The minimum time by which the deadline for each incoming message is extended.
While waiting for an ack or nack from the application the Cloud Pub/Sub C++ client library will extend the deadline by at least this amount. The default minimum extension is 1 minute. An application may wish to reduce this extension so that the Pub/Sub service will resend a message sooner when it does not hear back from a Subscriber. An application may wish to increase this extension time to avoid duplicate message delivery.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 webpage details the \u003ccode\u003eMinDeadlineExtensionOption\u003c/code\u003e within the Google Cloud Pub/Sub C++ client library, which controls the minimum time by which the deadline for each incoming message is extended.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMinDeadlineExtensionOption\u003c/code\u003e determines the minimum duration the client will extend a message's deadline while waiting for an acknowledgment (ack) or negative acknowledgment (nack) from the application, defaulting to 1 minute.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMinDeadlineExtensionOption\u003c/code\u003e can be adjusted to reduce the extension time, prompting the Pub/Sub service to resend the message sooner, or to increase it, which might prevent duplicate message deliveries.\u003c/p\u003e\n"],["\u003cp\u003eThe value for \u003ccode\u003eMinDeadlineExtensionOption\u003c/code\u003e must be between 10 seconds and 10 minutes, and it is also clamped to a maximum of the value of \u003ccode\u003eMaxDeadlineExtensionOption\u003c/code\u003e if that option is configured.\u003c/p\u003e\n"],["\u003cp\u003eThe type of \u003ccode\u003eMinDeadlineExtensionOption\u003c/code\u003e is an alias of \u003ccode\u003estd::chrono::seconds\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]
