Slow performant query in Arangodb

Question

Hypothetically I have two collections.

users (document type)and relations (edge type)

Relations collection has two attributes {user1, user2} and is indexed combined.

My following query is extremely slow:

FOR r in relations filter (r.user1 == 'xyz' && r.user2 == 'abc') || (r.user1 == 'abc' && r.user2 == 'xyz') RETURN r

With 800 users and 5000 relationship it takes 35 seconds.

Answer 1

I didn't create the indexes properly before. I recreated the indexes again and then the performance was improved.