Order Replay Snapshot Checkpoint Management

This example models an event-sourced order replay service that stores compact checkpoints after rebuilding order state. A replay can resume from a usable checkpoint and only apply later events.

The fluent path builds the checkpoint manager directly:

var manager = OrderReplaySnapshotCheckpointPolicies.CreateFluentManager();

The generated path uses a source-generated factory:

var manager = GeneratedOrderReplayCheckpoints.CreateManager();

The example is importable through standard dependency injection:

services.AddOrderReplaySnapshotCheckpointDemo();

OrderReplayService composes an IEventStore<OrderReplayEvent, string> with SnapshotCheckpointManager<string, OrderReplaySnapshot>. Production applications can replace the in-memory event store with their own storage while keeping the checkpoint manager construction, stale checkpoint handling, and replay tests intact.