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Firebase Realtime Database adalah database yang dihosting di cloud. Data disimpan sebagai JSON dan disinkronkan secara realtime dengan setiap klien yang terhubung. Ketika Anda mem-build aplikasi lintas platform dengan SDK Android, platform Apple, dan JavaScript kami, semua klien Anda menggunakan satu instance Realtime Database yang sama dan secara otomatis menerima perubahan data terbaru.
Buka bagian Realtime Database di
Firebase console.
Anda akan diminta untuk memilih project Firebase yang ada.
Ikuti alur kerja pembuatan database.
Pilih mode awal untuk Firebase Security Rules Anda:
Mode pengujian
Cocok untuk memulai dengan library klien seluler dan web,
tetapi memungkinkan siapa pun untuk membaca dan menimpa data Anda. Setelah melakukan pengujian, pastikan untuk meninjau bagian Memahami Aturan Firebase Realtime Database.
Untuk mulai menggunakan Web, Apple, atau Android SDK, pilih mode pengujian.
Mode terkunci
Menolak semua pembacaan dan penulisan dari klien seluler dan web.
Server aplikasi terautentikasi masih dapat mengakses database Anda.
Pilih lokasi untuk database.
Bergantung pada lokasi database, URL untuk database baru akan memiliki salah satu format berikut:
DATABASE_NAME.firebaseio.com (untuk database di us-central1)
DATABASE_NAME.REGION.firebasedatabase.app (untuk database di semua lokasi lain)
Klik Selesai.
Saat Anda mengaktifkan Realtime Database, API di
Pengelola Cloud API juga akan aktif.
Konfigurasi Realtime Database Security Rules
Realtime Database menyediakan bahasa aturan deklaratif sehingga Anda dapat menentukan cara data disusun, diindeks, serta kapan dapat membaca dan menulis data tersebut.
Tambahkan Realtime Database JS SDK dan lakukan inisialisasi Realtime Database:
Anda harus menentukan URL Realtime Database saat melakukan inisialisasi JavaScript SDK.
Anda dapat menemukan URL Realtime Database di bagian Realtime Database pada
Firebase console. Bergantung pada lokasi database, URL database akan memiliki salah satu format berikut:
https://DATABASE_NAME.firebaseio.com (untuk database di us-central1)
https://DATABASE_NAME.REGION.firebasedatabase.app (untuk database di semua lokasi lain)
Inisialisasi SDK menggunakan cuplikan kode berikut:
Pantau dasbor Usage and billing di Firebase console untuk mendapatkan gambaran keseluruhan penggunaan project Anda di berbagai layanan Firebase.
Anda juga dapat membuka dasbor UsageRealtime Database untuk mengetahui informasi penggunaan yang lebih mendetail.
[null,null,["Terakhir diperbarui pada 2025-08-14 UTC."],[],[],null,["\u003cbr /\u003e\n\nThe Firebase Realtime Database is a cloud-hosted database. Data is stored as\nJSON and synchronized in realtime to every connected client. When you build\ncross-platform apps with our Android, Apple platforms, and JavaScript SDKs, all of your\nclients share one Realtime Database instance and automatically receive\nupdates with the newest data.\n\nPrerequisites\n\nIf you haven't already, [install the Firebase JS SDK and initialize Firebase](/docs/web/setup#add-sdk-and-initialize).\n\nCreate a Database\n\n1. Navigate to the **Realtime Database** section of the\n [Firebase console](https://console.firebase.google.com/project/_/database).\n You'll be prompted to select an existing Firebase project.\n Follow the database creation workflow.\n\n2. Select a starting mode for your Firebase Security Rules:\n\n Test mode\n\n : Good for getting started with the mobile and web client libraries,\n but allows anyone to read and overwrite your data. After testing, **make\n sure to review the [Understand Firebase Realtime Database Rules](/docs/database/security)\n section.**\n\n :\n | **Note:** If you create a database in Test mode and make no changes to the default world-readable and world-writeable Rules within a trial period, you will be alerted by email, then your database rules will deny all requests. Note the expiration date during the Firebase console setup flow.\n\n : To get started with the web, Apple, or Android SDK, select testmode.\n\n Locked mode\n\n : Denies all reads and writes from mobile and web clients.\n Your authenticated application servers can still access your database.\n\n3. Choose a location for the database.\n\n Depending on the\n [location of the database](/docs/projects/locations#rtdb-locations), the\n URL for the new database will be in one of the following forms:\n - \u003cvar translate=\"no\"\u003eDATABASE_NAME\u003c/var\u003e`.firebaseio.com` (for\n databases in `us-central1`)\n\n - \u003cvar translate=\"no\"\u003eDATABASE_NAME\u003c/var\u003e`.