* Configure ingest repo access/pool size
If I'm not mistaken 3 is a sane default, the only
inserts we're doing are:
- session buffer dump
- events buffer dump
- GA import dump
And all are serializable within their scopes?
* Add IngestRepo
* Start IngestRepo
* Use IngestRepo for inserts
* Annotate ClickhouseRepo as read_only
So no insert* functions are expanded
* Update moduledoc
* rename alias
* Fix default env var value so it can be casted
* Use IngestRepo for migrations
* Set default ingest pool size from 3 to 5
in case conns are restarting or else...
* Ensure all Repo prometheus metrics are collected
