diff --git a/.gitignore b/.gitignore
index abf3587..34c86d5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -53,4 +53,6 @@ docker-compose.yml
 !*.tfvars.example
 crash.log
 override.tf
-override.tf.json
\ No newline at end of file
+override.tf.json
+### k6 결과 덤프 ###
+loadtest/results/*.json
diff --git a/loadtest/capacity-contention.js b/loadtest/capacity-contention.js
index 679e57e..c457fca 100644
--- a/loadtest/capacity-contention.js
+++ b/loadtest/capacity-contention.js
@@ -10,6 +10,7 @@
 import http from 'k6/http';
 import { sleep } from 'k6';
 import { Counter } from 'k6/metrics';
+import { textSummary } from 'https://jslib.k6.io/k6-summary/0.0.4/index.js';
 
 const BASE_URL = __ENV.BASE_URL || 'http://localhost';
 const HOT_SUBJECTS = parseInt(__ENV.HOT_SUBJECTS || '1'); // 경쟁 대상 과목 수 (1 또는 2)
@@ -69,3 +70,29 @@ function formHeaders(userId) {
   return { headers: { userId: String(userId), 'Content-Type': 'application/x-www-form-urlencoded' } };
 }
 function safeJson(res) { try { return res.json(); } catch (e) { return null; } }
+
+// 터미널엔 전체 요약 + 정합성 지표 강조, 파일엔 JSON 저장(비교용)
+export function handleSummary(data) {
+  const ts = new Date().toISOString().replace(/[:T]/g, '-').slice(0, 19);
+  return {
+    stdout: textSummary(data, { indent: ' ', enableColors: true }) + highlight(data),
+    [`loadtest/results/capacity-contention-${ts}.json`]: JSON.stringify(data, null, 2),
+  };
+}
+function highlight(data) {
+  const m = data.metrics;
+  const cnt = (k) => (m[k] ? m[k].values.count : 0);
+  const hot = parseInt(__ENV.HOT_SUBJECTS || '1');
+  const p95 = m.http_req_duration ? m.http_req_duration.values['p(95)'] : 0;
+  const failed = m.http_req_failed ? (m.http_req_failed.values.rate * 100).toFixed(2) : '0.00';
+  return [
+    '\n========== 정합성 검증 (경합) ==========',
+    `신청 성공(정원 내) : ${cnt('enroll_success')}   (기대: 30 x ${hot} = ${30 * hot})`,
+    `정원 초과 거절     : ${cnt('capacity_full')}`,
+    `기타 거절          : ${cnt('other_reject')}`,
+    `응답시간 p95       : ${p95.toFixed(0)} ms`,
+    `HTTP 실패율        : ${failed} %`,
+    '>>> 각 과목 registeredNum <= 30 인지 서버에서 추가 확인',
+    '=======================================\n',
+  ].join('\n');
+}
diff --git a/loadtest/results/.gitkeep b/loadtest/results/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/loadtest/throughput-baseline.js b/loadtest/throughput-baseline.js
index a438a44..2fb367c 100644
--- a/loadtest/throughput-baseline.js
+++ b/loadtest/throughput-baseline.js
@@ -8,6 +8,7 @@
 import http from 'k6/http';
 import { sleep } from 'k6';
 import { Counter } from 'k6/metrics';
+import { textSummary } from 'https://jslib.k6.io/k6-summary/0.0.4/index.js';
 
 const BASE_URL = __ENV.BASE_URL || 'http://localhost';
 const SUBJECT_COUNT = parseInt(__ENV.SUBJECT_COUNT || '30'); // 시드된 과목 수
@@ -75,3 +76,31 @@ function formHeaders(userId) {
 }
 function randomInt(min, max) { return Math.floor(Math.random() * (max - min + 1)) + min; }
 function safeJson(res) { try { return res.json(); } catch (e) { return null; } }
+
+// 터미널엔 전체 요약 + 핵심 지표 강조, 파일엔 JSON 저장(비교용)
+export function handleSummary(data) {
+  const ts = new Date().toISOString().replace(/[:T]/g, '-').slice(0, 19);
+  return {
+    stdout: textSummary(data, { indent: ' ', enableColors: true }) + highlight(data),
+    [`loadtest/results/throughput-baseline-${ts}.json`]: JSON.stringify(data, null, 2),
+  };
+}
+function highlight(data) {
+  const m = data.metrics;
+  const cnt = (k) => (m[k] ? m[k].values.count : 0);
+  const succ = cnt('enroll_success');
+  const total = succ + cnt('enroll_rejected');
+  const rate = total > 0 ? ((succ / total) * 100).toFixed(1) : '0.0';
+  const p95 = m.http_req_duration ? m.http_req_duration.values['p(95)'] : 0;
+  const p99 = m.http_req_duration ? m.http_req_duration.values['p(99)'] : 0;
+  const rps = m.http_reqs ? m.http_reqs.values.rate : 0;
+  const failed = m.http_req_failed ? (m.http_req_failed.values.rate * 100).toFixed(2) : '0.00';
+  return [
+    '\n========== 핵심 지표 (처리량 baseline) ==========',
+    `신청 성공 / 시도   : ${succ} / ${total}  (성공률 ${rate}%)`,
+    `처리량(http_reqs)  : ${rps.toFixed(1)} req/s`,
+    `응답시간 p95 / p99 : ${p95.toFixed(0)} / ${p99.toFixed(0)} ms`,
+    `HTTP 실패율        : ${failed} %`,
+    '================================================\n',
+  ].join('\n');
+}
diff --git a/terraform/main.tf b/terraform/main.tf
index 926e928..a14eb3e 100644
--- a/terraform/main.tf
+++ b/terraform/main.tf
@@ -9,6 +9,7 @@ locals {
   # EC2에 전달할 .env 내용
   env_content = <<-EOT
     DOCKER_USERNAME=${var.docker_username}
+    SPRING_PROFILES_ACTIVE=${var.spring_profiles_active}
     MYSQL_ROOT_PASSWORD=${var.mysql_root_password}
     DB_NAME=${var.db_name}
     DB_USERNAME=${var.db_username}
diff --git a/terraform/terraform.tfvars.example b/terraform/terraform.tfvars.example
index 2ae0621..7ec3104 100644
--- a/terraform/terraform.tfvars.example
+++ b/terraform/terraform.tfvars.example
@@ -7,5 +7,8 @@ db_username         = "course"
 mysql_root_password = "change-me-root-password"
 db_password         = "change-me-app-password"
 
+# Spring 프로파일 (평소 prod / 부하테스트 시 prod,loadtest 로 변경하면 헤더 기반 userId 활성화)
+# spring_profiles_active = "prod,loadtest"
+
 # SSH 허용 IP를 직접 지정하려면 주석 해제 (비우면 apply 시 현재 공인 IP 자동 감지)
 # ssh_ingress_cidr  = "1.2.3.4/32"
diff --git a/terraform/variables.tf b/terraform/variables.tf
index a6ad36a..7f1e870 100644
--- a/terraform/variables.tf
+++ b/terraform/variables.tf
@@ -42,6 +42,12 @@ variable "docker_username" {
   type        = string
 }
 
+variable "spring_profiles_active" {
+  description = "Spring 프로파일 (평소 prod / 부하테스트 시 prod,loadtest)"
+  type        = string
+  default     = "prod"
+}
+
 variable "db_name" {
   description = "MySQL 데이터베이스명"
   type        = string