Using Environment Variables for Database Credentials (learncodeshare.net)

Another approach/method to dealing with identifiers, tokens, or system information (hostnames associated with your REST/DB/etc. calls) is to utilize serialized JSON/YAML. Also stored as KV pairs you can open/process/assign in your porject code. Thus keeping sensitive hard coded data elements out.

Really they are much of the same. Just a slightly different approach.