### RxDB Workflow Example

Source: https://rxdb.info/articles/alternatives/nedb-alternative.html

Illustrates the equivalent workflow in RxDB, including database creation, collection setup, insertion, and querying.

```javascript
import { createRxDatabase } from 'rxdb/plugins/core';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

const db = await createRxDatabase({
    name: 'tasks',
    storage: getRxStorageLocalstorage()
});

await db.addCollections({
    tasks: {
        schema: {
            title: 'task schema',
            version: 0,
            primaryKey: 'id',
            type: 'object',
            properties: {
                id: { type: 'string', maxLength: 100 },
                title: { type: 'string' },
                done: { type: 'boolean' }
            },
            required: ['id', 'title', 'done']
        }
    }
});

await db.tasks.insert({ id: 't1', title: 'Write report', done: false });

const openTasks = await db.tasks
    .find({ selector: { done: false }, sort: [{ title: 'asc' }] })
    .exec();
```

--------------------------------

### RxDB Quick Example with Local Storage

Source: https://rxdb.info/articles/reactjs-storage.html

Sets up an RxDB database using local storage, adds a collection, and inserts/queries documents. This is a basic setup for offline-first applications.

```javascript
import { createRxDatabase } from 'rxdb';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

(async function setUpRxDB() {
  const db = await createRxDatabase({
    name: 'heroDB',
    storage: getRxStorageLocalstorage(),
    multiInstance: false
  });

  const heroSchema = {
    title: 'hero schema',
    version: 0,
    type: 'object',
    primaryKey: 'id',
    properties: {
      id: { type: 'string', maxLength: 100 },
      name: { type: 'string' },
      power: { type: 'string' }
    },
    required: ['id', 'name']
  };

  await db.addCollections({ heroes: { schema: heroSchema } });

  // Insert a doc
  await db.heroes.insert({ id: '1', name: 'AlphaHero', power: 'Lightning' });

  // Query docs once
  const allHeroes = await db.heroes.find().exec();
  console.log('Heroes: ', allHeroes);
})();
```

--------------------------------

### Install RxDB Backup Plugin

Source: https://rxdb.info/backup.html?code=JD1&console=errors

Import and add the RxDB Backup Plugin to your RxDB instance. This is a required setup step before using backup functionalities.

```javascript
import { addRxPlugin } from 'rxdb';
import { RxDBBackupPlugin } from 'rxdb/plugins/backup';
addRxPlugin(RxDBBackupPlugin);
```

--------------------------------

### Install RxDB and SQLite Adapter

Source: https://rxdb.info/react-native-database.html

Install RxDB and the `react-native-quick-sqlite` adapter for bare React Native projects. This setup is required before configuring the database.

```bash
npm install rxdb rxjs react-native-quick-sqlite
```

--------------------------------

### CouchDB Replication Setup

Source: https://rxdb.info/articles/alternatives/alternatives/pouchdb-alternative.html

Configure RxDB to replicate with a CouchDB-compatible endpoint. This example sets up live replication and specifies batch sizes for pull and push operations.

```javascript
import { replicateCouchDB } from 'rxdb/plugins/replication-couchdb';

const replicationState = replicateCouchDB({
    replicationIdentifier: 'my-couchdb-replication',
    collection: db.items,
    url: 'https://example.com/db/items',
    live: true,
    pull: { batchSize: 60 },
    push: { batchSize: 60 }
});

await replicationState.awaitInitialReplication();

replicationState.error$.subscribe(err => {
    console.error('Replication error:', err);
});
```

--------------------------------

### Create RxDatabase with LocalStorage

Source: https://rxdb.info/electron-database.html

Installs dependencies, creates an RxDatabase using the LocalStorage RxStorage, adds collections, inserts a document, and performs a query. Use this for initial setup and testing in renderer processes.

```javascript
import { createRxDatabase } from 'rxdb';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

// create database
const db = await createRxDatabase({
    name: 'exampledb',
    storage: getRxStorageLocalstorage()
});

// create collections
const collections = await myRxDatabase.addCollections({
    humans: {
        /* ... */
    }
});

// insert document
await collections.humans.insert({id: 'foo', name: 'bar'});

// run a query
const result = await collections.humans.find({
    selector: {
        name: 'bar'
    }
}).exec();

// observe a query
await collections.humans.find({
    selector: {
        name: 'bar'
    }
}).$.subscribe(result => {/* ... */});
```

