Hi @AARZOO_MANOOSI ,
Which index is better depanding on type of queries and their operators … Just by looking on a sample documents we can never know.
Depanding on your server version , you may consider different strategies. Prior to 4.4 the main recommendation was Building massive indexes in MongoDB is best done in a rolling. Manner over replica sets:
But post 4.4 it depends on how impactful is the optimized index build. Read more here:
Ty