A Snapshot wraps an optional value, and tags it with an event Id. We can say a 'snapshot' S of key K at event
S.at is value S.value. The value is somehow generated from the event stream (see API.acc)
The event Id is quite a useful thing in addition to the value of the snapshot.
A Snapshot wraps an optional value, and tags it with an event Id. We can say a 'snapshot' S of key K at event S.at is value S.value. The value is somehow generated from the event stream (see API.acc)
The event Id is quite a useful thing in addition to the value of the snapshot.
The type of the value wrapped by the Snapshot