Historically, Vere has stored a single event log and snapshot. To facilitate replay across different binary versions more convenient and less error-prone, an improved design is the "epoch" system.
In the epoch system, Vere breaks up the event log into "epoch"s, where an epoch represents a snapshot and some events after that snapshot. An epoch lives in its own folder, named after the first event in that epoch.
In addition to storing a snapshot and a log of events, each epoch folder also stores a version file indicating which version of Vere originally ran these events -- this makes replay across different binary versions much easier, especially in the case of a jet mismatch in an old binary.
Code
This will be released in January of 2024.