Option for google::cloud::Options to indicate which replicas or regions should be used for reads/queries in read-only or single-use transactions.
Use of DirectedReadOptions within a read-write transaction will result in a kInvalidArgument error.
The IncludeReplicas variant lists the replicas to try (in order) to process the request, and what to do if the list is exhausted without finding a healthy replica.
Alternately, the ExcludeReplicas variant lists replicas that should be excluded from serving the request.
Type Aliases
Type
Alias Of: absl::variant< absl::monostate, IncludeReplicas, ExcludeReplicas >
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-14 UTC."],[[["The page provides documentation for `DirectedReadOption`, a feature to specify which replicas or regions to use for reads in read-only or single-use transactions within the Google Cloud Spanner C++ client library."],["`DirectedReadOption` should not be used within read-write transactions, as it will result in a `kInvalidArgument` error."],["The latest release is 2.37.0-rc, with multiple documented versions going back to version 2.11.0."],["`DirectedReadOption` uses either `IncludeReplicas` to list replicas to try or `ExcludeReplicas` to list replicas to exclude."],["The type alias of `DirectedReadOption` is `absl::variant\u003c absl::monostate, IncludeReplicas, ExcludeReplicas \u003e`."]]],[]]