--------------------------------

### RxDB CRDT Plugin Installation and Setup

Source: https://rxdb.info/crdt.html?code=CRDT2&console=errors

Demonstrates how to install and configure the RxDB CRDT plugin. This includes adding the plugin, defining the schema with CRDT fields, and inserting a document.

```javascript
// import the relevant parts from the CRDT plugin
import {
    getCRDTSchemaPart,
    RxDBcrdtPlugin
} from 'rxdb/plugins/crdt';
 
// add the CRDT plugin to RxDB
import { addRxPlugin } from 'rxdb';
addRxPlugin(RxDBcrdtPlugin);
 
// create a database
import { createRxDatabase } from 'rxdb';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';
const myDatabase = await createRxDatabase({
  name: 'heroesdb',
  storage: getRxStorageLocalstorage()
});
 
// create a schema with the CRDT options
const mySchema = {
    version: 0,
    primaryKey: 'id',
    type: 'object',
    properties: {
        id: {
            type: 'string',
            maxLength: 100
        },
        points: {
            type: 'number',
            maximum: 100,
            minimum: 0
        },
        crdts: getCRDTSchemaPart() // use this field to store the CRDT operations
    },
    required: ['id', 'points'],
    crdt: {
        field: 'crdts'
    }
}
 
// add a collection
await db.addCollections({
    users: {
        schema: mySchema
    }
});
 
// insert a document
const myDocument = await db.users.insert({id: 'alice', points: 0});
 
// run a CRDT operation that increments the 'points' by one
await myDocument.updateCRDT({
    ifMatch: {
        $inc: {
            points: 1
        }
    }
});
```

--------------------------------

### RxDB Collection and Reactive Query Setup

Source: https://rxdb.info/articles/alternatives/signaldb-alternative.html

Sets up a new RxDB database with a 'tasks' collection and demonstrates a reactive query that emits changes. Ensure RxDB and the Dexie plugin are installed.

```javascript
import { createRxDatabase, addRxPlugin } from 'rxdb';
import { getRxStorageDexie } from 'rxdb/plugins/storage-dexie';

const db = await createRxDatabase({
    name: 'tasksdb',
    storage: getRxStorageDexie()
});

await db.addCollections({
    tasks: {
        schema: {
            version: 0,
            primaryKey: 'id',
            type: 'object',
            properties: {
                id: { type: 'string', maxLength: 40 },
                title: { type: 'string' },
                done: { type: 'boolean' },
                updatedAt: { type: 'number' }
            },
            required: ['id', 'title', 'done', 'updatedAt']
        }
    }
});

// Reactive query: emits whenever the result set changes,
// across tabs and after replication updates.
const openTasks$ = db.tasks
    .find({ selector: { done: false } })
    .sort({ updatedAt: 'desc' })
    .$ ;

openTasks$.subscribe(tasks => {
    console.log('Open tasks:', tasks.length);
});

await db.tasks.insert({
    id: 't1',
    title: 'Write SignalDB comparison',
    done: false,
    updatedAt: Date.now()
});
```

--------------------------------

### Install Dependencies

Source: https://rxdb.info/contribution.html

After cloning the repository, navigate to the project directory and install the necessary dependencies using npm.

```bash
cd rxdb && npm install
```

--------------------------------

### Install expo-file-system

Source: https://rxdb.info/rx-storage-filesystem-expo.html

Install the expo-file-system dependency using npx.

```bash
npx expo install expo-file-system
```

--------------------------------

### Initialize RxDB Database in React

Source: https://rxdb.info/articles/react-database.html

Basic setup for creating an RxDB database instance within a React application. Ensure RxDB and RxJS are installed as dependencies.

```javascript
import { createRxDatabase } from 'rxdb';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

const db = await createRxDatabase({
  name: 'heroesdb',
  storage: getRxStorageLocalstorage(),
  password: 'myPassword',
  multiInstance: true,
  eventReduce: true,
  cleanupPolicy: {}
});
```

--------------------------------

### Start FoundationDB Docker Container

Source: https://rxdb.info/rx-storage-foundationdb.html

Run this npm script to start the FoundationDB Docker container and configure the database.

```bash
npm run foundationdb:start
```

--------------------------------

### Install Appwrite SDK and RxDB

Source: https://rxdb.info/replication-appwrite.html

Install the necessary packages for Appwrite SDK and RxDB using npm.

```bash
npm install appwrite rxdb
```

--------------------------------

### Example Setup of Replication

Source: https://rxdb.info/articles/zero-latency-local-first.html

Configure RxDB replication to synchronize data between a local collection and a server. This includes defining handlers for pulling data from the server and pushing local changes, with options for live replication and retry intervals.

```typescript
import { replicateRxCollection } from 'rxdb/plugins/replication';

async function syncLocalTasks(db) {
  replicateRxCollection({
    collection: db.tasks,
    replicationIdentifier: 'sync-tasks',
    // Define how to pull server documents and push local documents
    pull: {
      handler: async (lastCheckpoint, batchSize) => {
        // logic to retrieve updated tasks from the server since lastCheckpoint
      },
    },
    push: {
      handler: async (docs) => {
        // logic to post local changes to the server
      },
    },
    live: true,        // continuously replicate
    retryTime: 5000,   // retry on errors or disconnections
  });
}
```

