From 865cd86affe91b59f19b4da4d5bbb7ec3842d61b Mon Sep 17 00:00:00 2001
From: joungmin <joungmin@joungmins-Mac-mini.local>
Date: Mon, 15 Jun 2026 14:22:13 +0900
Subject: [PATCH] =?UTF-8?q?docs(changelog):=20v0.1.21=20=EB=8D=B0=EB=AA=AC?=
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---
 CHANGELOG.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b3d395..6144160 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,13 @@
 
 ## 2026-06-15
 
+### ⚙️ P4-2 데몬/캐시/통계 결함 (v0.1.21)
+- #275: updateConfig 가드(1+ 정수), Scheduler try-finally updateLastX, GET config admin-only
+- #276: ping try-with-resources + ConnectionFactory null 가드, makeKey null 가드
+- #274: SiteVisitStats int → long, recordVisit DataIntegrityViolationException 1회 재시도
+- 후속 분리: #335 (분산락), #336 (SCAN/자동복구), #337 (봇/레이트리밋)
+- Refs: #275 #276 #274 (close)
+
 ### 🧱 P4-1 백엔드 CRUD 결함 (v0.1.20)
 - #294: MemoService/ReviewService 동시성 DuplicateKeyException 가드, rating 0~5 검증, getAvgRating NVL
 - #295: 유니크 충돌 typed exception, channel_id "UC..." 형식 명시 분기, findByChannelId 컬럼 보완, body null 가드