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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 focuses on the \u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e within the Google Cloud Pub/Sub C++ client library, detailing its functionality across multiple versions.\u003c/p\u003e\n"],["\u003cp\u003eThis option controls the maximum time the client will extend a message's deadline while waiting for an acknowledgment or negative acknowledgment.\u003c/p\u003e\n"],["\u003cp\u003eThe default maximum extension time is 10 minutes, but it can be adjusted between 10 seconds and 10 minutes, impacting the rate of potential duplicate messages.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e also influences the effective range for \u003ccode\u003eMinDeadlineExtensionOption\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe underlying type for this option is an alias for \u003ccode\u003estd::chrono::seconds\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]
