GCS Bigtable

For latency-sensitive applications, however, we recommend that you plan at least 2x capacity for your application's max Bigtable queries per second (QPS). This capacity ensures that your Bigtable cluster runs at less than 50% CPU load, so it can offer low latency to front-end services. This capacity also provides a buffer for traffic spikes or key-access hotspots, which can cause imbalanced traffic among nodes in the cluster.