Disagree. If you need a global locking mechanism that all of your back ends can agree on without setting up an additional service, advisory locks are a totally

Disagree. If you need a global locking mechanism that all of your back ends can agree on without setting up an additional service, advisory locks are a totally valid use case. All of your back ends already have access to the DB, why bring in another whole service for just the locking that is required to implement some small thing in your giant SaaS product? Just lean on PG and you can go really far.