fix(realestate): listings-ingest async(BackgroundTask)+매칭/알림 타이밍 로그 + notify 홍수방지(cap+baseline)

realestate-lab/app/internal_router.py

@@ -1,8 +1,9 @@
 """naver-fetch 워커 내부 계약: targets 조회 + listings ingest."""
 import os
+import time
 import logging
 from typing import List, Dict, Any
-from fastapi import APIRouter, Depends
+from fastapi import APIRouter, Depends, BackgroundTasks
 from pydantic import BaseModel
 
 from .auth import verify_internal_key
@@ -45,7 +46,7 @@ class ListingsIngest(BaseModel):
 
 @router.post("/api/internal/realestate/listings-ingest",
              dependencies=[Depends(verify_internal_key)])
-def listings_ingest(body: ListingsIngest):
+def listings_ingest(body: ListingsIngest, background_tasks: BackgroundTasks):
     received = new = 0
     for batch in body.batches:
         for raw in batch.articles:
@@ -60,10 +61,18 @@ def listings_ingest(body: ListingsIngest):
                     new += 1
             except Exception as e:
                 logger.warning("네이버 ingest 파싱 실패: %s", e)
-    matched = 0
     if received:
-        with match_notify_lock:
-            run_listing_matching()
-            noti = notify_new_listings()
-            matched = int(noti.get("sent", 0)) if isinstance(noti, dict) else 0
-    return {"received": received, "new": new, "matched": matched}
+        background_tasks.add_task(_match_and_notify)
+    return {"received": received, "new": new, "queued": bool(received)}
+
+
+def _match_and_notify():
+    """ingest 후처리(백그라운드): 매칭+알림을 공유 락으로 직렬화. 타이밍 로그로 병목 관측."""
+    with match_notify_lock:
+        t0 = time.time()
+        run_listing_matching()
+        t1 = time.time()
+        noti = notify_new_listings()
+        t2 = time.time()
+    sent = (noti or {}).get("sent") if isinstance(noti, dict) else noti
+    logger.info("ingest 후처리: match=%.1fs notify=%.1fs sent=%s", t1 - t0, t2 - t1, sent)