Install

What is Viper?

Why Viper?

Putting Values into Viper

Establishing Defaults

Reading Config Files

Writing Config Files

Watching and re-reading config files

Reading Config from io.Reader

Setting Overrides

Registering and Using Aliases

Working with Environment Variables

Env example

Working with Flags

Flag interfaces

Remote Key/Value Store Support

Remote Key/Value Store Example - Unencrypted

etcd

Consul

Firestore

Remote Key/Value Store Example - Encrypted

Watching Changes in etcd - Unencrypted

Getting Values From Viper

Accessing nested keys

Extracting a sub-tree

Unmarshaling

Marshalling to string

Viper or Vipers?

Working with multiple vipers

Q & A

Why is it called “Viper”?

Why is it called “Cobra”?

Does Viper support case sensitive keys?

Is it safe to concurrently read and write to a viper?

Troubleshooting