perf(siteruntime): deploy gate + InstanceActor PreStart share one Roslyn compile via the compile cache (plan R2-03 T6)

2026-07-13 09:54:49 -04:00
parent 1cc05f132f
commit 128d2bab73
3 changed files with 60 additions and 3 deletions
@@ -518,7 +518,11 @@ public class DeploymentManagerActor : ReceiveActor, IWithTimers
        // delete/disable commands, breaking that ordering. A deploy is an
        // infrequent admin command, so briefly holding the singleton for a pure
        // Roslyn compile is acceptable; the central deployer already Asks and
-        // waits for the DeploymentStatusResponse.
+        // waits for the DeploymentStatusResponse. Redeploys and multi-instance
+        // deploys of unchanged scripts hit the process-wide compile cache
+        // (SiteScriptCompileCache), so the synchronous gate recompiles only
+        // genuinely new code and the Instance Actor's PreStart reuses the gate's
+        // compile (N4).
        var errors = _deployCompileValidator.Validate(command.FlattenedConfigurationJson);
        if (errors.Count > 0)
        {