Failover Mode Design

[winder]

We need a way to keep a local ledger up-to-date and ready to serve as a failover node.

Two approaches would be:

1. Have a mode which keeps the data directory / local ledger current, but does not write.
2. Have indexers running in write mode coordinate so that only one of them updates the database.

Acceptance Criteria

• Design a way for users to have a way to keep an isolated failover node running which can be quickly started if needed.
• Followup issue(s) created for implementing the design.