A pseudo user identifier for charging per-user quotas. If not specified, the authenticated principal is used. If there is no authenticated principal, the client IP address will be used. When specified, a valid API key with service restrictions must be used to identify the quota project. Otherwise, this parameter is ignored.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-30 UTC."],[[["The latest version available is 2.37.0-rc, with links to documentation for all versions down to 2.10.1."],["This page documents the `QuotaUserOption`, which allows configuration of a pseudo user identifier for charging per-user quotas."],["If `QuotaUserOption` is not specified, the authenticated principal or client IP address is used for quota tracking."],["When specified, a valid API key with service restrictions is required to identify the quota project, or else the parameter is ignored."],["The `QuotaUserOption` is an alias of `std::string`."]]],[]]
