From 253086eaad719ef99927c7fdb677b5c5c1ef4767 Mon Sep 17 00:00:00 2001
From: I Luk Kim <yirugi@gmail.com>
Date: Wed, 15 Apr 2026 01:02:28 -0700
Subject: [PATCH] =?UTF-8?q?fix:=20Python=20heap=20=EB=88=84=EC=A0=81=20OOM?=
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Python CPython 메모리 할당자는 freed 블록을 OS에 반환하지 않음.
수백 건의 백필 요청 처리 후 heap이 계속 성장 → 시스템 전체 OOM.

변경:
- --limit-max-requests 500: 500요청 후 uvicorn worker 자동 재시작
  → heap 초기화, 메모리 누수 방지
- mem_limit/memswap_limit 2g: 컨테이너 메모리 2GB 하드 캡
  → OS 전체가 아닌 컨테이너 안에서 OOM 제어
  → Docker restart: unless-stopped로 자동 복구

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 docker-compose.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/docker-compose.yml b/docker-compose.yml
index 626ca19..013d4b3 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -65,8 +65,10 @@ services:
       - ./API_DOCUMENTATION.md:/app/API_DOCUMENTATION.md  # API documentation
       - ./yfinance_plus:/app/yfinance_plus  # Mount yfinance_plus for development
       - ./data:/app/data  # For data files
+    mem_limit: 2g
+    memswap_limit: 2g
     restart: unless-stopped
-    command: ["python", "-m", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "18000", "--reload", "--limit-concurrency", "20"]
+    command: ["python", "-m", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "18000", "--reload", "--limit-concurrency", "20", "--limit-max-requests", "500"]
 
   # Frontend Application
   frontend: