LaunchDarkly Server-side SDK for Go - Redis integration with Redigo client

This library provides a Redis-backed persistence mechanism (data store) for the LaunchDarkly Go SDK, replacing the default in-memory data store.

The Redis API implementation it uses is Redigo. There are other Redis client implementations for Go; if LaunchDarkly SDK Redis integrations using other Redis clients are released, they will be in separate repositories.

This version of the library requires at least version 6.0.0 of the LaunchDarkly Go SDK; for versions of the library to use with earlier SDK versions, see the changelog.

The minimum Go version is 1.18.

For more information, see also: Using a persistent feature store.

Quick setup

This assumes that you have already installed the LaunchDarkly Go SDK.

1. Import the LaunchDarkly SDK packages and the package for this library:

import (
    ld "github.com/launchdarkly/go-server-sdk/v7"
    "github.com/launchdarkly/go-server-sdk/v7/ldcomponents"
    ldredis "github.com/launchdarkly/go-server-sdk-redis-redigo/v3"
)

2. When configuring your SDK client, add the Redis data store as a PersistentDataStore. You may specify any custom Redis options using the methods of RedisDataStoreBuilder. For instance, to customize the Redis URL:

    var config ld.Config{}
    config.DataStore = ldcomponents.PersistentDataStore(
        ldredis.DataStore().URL("redis://my-redis-host"),
    )

By default, the store will try to connect to a local Redis instance on port 6379.

Caching behavior

The LaunchDarkly SDK has a standard caching mechanism for any persistent data store, to reduce database traffic. This is configured through the SDK's PersistentDataStoreBuilder class as described the SDK documentation. For instance, to specify a cache TTL of 5 minutes:

    var config ld.Config{}
    config.DataStore = ldcomponents.PersistentDataStore(
        ldredis.DataStore(),
    ).CacheMinutes(5)

LaunchDarkly overview

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About LaunchDarkly

• LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
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  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
• LaunchDarkly provides feature flag SDKs for a wide variety of languages and technologies. Read our documentation for a complete list.
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