Understanding Remote Configuration
Explore how to enable remote configuration in Go programs with Viper and Cobra. Understand the use of centralized key-value stores such as etcd, Consul, and Firestore for dynamic configuration updates without redeployment. Learn the setup and integration steps to manage configs remotely for distributed applications.
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In the age of the cloud and distributed systems, applications often run in multiple instances or containers. Pushing a configuration change to all the instances simultaneously is often not trivial. With remote configuration, all the instances can read their configuration from a single source of truth.
Overview
Viper can work with multiple remote key-value stores as configuration sources. Remote configuration has the lowest priority, besides defaults. Configuration files, environment variables, and command-line arguments can all override it. Let’s discuss the key-value stores Viper supports as remote configuration sources.
Understanding remote key-value stores
Remote key-value stores can store and retrieve configuration data as key-value pairs. The data is stored in a central location and serves as a one-stop shop for the clients. This enables dynamic configuration because there is no need to re-deploy or even re-run the program with a new configuration file, ...