An example that demonstrates round-trip and query stats latency of Google Cloud Spanner operations.

This sample requires Java and Maven for building the application.

This sample includes 2 classes that demonstrate how to record Cloud Spanner's latencies.

• CaptureGrpcMetric - capture client round-trip latency.
• CaptureGfeMetric - capture Google Front End (GFE) latency.
• CaptureQueryStatsMetric - capture query stats latency.

1. Follow the set-up instructions in the documentation.

2. Enable APIs for your project. Click here to visit Cloud Platform Console and enable the Google Cloud Spanner API.

3. Create a Cloud Spanner instance and database via the Cloud Plaform Console's Cloud Spanner section.

4. Enable application default credentials by running the command gcloud auth application-default login.