Hi there!
You can do some "batchy" operations using the
PATCH method. Note that this is not a recursive operation, so you would need to set the entire user object at each key you provide, but it would allow you to send a set of user ids all at once.
If you find that there is some portion of the data you are frequently editing, you may want to
flatten that into its own path. Then it should be fairly easy to use the update command to perform bulk operations.
As an alternative to bulk writes, you may also want to utilize a keep-alive header, which will reduce the overhead considerably by re-using the connection to the server. For smaller write operations (less than hundreds a second or less than MB of data) this can be plenty performant.
Cheers,
Kato