Related work section?

It would be great if there were a related work section.

I've been developing a PostgreSQL version manager and I was thinking to add support for creating distributed [PostgreSQL] systems by letting the user pick between different options.

In addition to these:
- [Citus](https://github.com/citusdata)
- [pgEdge](https://github.com/pgedge)

The official website lists more:
- https://wiki.postgresql.org/wiki/Replication,_Clustering,_and_Connection_Pooling
- https://wiki.postgresql.org/wiki/Clustering

…and I'll have to do some research to figure out which is best for which use-case. But would it not make sense for you to include a comparison?

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PS: Oh and also your list of things needed for a production grade system is useful, and should be straightforward to add in a multicloud fashion into my command-line PostgreSQL provisioning tool:
- manage your backups;
- high availability through auto-failover;
- software updates;
- monitoring.

(though I may generalise aforementioned tool to be independent of PostgreSQL use-cases and thus be generic for deploying and managing any distributed system)