ShadowDb

ShadowDb

Overview

ShadowDb is a wrapper for any StateDb operations. It runs all operations on two StateDbs simultaneously hence slowing down the command itself.

Using ShadowDb without existing StateDb

To run for example aida-vm with ShadowDb we need to specify we want to use it with flag --shadow-db then we specify implementation with db-shadow-impl (carmen, geth...) and variant with --db-shadow-variant (go-file, cpp-file...).
Using --keep-db will keep both prime and shadow StateDb in structure path/to/state/db/tmp/prime and path/to/state/db/tmp/shadow.

Using ShadowDb with existing StateDb

To run for example aida-rpc with ShadowDb we need to respect expected structure. First we specify using ShadowDb with --shadow-db.
Then we specify path to StateDb and ShadowDb with --db-src in which we have to have two StateDbs directories. One named prime other named shadow. Implementation and Variant are both read from statedb_info.json.