您如何确定在Google Dataflow流媒体管道中配置多少资源？

I'm curious how to decide on how to provision resources for Apache Beam pipelines running on Google's Dataflow platform. I've built a streaming pipeline (Beam Java 2.0.0) that takes a PubSub JSON string, transforms it to a BQ TableRow, then routes it to the correct tables. There are also two transforms within the pipeline, one with a 5 minute sliding window every minute and another window with a 1 minute fixed time duration.I'm curious how to decide on how to provision r