The twelve-factor app uses strict separation between the build, release, and run stages.
For example, it is impossible to make changes to the code at runtime, since there is no way to propagate those changes back to the build stage.
Every release should always have a unique release ID, such as a timestamp of the release (such as 2011-04-06-20:32:17 ) or an incrementing number (such as v100 ).
Releases are an append-only ledger and a release cannot be mutated once it is created.
Any change must create a new release. Cheers!!
