파일 확장자 및 용량 검증

  • https://passionha.tistory.com/214
  • https://zgundam.tistory.com/72
  • https://maxcomfem.tistory.com/54
  • https://bonoken.tistory.com/162
  • https://dailyheumsi.tistory.com/163
  • https://velog.io/@park2348190/MultipartProperties%EC%9D%98-max-file-size-max-request-size%EC%9D%98-%EC%B0%A8%EC%9D%B4

스레드 로컬 vs 레디스

  • https://javacan.tistory.com/entry/ThreadLocalUsage

몽고db

  • https://www.44bits.io/ko/keyword/datadog

  • https://jennifersoft.com/ko/blog/tech/2018-02-19/#:~:text=%EC%98%AC%ED%95%B4%20%EC%B4%88%20%EB%91%90%EB%B2%88%EC%A7%B8%20%EC%84%9C%EB%B9%84%EC%8A%A4%EA%B0%80,TPS%20%EA%B9%8C%EC%A7%80%20%EB%B0%9C%EC%83%9D%ED%95%98%EA%B3%A0%20%EC%9E%88%EB%8B%A4.