# README
ConfigCat SDK for Go
ConfigCat SDK for Go provides easy integration for your application to ConfigCat.
ConfigCat is a feature flag and configuration management service that lets you separate releases from deployments. You can turn your features ON/OFF using ConfigCat Dashboard even after they are deployed. ConfigCat lets you target specific groups of users based on region, email or any other custom user attribute.
ConfigCat is a hosted feature flag service. Manage feature toggles across frontend, backend, mobile, desktop apps. Alternative to LaunchDarkly. Management app + feature flag SDKs.
Getting started
1. Install the package with go
go get github.com/configcat/go-sdk/v5
2. Go to Connect your application tab to get your SDK Key:
3. Import the ConfigCat client package to your application
import "github.com/configcat/go-sdk/v5"
4. Create a ConfigCat client instance:
client := configcat.NewClient("#YOUR-SDK-KEY#")
5. Get your setting value:
isMyAwesomeFeatureEnabled, ok := client.GetValue("isMyAwesomeFeatureEnabled", false).(bool)
if ok && isMyAwesomeFeatureEnabled {
DoTheNewThing()
} else {
DoTheOldThing()
}
Or use the async SDKs:
client.GetValueAsync("isMyAwesomeFeatureEnabled", false, func(result interface{}) {
isMyAwesomeFeatureEnabled, ok := result.(bool)
if ok && isMyAwesomeFeatureEnabled {
DoTheNewThing()
} else {
DoTheOldThing()
}
})
6. Close ConfigCat client on application exit:
client.Close()
Getting user specific setting values with Targeting
Using this feature, you will be able to get different setting values for different users in your application by passing a User Object to the getValue() function.
Read more about Targeting here.
user := configcat.NewUser("#USER-IDENTIFIER#")
isMyAwesomeFeatureEnabled, ok := client.GetValueForUser("isMyAwesomeFeatureEnabled", user, false).(bool)
if ok && isMyAwesomeFeatureEnabled {
DoTheNewThing()
} else {
DoTheOldThing()
}
Polling Modes
The ConfigCat SDK supports 3 different polling mechanisms to acquire the setting values from ConfigCat. After latest setting values are downloaded, they are stored in the internal cache then all requests are served from there. Read more about Polling Modes and how to use them at ConfigCat Docs.
Need help?
Contributing
Contributions are welcome.