The maximum time by which the deadline for each incoming message is extended.
While waiting for an ack or nack, The Cloud Pub/Sub C++ client library will extend the deadline by at most this amount. The default extension time is 10 minutes. An application may wish to reduce this extension time so the Pub/Sub service will resend a message sooner when it does not hear back from a Subscriber. With at-least-once semantics, making the time too short may increase the number of duplicate messages delivered by the service.
The value is clamped between 10 seconds and 10 minutes. Note that this option also affects the effective range for MinDeadlineExtensionOption.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThe content lists different versions of the \u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e for the Cloud Pub/Sub C++ client library, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e is used to define the maximum duration the library extends message deadlines while waiting for acknowledgments or negative acknowledgments (acks/nacks).\u003c/p\u003e\n"],["\u003cp\u003eThe default deadline extension time is 10 minutes, but this can be reduced, although reducing it too much might increase duplicate message delivery due to at-least-once semantics.\u003c/p\u003e\n"],["\u003cp\u003eThe extension time value is constrained between 10 seconds and 10 minutes, and it affects the range of \u003ccode\u003eMinDeadlineExtensionOption\u003c/code\u003e as well.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e is an alias of \u003ccode\u003estd::chrono::seconds\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]
