Firebase Cloud Messaging(FCM)은 메시지를 안정적으로 전송할 수 있는 크로스 플랫폼 메시징 솔루션입니다.
FCM을 사용하면 새 이메일이나 기타 데이터를 동기화할 수 있음을 클라이언트 앱에 알릴 수 있습니다. 이렇게 알림 메시지를 전송하여 사용자를 유지하고 재참여를 유도할 수 있습니다. 채팅 메시지와 같은 사용 사례에서는 메시지로 최대 4,096바이트의 페이로드를 클라이언트 앱에 전송할 수 있습니다.
Firebase Cloud Messaging를 Android, Apple 또는 웹 앱에 추가합니다.
메시지 요청을 작성하고 전송하는 신뢰할 수 있는 환경을 설정합니다.
Admin SDK를 사용하여 전송 로직을 작성하고 Google에서 관리하는 Cloud Functions for Firebase 또는 다른 클라우드 환경에 해당 코드를 쉽게 배포할 수 있습니다.
또는 FCM 서버 프로토콜을 사용하여 서버 개발을 수행할 수 있습니다.
[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["필요한 정보가 없음","missingTheInformationINeed","thumb-down"],["너무 복잡함/단계 수가 너무 많음","tooComplicatedTooManySteps","thumb-down"],["오래됨","outOfDate","thumb-down"],["번역 문제","translationIssue","thumb-down"],["샘플/코드 문제","samplesCodeIssue","thumb-down"],["기타","otherDown","thumb-down"]],["최종 업데이트: 2025-08-18(UTC)"],[],[],null,["Firebase Cloud Messaging \nplat_ios plat_android plat_web plat_flutter plat_cpp plat_unity \nFirebase Cloud Messaging (FCM) is a cross-platform messaging solution that lets you reliably send\nmessages. \nUsing FCM, you can notify a client app that new email or other data is available to sync. You can send notification messages to drive user re-engagement and retention. For use cases such as instant messaging, a message can transfer a payload of up to 4096 bytes to a client app.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nReady to get started? Choose your platform:\n\n[iOS+](/docs/cloud-messaging/ios/client)\n[Android](/docs/cloud-messaging/android/client)\n[Web](/docs/cloud-messaging/js/client)\n[Flutter](/docs/cloud-messaging/flutter/client)\n\n[Unity](/docs/cloud-messaging/unity/client)\n[C++](/docs/cloud-messaging/cpp/client)\n\nKey capabilities\n\n|---------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| Send notification messages or data messages | Send notification messages that are displayed to your user. Or send data messages and determine completely what happens in your application code. See [Message types](/docs/cloud-messaging/concept-options#notifications_and_data_messages). |\n| Versatile message targeting | Distribute messages to your client app in any of 3 ways---to single devices, to groups of devices, or to devices subscribed to topics. |\n\nHow does it work?\n\n\u003cbr /\u003e\n\nAn FCM implementation includes two main components for\nsending and receiving:\n\n1. A trusted environment such as Cloud Functions for Firebase or an app server on which to build, target, and send messages.\n2. An Apple, Android, or web (JavaScript) client app that receives messages via the corresponding platform-specific transport service.\n\n\u003cbr /\u003e\n\nYou can send messages via\nthe [Firebase Admin SDK](/docs/cloud-messaging/server#firebase-admin-sdk-for-fcm) or the\n[FCM server protocol](/docs/cloud-messaging/server#choose).\nYou can use [the Notifications composer](//console.firebase.google.com/project/_/notification) for testing and to send marketing or engagement\nmessages using powerful built-in targeting and analytics or custom\n[imported segments](/docs/projects/import-segments).\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nSee the [architectural\noverview](/docs/cloud-messaging/fcm-architecture) for more detail and important\ninformation about the components of FCM.\n\n\u003cbr /\u003e\n\nImplementation path\n\n|---|-------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| | Set up the FCM SDK | Set up Firebase and FCM on your app according to the setup instructions for your platform. |\n| | Develop your client app | Add message handling, topic subscription logic, or other optional features to your client app. During the development, you can easily send test messages from [the Notifications composer](//console.firebase.google.com/project/_/notification). |\n| | Develop your app server | Decide whether you want to use the Firebase Admin SDK or the server protocol to create your sending logic---logic to authenticate, build send requests, handle responses, and so on. Then build out the logic in your trusted environment. |\n\nNext steps\n\n- Run the [Android](https://github.com/firebase/quickstart-android/tree/master/messaging)\n or [iOS](https://github.com/firebase/quickstart-ios/tree/master/messaging/)\n Quickstart sample. These samples let you run and review code to send a test\n message to a single device using the Firebase console.\n\n- Learn more about FCM from the\n [architecture overview](/docs/cloud-messaging/fcm-architecture),\n guides to key [FCM concepts](/docs/cloud-messaging/concept-options),\n and best practices guides for [sending messages at scale](/docs/cloud-messaging/scale-fcm)\n and [managing registration tokens](/docs/cloud-messaging/manage-tokens).\n\n- Try the tutorials for [Android](/docs/cloud-messaging/android/first-message)\n or [iOS](/docs/cloud-messaging/ios/first-message).\n\n- Add Firebase Cloud Messaging to your\n [Android](/docs/cloud-messaging/android/client),\n [Apple](/docs/cloud-messaging/ios/client),\n or [Web](/docs/cloud-messaging/js/client) app.\n\n- Set up your trusted environment where you'll build and send message requests.\n You can write sending logic using the\n [Admin SDK](/docs/cloud-messaging/server#firebase-admin-sdk-for-fcm), and\n readily deploy that code on Cloud Functions for Firebase or other cloud\n environments managed by Google.\n Alternatively, you can perform server development using the\n [FCM server protocol](/docs/cloud-messaging/server#choose)."]]
