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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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\u003eThis page details the \u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e for the Cloud Pub/Sub C++ client library, which controls the maximum time the client extends the deadline for incoming messages while waiting for acknowledgment.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version is 2.37.0-rc, and the page also provides links to documentation for versions from 2.36.0 down to 2.11.0 of the pubsub package.\u003c/p\u003e\n"],["\u003cp\u003eThe default extension time for the deadline is 10 minutes, but users can adjust it, with a clamped range of 10 seconds to 10 minutes.\u003c/p\u003e\n"],["\u003cp\u003eAdjusting the \u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e affects the delivery of messages and can influence the frequency of duplicate message delivery with at-least-once semantics.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e's value also impacts the effective range of the \u003ccode\u003eMinDeadlineExtensionOption\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]