`\u003cvar translate=\"no\"\u003eREGION\u003c/var\u003e`.firebasedatabase.app`\n (for databases in all other locations)\n\n4. Click **Done**.\n\nWhen you enable Realtime Database, it also enables the API in the\n[Cloud API Manager](https://console.cloud.google.com/projectselector/apis/api/firebasedatabase.googleapis.com/overview).\n\nConfigure Realtime Database Security Rules\n\nThe Realtime Database provides a declarative rules language that allows you to\ndefine how your data should be structured, how it should be indexed, and when\nyour data can be read from and written to.\n| **Note:** By default, read and write access to your database is restricted so only authenticated users can read or write data. To get started without setting up [Authentication](/docs/auth), you can [configure your rules for public access](/docs/rules/basics#default_rules_locked_mode). This does make your database open to anyone, even people not using your app, so be sure to restrict your database again when you set up authentication.\n\nAdd the Realtime Database JS SDK and initialize Realtime Database\n\nYou must specify your Realtime Database URL when initializing the JavaScript SDK.\n\nYou can find your Realtime Database URL in the *Realtime Database* section of the\n[Firebase console](//console.firebase.google.com/). Depending on the\n[location of the database](/docs/projects/locations#rtdb-locations),\nthe database URL will be in one of the following forms:\n\n- `https://`\u003cvar translate=\"no\"\u003eDATABASE_NAME\u003c/var\u003e`.firebaseio.com` (for databases in `us-central1`)\n- `https://`\u003cvar translate=\"no\"\u003eDATABASE_NAME\u003c/var\u003e`.`\u003cvar translate=\"no\"\u003eREGION\u003c/var\u003e`.firebasedatabase.app` (for databases in all other locations)\n\nInitialize the SDK using the following code snippet: \n\nWeb\n\n\n| [Learn more](/docs/web/learn-more#modular-version) about the tree-shakeable modular web API and [upgrade](/docs/web/modular-upgrade) from the namespaced API.\n\n\u003cbr /\u003e\n\n```python\nimport { initializeApp } from \"firebase/app\";\nimport { getDatabase } from \"firebase/database\";\n\n// TODO: Replace the following with your app's Firebase project configuration\n// See: https://firebase.google.com/docs/web/learn-more#config-object\nconst firebaseConfig = {\n // ...\n // The value of `databaseURL` depends on the location of the database\n databaseURL: \"https://\u003cvar translate=\"no\"\u003eDATABASE_NAME\u003c/var\u003e.firebaseio.com\",\n};\n\n// Initialize Firebase\nconst app = initializeApp(firebaseConfig);\n\n\n// Initialize Realtime Database and get a reference to the service\nconst database = getDatabase(app);\n```\n\nWeb\n\n\n| [Learn more](/docs/web/learn-more#modular-version) about the tree-shakeable modular web API and [upgrade](/docs/web/modular-upgrade) from the namespaced API.\n\n\u003cbr /\u003e\n\n```python\nimport firebase from \"firebase/app\";\nimport \"firebase/compat/database\";\n\n// TODO: Replace the following with your app's Firebase project configuration\n// See: https://firebase.google.com/docs/web/learn-more#config-object\nconst firebaseConfig = {\n // ...\n // The value of `databaseURL` depends on the location of the database\n databaseURL: \"https://\u003cvar translate=\"no\"\u003eDATABASE_NAME\u003c/var\u003e.firebaseio.com\",\n};\n\n// Initialize Firebase\nfirebase.initializeApp(firebaseConfig);\n\n\n// Initialize Realtime Database and get a reference to the service\nconst database = firebase.database();\n```\n\nYou're ready to start using the Firebase Realtime Database!\n\nNext Steps\n\n- Learn how to [structure data](/docs/database/web/structure-data) for Realtime Database.\n\n- [Scale your data across multiple database\n instances](/docs/database/usage/sharding).\n\n- [Read and write data.](/docs/database/web/read-and-write)\n\n- [View your database in the\n Firebase console.](//console.firebase.google.com/project/_/database/data)\n\n- Prepare to launch your app:\n\n - Enable [App Check](/docs/app-check/web) to help ensure that only your\n apps can access your databases.\n\n - Set up [budget\n alerts](/docs/projects/billing/avoid-surprise-bills#set-up-budget-alert-emails)\n for your project in the Google Cloud console.\n\n - Monitor the [*Usage and billing*\n dashboard](//console.firebase.google.com/project/_/usage)\n in the Firebase console to get an overall picture of your project's\n usage across multiple Firebase services.\n You can also visit the [Realtime Database *Usage*\n dashboard](//console.firebase.google.com/project/_/database/usage) for more\n detailed usage information.\n\n - Review the [Firebase launch checklist](/support/guides/launch-checklist)."]]