go/example/otel-metrics

OpenTelemetry Metrics Example

This example demonstrates how to enable OpenTelemetry metrics for Redis operations using the extra/redisotel-native package.

Features

• ✅ OTLP exporter configuration
• ✅ Periodic metric export (every 10 seconds)
• ✅ Concurrent Redis operations
• ✅ Automatic metric collection for:
  • Operation duration
  • Connection metrics
  • Error tracking

Prerequisites

• Go 1.24.0 or later
• Redis server running on localhost:6379
• OTLP collector running on localhost:4317 (optional)

Running the Example

# Start Redis (if not already running)
redis-server

# Optional: Start OTLP collector
# See: https://opentelemetry.io/docs/collector/

# Run the example
go run main.go

What It Does

1. Creates an OTLP exporter that sends metrics to a collector
2. Sets up a meter provider with periodic export (every 10 seconds)
3. Initializes Redis client with OTel instrumentation
4. Executes concurrent Redis operations (SET commands)
5. Waits for metrics to be exported

Metrics Collected

The example automatically collects:

• db.client.operation.duration - Operation latency histogram
• db.client.connection.create_time - Connection creation time
• db.client.connection.count - Active connection count
• db.client.errors - Error counter with error type classification

Configuration

To use with a production OTLP collector:

exporter, err := otlpmetricgrpc.New(ctx,
    otlpmetricgrpc.WithEndpoint("your-collector:4317"),
    otlpmetricgrpc.WithTLSCredentials(credentials.NewClientTLSFromCert(certPool, "")),
)

See Also

• OpenTelemetry Go SDK
• OTLP Exporter Documentation
• Redis OTel Native Package