From 046abdf59b09324b515f653ac6dd107070008428 Mon Sep 17 00:00:00 2001
From: Pyronewbic <kan.nam.dev@gmail.com>
Date: Wed, 20 May 2026 09:23:06 +0530
Subject: [PATCH] infra: enable CPU throttling, drop API to 1 vCPU
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Cloud Run was running cpu-throttling: false (CPU always allocated) on
all 4 services across 2 regions — paying for idle vCPUs. Enable
cpu_idle + startup_cpu_boost on both API and site services. Drop API
from 2 vCPU to 1 vCPU (LLM grading is I/O-bound, not CPU-bound).
Expected ~60-70% Cloud Run cost reduction.
---
 terraform/cloud-run.tf | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/terraform/cloud-run.tf b/terraform/cloud-run.tf
index 51c3f04..6c75e53 100644
--- a/terraform/cloud-run.tf
+++ b/terraform/cloud-run.tf
@@ -35,9 +35,11 @@ resource "google_cloud_run_v2_service" "api" {
 
       resources {
         limits = {
-          cpu    = "2000m"
+          cpu    = "1000m"
           memory = "1Gi"
         }
+        cpu_idle          = true
+        startup_cpu_boost = true
       }
     }
   }
@@ -87,6 +89,8 @@ resource "google_cloud_run_v2_service" "site" {
           cpu    = "1000m"
           memory = "512Mi"
         }
+        cpu_idle          = true
+        startup_cpu_boost = true
       }
     }
   }