Is it possible to using Blue/Green Deployment to deploy Odoo application?

I think database updating and migrating will be the hardest part to do.

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For example, if I have single database and try to use Blue/Green Deployment.

Now, A service is in version 1.0 and B service is going to upgrade to version 2.0.

Some models and fields will be changed in version 2.0, so this means database table structure will be changed.

And service A still accept users' requests, means records in database will be modified.

How to deal with the conflict between different services in single database?

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Does anyone have experience about this area could share?