Spring data reactive cassandra: limit concurrent threads

Question

I want to limit concurrent threads when some operation in cassandra is being performed. It could be limited with direct use of cassandraTemplate like this:

public void insert(List<MyEntity> entities, int maxConcurrentThreadsAllowed) {
    Flux.fromIterable(entities)
            .flatMap(this::insert, maxConcurrentThreadsAllowed)
            .subscribe();
}

public Mono<MyEntity> insert(MyEntity e) {
    return cassandraTemplate.insert(e);
}

Is it possible to achieve the same using reactive repositories? Some kind of configuration on cassandraSession level?