--------------------------------

### Install RxDB, RxJS, and Supabase Client

Source: https://rxdb.info/articles/alternatives/alternatives/supabase-alternative.html

Install the necessary npm packages for RxDB, RxJS, and the Supabase JavaScript client.

```bash
npm install rxdb rxjs @supabase/supabase-js
```

--------------------------------

### Serve Documentation Locally

Source: https://rxdb.info/contribution.html

Install documentation dependencies and serve the documentation locally to preview changes. Access it at http://localhost:4000/.

```bash
npm run docs:install && npm run docs:serve
```

--------------------------------

### Initialize LocalStorage Storage

Source: https://rxdb.info/quickstart.html

Get the RxStorage instance for LocalStorage, suitable for simple browser setups and small datasets.

```javascript
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

let storage = getRxStorageLocalstorage();
```

--------------------------------

### Basic Remote RxStorage Setup

Source: https://rxdb.info/rx-storage-remote.html

Demonstrates how to set up the Remote RxStorage on both the client and the remote instance. The client uses `getRxStorageRemote` to connect, while the remote instance uses `exposeRxStorageRemote` to expose its storage.

```javascript
// on the client
import { getRxStorageRemote } from 'rxdb/plugins/storage-remote';
const storage = getRxStorageRemote({
    identifier: 'my-id',
    mode: 'storage',
    messageChannelCreator: () => Promise.resolve({
        messages$: new Subject(),
        send(msg) {
            // send to remote storage
        }
    })
});
const myDb = await createRxDatabase({
    storage
});
 
// on the remote
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';
import { exposeRxStorageRemote } from 'rxdb/plugins/storage-remote';
exposeRxStorageRemote({
    storage: getRxStorageLocalstorage(),
    messages$: new Subject(),
    send(msg){
        // send to other side
    }
});
```

--------------------------------

### Creating an RxDB Database and Collection

Source: https://rxdb.info/articles/alternatives/alternatives/supabase-alternative.html

This example demonstrates how to set up a local-first RxDB database with a 'posts' collection, including schema definition and offline query execution. This works immediately offline.

```javascript
import { createRxDatabase } from 'rxdb/plugins/core';
import { getRxStorageIndexedDB } from 'rxdb/plugins/storage-indexeddb';

const db = await createRxDatabase({
    name: 'myapp',
    storage: getRxStorageIndexedDB()
});

await db.addCollections({
    posts: {
        schema: {
            title: 'post schema',
            version: 0,
            primaryKey: 'id',
            type: 'object',
            properties: {
                id:        { type: 'string', maxLength: 100 },
                title:     { type: 'string' },
                body:      { type: 'string' },
                authorId:  { type: 'string', maxLength: 100 },
                published: { type: 'boolean' },
                updatedAt: { type: 'number' }
            },
            required: ['id', 'title', 'body', 'authorId', 'published', 'updatedAt'],
            indexes: ['updatedAt', 'authorId']
        }
    }
});

// This works offline. No network required.
const posts = await db.posts.find({
    selector: { published: true },
    sort: [{ updatedAt: 'desc' }]
}).exec();
```

--------------------------------

### Create RxDatabase with OPFS Storage

Source: https://rxdb.info/articles/alternatives/alternatives/rethinkdb-alternative.html

This example shows how to initialize an RxDB database using the Origin Private File System (OPFS) storage plugin for potentially better performance in browser environments.

```javascript
import { getRxStorageOpfs } from 'rxdb/plugins/storage-opfs';

const db = await createRxDatabase({
    name: 'myapp',
    storage: getRxStorageOpfs() // use OPFS for better browser performance
});
```

--------------------------------

### Basic Horizon Application Example

Source: https://rxdb.info/articles/alternatives/alternatives/horizon-alternative.html

Demonstrates connecting to a Horizon backend, accessing collections, storing documents, and subscribing to real-time changes using RxJS Observables.

```javascript
// Horizon: connect to the backend
const horizon = Horizon();

// Get a reference to a collection (table in RethinkDB)
const messages = horizon('messages');

// Store a document
messages.store({ id: 'msg-1', text: 'Hello, Horizon!', createdAt: new Date() });

// Watch for realtime changes - returns an RxJS Observable
messages.watch().subscribe(allMessages => {
    renderMessages(allMessages);
});

// Fetch once (not live)
messages.fetch().subscribe(allMessages => {
    console.log(allMessages);
});

// Order and limit
messages.order('createdAt', 'descending').limit(20).watch().subscribe(recent => {
    renderRecentMessages(recent);
});
```

--------------------------------

### Basic CouchDB Replication Setup

Source: https://rxdb.info/articles/alternatives/alternatives/couchdb-alternative.html

