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_MEMCACHE_ENDPOINT=... overrides the EndpointOption (which defaults to "memcache.googleapis.com") used by MakeCloudMemcacheConnection().
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."],[[["The latest release candidate version for the C++ memcache library is 2.37.0-rc, with version 2.13.0 being the lowest version listed, and many other versions are also accessible via the provided links."],["Environment variables can be utilized to adjust the library's behavior, providing an alternative to in-code configuration, and these variables are useful when debugging."],["The `GOOGLE_CLOUD_CPP_CLOUD_MEMCACHE_ENDPOINT` environment variable can override the default endpoint used by `MakeCloudMemcacheConnection()`."],["Tracing for gRPC calls can be activated using the `GOOGLE_CLOUD_CPP_ENABLE_TRACING` environment variable, allowing the printing of gRPC requests and responses, and when enabled, `GOOGLE_CLOUD_CPP_ENABLE_CLOG` should also be set."],["Setting the environment variable `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes` enables logging in the library, which allows the program to print the logging from the library in the console."]]],[]]
