### Setup Fresh HTTP Framework in Go

Source: https://github.com/blanet/freshing-docs/blob/main/README.md

This Go code snippet demonstrates how to set up and run the Fresh HTTP framework. It initializes the framework and starts its main loop. Ensure your Go environment is properly configured for this to run.

```go
frame, err := fresh.Setup()
if err != nil {
    log.Fatal(err)
}

frame.Spin()

```

--------------------------------

### Register Custom Metrics for Tracing and Metrics in Go

Source: https://github.com/blanet/freshing-docs/blob/main/README.md

This Go function `initTraceMetrics` registers several custom metrics used for tracing and metrics collection. It utilizes a 'bt' and 'cosyModel' package, suggesting integration with a specific monitoring or tracing system. These metrics capture counts and actions related to embedding caches and HTTP requests.

```go
func initTraceMetrics() {
	bt.RegisterCustomMetric(cosyModel.MetricGetEmbeddingCacheCount, cosyModel.TagModelName)
	bt.RegisterCustomMetric(cosyModel.MetricGetEmbeddingCacheHitCount, cosyModel.TagModelName)
	bt.RegisterCustomMetric(cosyModel.MetricSetEmbeddingCacheCount, cosyModel.TagModelName)
	bt.RegisterCustomMetric(cosyModel.MetricSetEmbeddingCacheErrCount, cosyModel.TagModelName)
	bt.RegisterCustomMetric(cosyModel.MetricHTTPPodAction, cosyModel.TagAction, cosyModel.TagCode)
	bt.RegisterCustomMetric(cosyModel.MetricHTTPRecallAction, cosyModel.TagAction, cosyModel.TagCode)
}

```

--------------------------------

### JSON-RPC 2.0 Request Structure Interface in Go

Source: https://github.com/blanet/freshing-docs/blob/main/README.md

This Go code defines the `Request` interface for JSON-RPC 2.0 messages that invoke a method. It extends a `Message` interface and specifies methods to retrieve the method name and parameters. The `isJSONRPC2Request` method is an internal marker for type checking.

```go
// Request is the shared interface to jsonrpc2 messages that request
// a method be invoked.
// The request types are a closed set of *Call and *Notification.
type Request interface {
	Message
	// Method is a string containing the method name to invoke.
	Method() string
	// Params is a JSON value (object, array, null, or "") with the parameters of the method.
	Params() json.RawMessage
	// isJSONRPC2Request is used to make the set of request implementations closed.
	isJSONRPC2Request()
}

```

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