Connections need to perform background work on behalf of the application. Normally they just create a background thread and a CompletionQueue for this work, but the application may need more fine-grained control of their threads.
In this case the application can provide its own BackgroundThreadsFactory and it assumes responsibility for creating one or more threads blocked on its CompletionQueue::Run().
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14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 latest version available is 2.37.0-rc, with numerous other versions, starting at 2.10.1, also listed for reference.\u003c/p\u003e\n"],["\u003cp\u003eThis documentation details the \u003ccode\u003eBackgroundThreadsFactory\u003c/code\u003e and the application's ability to define it for finer control over background threads.\u003c/p\u003e\n"],["\u003cp\u003eConnections usually manage background work by creating a thread and a \u003ccode\u003eCompletionQueue\u003c/code\u003e, but applications can supply their own \u003ccode\u003eBackgroundThreadsFactory\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe options \u003ca href=\"/cpp/docs/reference/common/2.14.0/structgoogle_1_1cloud_1_1GrpcBackgroundThreadPoolSizeOption\"\u003e\u003ccode\u003eGrpcBackgroundThreadPoolSizeOption\u003c/code\u003e\u003c/a\u003e, \u003ca href=\"/cpp/docs/reference/common/2.14.0/structgoogle_1_1cloud_1_1GrpcCompletionQueueOption\"\u003e\u003ccode\u003eGrpcCompletionQueueOption\u003c/code\u003e\u003c/a\u003e, and \u003ca href=\"/cpp/docs/reference/common/2.14.0/structgoogle_1_1cloud_1_1GrpcBackgroundThreadsFactoryOption\"\u003e\u003ccode\u003eGrpcBackgroundThreadsFactoryOption\u003c/code\u003e\u003c/a\u003e are mutually exclusive.\u003c/p\u003e\n"]]],[],null,[]]
