diff --git a/idou.Core/Engine/IJobStateStore.cs b/idou.Core/Engine/IJobStateStore.cs
new file mode 100644
index 0000000..2769695
--- /dev/null
+++ b/idou.Core/Engine/IJobStateStore.cs
@@ -0,0 +1,13 @@
+using idou.Core.Domain.Enums;
+
+namespace idou.Core.Engine;
+
+public interface IJobStateStore
+{
+    JobStatus GetStatus(string jobId);
+    JobProgress GetProgress(string jobId);
+    void SetStatus(string jobId, JobStatus status);
+    void UpdateProgress(string jobId, JobProgress progress);
+    void AppendLog(string jobId, string message);
+    IReadOnlyList<string> ReadLogs(string jobId, int tail);
+}
\ No newline at end of file
diff --git a/idou.Core/Engine/JobProgress.cs b/idou.Core/Engine/JobProgress.cs
new file mode 100644
index 0000000..4cbf51e
--- /dev/null
+++ b/idou.Core/Engine/JobProgress.cs
@@ -0,0 +1,13 @@
+using idou.Core.Domain;
+
+namespace idou.Core.Engine;
+
+public class JobProgress
+{
+    public long ProcessedChanges { get; }
+    public long AppliedChanges { get; }
+    public long FailedChanges { get; }
+    public DateTimeOffset? LastSuccessfulApplyAt { get; }
+    public Checkpoint? LastCheckpoint { get; }
+    public string? LastErrorMessage { get; }
+}
\ No newline at end of file