Where does it make sense to use Elasticsearch?

Question

Database

Good day..
Where does it make sense to use Elasticsearch?
That that in search on query - is clear. This is clear.
But here: is it necessary?

1. Count (Model.count in monge)
2. Find some post by id or author id
3. User search by id
4. Search all users sorted by field let's say "score" + pagination

Is it worth it to transfer some of these operations into the hands of Elastic? Or do not bother, do not rewrite a bunch of code, and use Elastic only in the search by query that came from the clientside?

Answer 1

The question sounds quite interesting "I use a DBMS that provides me with a bunch of tools for working with data, and there is also a search engine, can I rewrite part of the DBMS functionality with crutches and bicycles using a search engine, how do you like the idea?"