Efficiently create many records

Problem

We need a way to efficiently insert many rows of data. For small amounts of data, a simple batch API might be sufficient, as the database can handle all the operations in a short time. This could either be exposed through operations similar to our nested `create` API as described below, or through a new Batch API as described in https://github.com/prisma/prisma-client-js/issues/667. For large amounts of data, we need to support breaking the large number of create operations into smaller batches. In order to optimise throughput, you need to balance two things: provide large enough work packages such that network latency doesn't dominate the actual work, and keep the work packages small enough to not overwhelm the database. This could be exposed through a batch API with configurable batch size, or through a streaming API with buffering support. Original issue I think is quite common the need of having to create or upsert many records on a database at the same time, at least is a feature I see in many other ORMs. Right now is posible to create many records using a nested write like this [code block] But sometimes you just want to create many records, in this case the only thing I managed to find to accomplish is by doing this [code block] This with 2 records works fine, but as soon as you need to create 1000 doesn't seems right to fire 1000 promises. Maybe I'm missing something and there is a good reason for a feature like this to not be available, or maybe is already pl