пул: keepalive, проверка живости, min=2 max=5, reconnect, v1.22

site/app.py

@@ -152,6 +152,7 @@ class ContractsApp:
         mime = mimeutil.guess_mime(filename) or "application/octet-stream"
         cid = data.get("cid")
 
+        conn = None
         if cid:
             contract_id = cid
         else:
@@ -165,10 +166,11 @@ class ContractsApp:
             )
             contract_id = cur.fetchone()[0]
             conn.commit()
+
+        doc_id = _save_file_to_db(filename, file_bytes, mime, str(contract_id), conn=conn)
+        if conn:
             cur.close()
             db.put_conn(conn)
-
-        doc_id = _save_file_to_db(filename, file_bytes, mime, str(contract_id))
         return jsonify({"contract_id": str(contract_id), "doc_id": str(doc_id) if doc_id else None})
 
     # ── Чанковая загрузка ──────────────────────────────────────