The number of bookies you should run in a BookKeeper cluster depends on the quorum mode that you've chosen, the desired throughput, and the number of clients using the cluster simultaneously.
Quorum type | Number of bookies |
---|---|
Self-verifying quorum | 3 |
Generic | 4 |
Increasing the number of bookies will enable higher throughput, and there is no upper limit on the number of bookies.