=== 로그인 루프 시작 ===
  8초 후: 112 건

=== 백엔드 프로세스에 SIGKILL → postmaster 가 재초기화한다 ===
  시각: 12:04:22.063
  최종 성공 로그인: 153 건

=== [검증] crash recovery 가 돌았는가 ===
  2026-09-04 02:59:48.427 UTC [1] LOG:  database system is ready to accept connections
  2026-09-04 03:02:35.807 UTC [1] LOG:  server process (PID 40) was terminated by signal 9: Killed
  2026-09-04 03:02:35.807 UTC [1] LOG:  terminating any other active server processes
  2026-09-04 03:02:35.814 UTC [1] LOG:  all server processes terminated; reinitializing
  2026-09-04 03:02:35.896 UTC [2585] LOG:  database system was not properly shut down; automatic recovery in progress
  2026-09-04 03:02:35.899 UTC [2585] LOG:  redo starts at 0/23CAB68
  2026-09-04 03:02:35.904 UTC [2585] LOG:  redo done at 0/2529E40 system usage: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s
  2026-09-04 03:02:35.923 UTC [2586] LOG:  checkpoint complete: wrote 113 buffers (0.7%); 0 WAL file(s) added, 0 removed, 0 recycled; write=0.004 s, sync=0.004 s, total=0.015 s; sync files=27, longest=0.003 s, average=0.001 s; distance=1405 kB, estimate=1405 kB; lsn=0/252A048, redo lsn=0/252A048
  2026-09-04 03:02:35.926 UTC [1] LOG:  database system is ready to accept connections