A number of environment variables can be used to configure the behavior of the library. There are also functions to configure this behavior in code. The environment variables are convenient when troubleshooting problems.
Endpoint Overrides
GOOGLE_CLOUD_CPP_CLOUD_REDIS_CLUSTER_ENDPOINT=... overrides the EndpointOption (which defaults to "redis.googleapis.com") used by MakeCloudRedisClusterConnection().
GOOGLE_CLOUD_CPP_CLOUD_REDIS_ENDPOINT=... overrides the EndpointOption (which defaults to "redis.googleapis.com") used by MakeCloudRedisConnection().
GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc: turns on tracing for most gRPC calls. The library injects an additional Stub decorator that prints each gRPC request and response. Unless you have configured your own logging backend, you should also set GOOGLE_CLOUD_CPP_ENABLE_CLOG to produce any output on the program's console.
See Also
google::cloud::TracingComponentsOptionGOOGLE_CLOUD_CPP_TRACING_OPTIONS=...: modifies the behavior of gRPC tracing, including whether messages will be output on multiple lines, or whether string/bytes fields will be truncated.
See Also
google::cloud::GrpcTracingOptionsOptionGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes: turns on logging in the library, basically the library always "logs" but the logging infrastructure has no backend to actually print anything until the application sets a backend or they set this environment variable.
[[["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 2025-03-05 UTC."],[[["This page details environment variables and versioned documentation for configuring the behavior of the C++ library, focusing on the Redis environment."],["The latest release candidate version is 2.37.0-rc, with documentation available, along with a list of previous versions spanning from 2.36.0 down to 2.11.0."],["Environment variables such as `GOOGLE_CLOUD_CPP_CLOUD_REDIS_CLUSTER_ENDPOINT` and `GOOGLE_CLOUD_CPP_CLOUD_REDIS_ENDPOINT` allow overriding endpoint options for Redis connections."],["Tracing for gRPC calls can be enabled using `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, which requires setting `GOOGLE_CLOUD_CPP_ENABLE_CLOG` for console output, and the behavior of tracing can be modified with `GOOGLE_CLOUD_CPP_TRACING_OPTIONS`."],["`GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes` will enable logging in the library, and the default project can be set using `GOOGLE_CLOUD_PROJECT`, although it has no effect within the library itself."]]],[]]
