Documentation
¶
Overview ¶
Package memcache provides functions to trace the bradfitz/gomemcache package (https://github.com/bradfitz/gomemcache).
`WrapClient` will wrap a memcache `Client` and return a new struct with all the same methods, so should be seamless for existing applications. It also has an additional `WithContext` method which can be used to connect a span to an existing trace.
Example ¶
package main
import (
"context"
memcachetrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/bradfitz/gomemcache/memcache"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/tracer"
"github.com/bradfitz/gomemcache/memcache"
)
func main() {
span, ctx := tracer.StartSpanFromContext(context.Background(), "parent.request",
tracer.ServiceName("web"),
tracer.ResourceName("/home"),
)
defer span.Finish()
mc := memcachetrace.WrapClient(memcache.New("127.0.0.1:11211"))
// you can use WithContext to set the parent span
mc.WithContext(ctx).Set(&memcache.Item{Key: "my key", Value: []byte("my value")})
}
Output:
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Client ¶
A Client is used to trace requests to the memcached server.
func WrapClient ¶
func WrapClient(client *memcache.Client, opts ...ClientOption) *Client
WrapClient wraps a memcache.Client so that all requests are traced using the default tracer with the service name "memcached".
type ClientOption ¶
type ClientOption = v2.ClientOption
ClientOption represents an option that can be passed to Dial.
func WithAnalytics ¶ added in v1.11.0
func WithAnalytics(on bool) ClientOption
WithAnalytics enables Trace Analytics for all started spans.
func WithAnalyticsRate ¶ added in v1.11.0
func WithAnalyticsRate(rate float64) ClientOption
WithAnalyticsRate sets the sampling rate for Trace Analytics events correlated to started spans.
func WithServiceName ¶
func WithServiceName(name string) ClientOption
WithServiceName sets the given service name for the dialled connection.
Source Files