From dbc9a132e2bec661a8cf02762308b9bc6c7a5c97 Mon Sep 17 00:00:00 2001
From: Joseph Doherty <dohejw01@gmail.com>
Date: Sat, 15 Aug 2026 21:38:11 -0400
Subject: [PATCH] perf(adminui): /deployments lists a projection, not 50
 artifact blobs

---
 .../Components/Pages/Deployments.razor        | 20 ++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Deployments.razor b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Deployments.razor
index 628e7c09..b9859037 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Deployments.razor
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Deployments.razor
@@ -66,7 +66,18 @@
 </table>
 
 @code {
-    private IReadOnlyList<Deployment> _deployments = Array.Empty<Deployment>();
+    // Blob-free projection: the Deployment entity carries a varbinary(max) ArtifactBlob (a whole-fleet
+    // gzip config snapshot), which materialising the full entity would drag across the wire 50 times
+    // over just to render six scalar columns.
+    private sealed record DeploymentRow(
+        Guid DeploymentId,
+        string RevisionHash,
+        DeploymentStatus Status,
+        string CreatedBy,
+        DateTime CreatedAtUtc,
+        DateTime? SealedAtUtc);
+
+    private IReadOnlyList<DeploymentRow> _deployments = Array.Empty<DeploymentRow>();
     private bool _busy;
     private bool _lastSuccess;
     private string? _lastMessage;
@@ -83,6 +94,13 @@
         _deployments = await db.Deployments
             .AsNoTracking()
             .OrderByDescending(d => d.CreatedAtUtc)
+            .Select(d => new DeploymentRow(
+                d.DeploymentId,
+                d.RevisionHash,
+                d.Status,
+                d.CreatedBy,
+                d.CreatedAtUtc,
+                d.SealedAtUtc))
             .Take(50)
             .ToListAsync();