Actually, my data is kind of static, once I indexed it, I will not add more to it.
What if I index more data to both single node and the cluster, the single node would be slower than the cluster one?
Can I say the cluster cannot improve the single query time, however, it would increase the capability to handle the high concurrency query? By the way, for the cluster do I need to change the thread pool setting in order to improve the concurrency capability?
I really appreciate your time and efforts regarding this.