interval starts at 10s, then doubles three times, then increases linearly, and finally retries indefinitely at the maximum interval (so the intervals between requests are 10s, 20s, 40s, 80s, 160s, 240s, 300s, 300s, ...).\n\n queue:\n - name: fooqueue\n rate: 1/s\n retry_parameters:\n task_retry_limit: 7\n task_age_limit: 2d\n - name: barqueue\n rate: 1/s\n retry_parameters:\n min_backoff_seconds: 10\n max_backoff_seconds: 200\n max_doublings: 0\n - name: bazqueue\n rate: 1/s\n retry_parameters:\n min_backoff_seconds: 10\n max_backoff_seconds: 300\n max_doublings: 3\n\nWhat's next\n-----------\n\n- Learn more about the [task queue parameters](/appengine/docs/legacy/standard/go111/config/queueref)."]]
