Hi @Nabil_Ben,
I think you are confusing the amount of connection pool database connections vs amount of concurrent realm requests.
The M30 does allow 3000 database connections but it does not block realm users from running an unlimited amount of concurrent requests against the realm application.
Realm smartly utelize connection pooling to the Atlas database therefore should never reach this limitation while still allowing your application users running 10s of thousands of requests(in min) as long as they don’t saturrate other database resources… Eventually 3000 concurrent database connection should sustain millions of daily requests.
Realm is built for startups and allow you a scalable backend which can run on any atlas tier including free clusters.
Best
Pavel