Config
Caffeine comes with a built-in JSON config library.
As a config file is automatically created when you create your Interface, it is unlikely you will need to create your own separate configuration file.
Configuration Files
New
Caffeine.Config:New(name) : ConfigObject
This will create a new JSON file with the specified name.
Read
ConfigObject:Read(key, default) : value or default
Write
ConfigObject:Write(key, value)