1. https://yuddomack.tistory.com/entry/React-Native-Firebase-%ED%91%B8%EC%8B%9C-%EC%95%8C%EB%A6%BCpush-notification-background-listener-1Android-%EC%84%B8%ED%8C%85

2.https://dev-yakuza.posstree.com/ko/react-native/react-native-firebase-v6-installation/

3. react-native-push-notification 라이브러리, firebase 연동 &
   받는 data structure 설명 디테일하게 나옴
   https://enappd.com/blog/firebase-push-notifications-in-react-native/81/

4. [카카오톡 push notification 원리 ] 백엔드 서버 아키텍처 — Presentation Layer 3. 응답 유형에 따른 Variation 2— push notification

https://tech.junhabaek.net/%EB%B0%B1%EC%97%94%EB%93%9C-%EC%84%9C%EB%B2%84-%EC%95%84%ED%82%A4%ED%85%8D%EC%B2%98-presentation-layer-3-%EC%9D%91%EB%8B%B5-%EC%9C%A0%ED%98%95%EC%97%90-%EB%94%B0%EB%A5%B8-variation-2-push-notification-1eacb4df4a7e

4번 경우 내가 간략하게 정리 포스팅 정리해야할듯. 전체 스크립 정리 해야.

5. React Native Firebase 푸시 알림(push notification), background listener - 2.firebase 리스너 구현

https://yuddomack.tistory.com/entry/React-Native-Firebase-%ED%91%B8%EC%8B%9C-%EC%95%8C%EB%A6%BCpush-notification-background-listener-2firebase-%EB%A6%AC%EC%8A%A4%EB%84%88-%EA%B5%AC%ED%98%84

6. 구글 : https://firebase.google.com/docs/cloud-messaging/android/receive?hl=ko#edit-the-app-manifest