Of course you can use an ORM with Golang, and will have reduced throughput. However, I wonder how much you can profile for both languages and fix the bottlenecks by rewriting things. It can also depend on the machine and how the VM allocates the threads and memory allocation (for example multi chiplet, multi rambank support).
Ecto isn’t an ORM it’s two things 1) an Elixir DSL for building SQL Queries 2) Ecto.Changeset a system for validating and managing data changes before they go into your database.
I think bad database design can happen anywhere and good database design can happen in a PHP application. It’s not necessarily language dependent and always refactoring technical debt on the database design can be some of the most productive changes you can make to a service.
