diff --git a/Services/AppDbService.cs b/Services/AppDbService.cs
index b6c30c4..1f71396 100644
--- a/Services/AppDbService.cs
+++ b/Services/AppDbService.cs
@@ -31,15 +31,6 @@ public class AppDbService
             {
                 _log.Information("Database already exists");
             }
-
-            // Migration
-            var pendingMigrations = await _db.Database.GetPendingMigrationsAsync();
-            if (pendingMigrations.Any())
-            {
-                _log.Information("Applying pending migrations...");
-                await _db.Database.MigrateAsync();
-                _log.Information("Migrations applied successfully");
-            }
         }
         catch (Exception ex)
         {
@@ -48,6 +39,7 @@ public class AppDbService
         }
     }
 
+    #region Table: Configs
     public async Task<Dictionary<string, string>> LoadConfigAsync()
     {
         try
@@ -100,6 +92,105 @@ public class AppDbService
             throw;
         }
     }
+    #endregion Table: Configs
 
 
+    public async Task UpsertJiraIssueAsync(JiraIssue issue, CancellationToken ct = default)
+    {
+        try
+        {
+            var existing = await _db.JiraIssues.FindAsync([issue.Key], ct);
+
+            if (existing == null)
+            {
+                _db.JiraIssues.Add(issue);
+                _log.Debug("Inserting new Jira issue: {key}", issue.Key);
+            }
+            else
+            {
+                if (issue.Updated > existing.Updated)
+                {
+                    existing.Summary = issue.Summary;
+                    existing.Parent = issue.Parent;
+                    existing.Type = issue.Type;
+                    existing.Status = issue.Status;
+                    existing.Assignee = issue.Assignee;
+                    existing.Manager = issue.Manager;
+                    existing.Due = issue.Due;
+                    existing.Updated = issue.Updated;
+                    existing.ObjectId = issue.ObjectId;
+                    existing.NeedNotify = issue.NeedNotify;
+
+                    _db.JiraIssues.Update(existing);
+                    _log.Debug("Updating existing Jira issue: {key}", issue.Key);
+                }
+                else
+                {
+                    _log.Debug("Skipping Jira issue (not newer): {key}", issue.Key);
+                }
+            }
+
+            await _db.SaveChangesAsync(ct);
+        }
+        catch (Exception ex)
+        {
+            _log.Error(ex, "Failed to upsert Jira issue: {key}", issue.Key);
+            throw;
+        }
+    }
+
+    public async Task UpsertJiraIssuesBatchAsync(IEnumerable<JiraIssue> issues, CancellationToken ct = default)
+    {
+        try
+        {
+            var issueList = issues.ToList();
+            if (!issueList.Any())
+                return;
+
+            var keys = issueList.Select(i => i.Key).ToList();
+            var existingIssues = await _db.JiraIssues
+                .Where(ji => keys.Contains(ji.Key))
+                .ToDictionaryAsync(ji => ji.Key, ct);
+
+            int insertCount = 0, updateCount = 0, skipCount = 0;
+
+            foreach (var issue in issueList)
+            {
+                if (!existingIssues.TryGetValue(issue.Key, out var existing))
+                {
+                    _db.JiraIssues.Add(issue);
+                    insertCount++;
+                }
+                else if (issue.Updated > existing.Updated)
+                {
+                    existing.Summary = issue.Summary;
+                    existing.Parent = issue.Parent;
+                    existing.Type = issue.Type;
+                    existing.Status = issue.Status;
+                    existing.Assignee = issue.Assignee;
+                    existing.Manager = issue.Manager;
+                    existing.Due = issue.Due;
+                    existing.Updated = issue.Updated;
+                    existing.ObjectId = issue.ObjectId;
+                    existing.NeedNotify = issue.NeedNotify;
+
+                    _db.JiraIssues.Update(existing);
+                    updateCount++;
+                }
+                else
+                {
+                    skipCount++;
+                }
+            }
+
+            await _db.SaveChangesAsync(ct);
+            _log.Information("Batch completed: {insert} inserted, {update} updated, {skip} skipped out of {total} issues",
+                insertCount, updateCount, skipCount, issueList.Count);
+        }
+        catch (Exception ex)
+        {
+            _log.Error(ex, "Failed to batch upsert Jira issues");
+            throw;
+        }
+    }
 }