I have created read replica of RDS production database for reporting purposes. Cross-team is using the replica for their use.
Consumers of this replica are looking for additional indexes for faster search, but the developers are not in favour of that (adding these indexes to master) concerning more time for the insertion of records in the master database.
Is it possible to add index only on read replica of MySQL database? How this is practised in the industry? Or what other ways this problem could be solved?