A model registry on the Build Your Own AI Platform track. The registry lists models, versions, owners, metrics, and the artifact location. Production points at a version, not at a file someone uploaded yesterday.
This lesson assumes you already worked through Users and tenants.
The idea in practice
A version is immutable. A new train creates a new version. Promotion is a separate, logged action.
A concrete check
goal = {
'track': 'Build Your Own AI Platform',
'lesson': 'A model registry',
}
checks = [
'input available at decision time',
'score matches the real decision',
'failure case written down',
]
print(goal['lesson'])
for item in checks:
print('-', item)
Run the sketch locally if you have Python. The printout is a reminder of the checks, not a trained model. Replace the strings with the real inputs from your own example before you treat it as a design.
What usually goes wrong
Overwriting the 'latest' file in place. When this happens, stop adding parameters or tools. Fix the check, the data, or the permission, then run the same example again.
What to write down
- The input you are allowed to use at decision time.
- The output and the score or pass rule.
- One failure you will test on purpose.
- What you will not claim the system can do.
Practice
Draw version, stage, and artifact url for one model.
Self-check
- Say A model registry in one sentence that mentions an input and an output.
- Name the failure mode in this lesson and the check that would catch it.
Done when: you can explain this lesson without the page open, and you have a written failure case.