"Patching": accessing and recording into a proxy collection at the same time?

Help! PYWB
1

Hello all, is it possible to set up pywb into “patching” mode? I mean that if on access a URL is not found in a collection, that resource will be added to exactly that collection?

When setting up fallback collections in config.yaml such as:

proxy:
  coll: record_to
  recording: true

recorder:
  source_coll: get_from

collections:
  get_from:
    sequence:
      -
        index: ./collections/get_from/indexes/
        archive_paths: ./collections/get_from/archive/
        resource: ./collections/get_from/archive/
        name: local
      -
        index_group:
          ia:   memento+http://web.archive.org/web/

pywb will raise Exception: Can not record into fixed collection.

When setting up just a recording collection, resources will be added multiple times each time they’re accessed without consulting the already existing indexes:

proxy:
    coll: remote
    recording: true

recorder:
    source_coll: outside
    rollover_idle_secs: 300
    rollover_size: 1000000

collections:
    outside:
        sequence:
            - index: memento+http://web.archive.org/web/