Sets up live replication with a CouchDB instance, including batch sizes for pull and push operations. Use this for standard replication needs.

```javascript
import { replicateCouchDB } from 'rxdb/plugins/replication-couchdb';

const replicationState = replicateCouchDB({
    replicationIdentifier: 'my-couchdb-replication',
    collection: db.todos,
    url: 'http://example.com/db/todos',
    live: true,
    pull: {
        batchSize: 60
    },
    push: {
        batchSize: 60
    }
});

// Wait for the first sync to complete
await replicationState.awaitInitialReplication();

// Monitor errors
replicationState.error$.subscribe(err => {
    console.error('Replication error:', err);
});
```

--------------------------------

### Create RxDatabase with Capacitor SQLite

Source: https://rxdb.info/rx-storage-sqlite.html

Use `getSQLiteBasicsCapacitor` to get the capacitor sqlite wrapper for RxDB. This example demonstrates creating a RxDatabase instance with the SQLite storage plugin for Capacitor.

```typescript
import {
    createRxDatabase
} from 'rxdb';
import {
    getRxStorageSQLite,
    getSQLiteBasicsCapacitor
} from 'rxdb-premium/plugins/storage-sqlite';

/**
 * Import SQLite from the capacitor plugin.
 */
import {
    CapacitorSQLite,
    SQLiteConnection
} from '@capacitor-community/sqlite';
import { Capacitor } from '@capacitor/core';

const sqlite = new SQLiteConnection(CapacitorSQLite);

const myRxDatabase = await createRxDatabase({
    name: 'exampledb',
    storage: getRxStorageSQLite({
        /**
         * Different runtimes have different interfaces to SQLite.
         * For example in node.js we have a callback API,
         * while in capacitor sqlite we have Promises.
         * So we need a helper object that is capable of doing the basic
         * sqlite operations.
         */
        sqliteBasics: getSQLiteBasicsCapacitor(sqlite, Capacitor)
    })
});
```

--------------------------------

### Create RxDatabase with LocalStorage

Source: https://rxdb.info/rx-database.html?code=UT8&console=errors

Demonstrates the basic creation of an RxDatabase using the LocalStorage RxStorage, suitable for browser environments. Includes optional parameters for password, multi-instance support, event reduction, and cleanup policy.

```javascript
import { createRxDatabase } from 'rxdb/plugins/core';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

const db = await createRxDatabase({
  name: 'heroesdb',                   // <- name
  storage: getRxStorageLocalstorage(),       // <- RxStorage

  /* Optional parameters: */
  password: 'myPassword',             // <- password (optional)
  multiInstance: true,                // <- multiInstance (optional, default: true)
  eventReduce: true,                  // <- eventReduce (optional, default: false)
  cleanupPolicy: {}                   // <- custom cleanup policy (optional)
});

```

--------------------------------

### Set Custom Push Initial Checkpoint

Source: https://rxdb.info/replication.html?code=RC_OUTDATED&console=errors

Configures the push replication to start pushing only documents that are newer than a specified checkpoint. This is achieved by setting the `push.initialCheckpoint` option during replication setup.

```javascript
// store the latest checkpoint of a collection
let lastLocalCheckpoint: any;
myCollection.checkpoint$.subscribe(checkpoint => lastLocalCheckpoint = checkpoint)

// start the replication but only push documents
// that are newer than the lastLocalCheckpoint
const replicationState = replicateRxCollection({
    collection: myCollection,
    replicationIdentifier: 'my-custom-replication-with-init-checkpoint',
    /* ... */
    push: {
        handler: /* ... */,
        initialCheckpoint: lastLocalCheckpoint
    }
});
```

--------------------------------

### Encryption at Rest Setup

Source: https://rxdb.info/articles/alternatives/alternatives/horizon-alternative.html

RxDB's encryption plugin encrypts document fields before writing to local storage, decrypting them on read. This example uses Crypto-JS for encryption with IndexedDB.

```javascript
import {
    wrappedKeyEncryptionCryptoJsStorage
} from 'rxdb/plugins/encryption-crypto-js';
import { getRxStorageIndexedDB } from 'rxdb/plugins/storage-indexeddb';

const db = await createRxDatabase({
    name: 'myapp',
    storage: wrappedKeyEncryptionCryptoJsStorage({
        storage: getRxStorageIndexedDB()
    }),
    password: 'your-encryption-passphrase'
});

const schema = {
    version: 0,
    primaryKey: 'id',
    type: 'object',
    properties: {
        id:       { type: 'string', maxLength: 100 },
        text:     { type: 'string' },
        sensitiveData: { type: 'string' }
    },
    encrypted: ['sensitiveData'] // stored as ciphertext in IndexedDB
};
```

--------------------------------

### RxDB CRDT Plugin Setup and Usage

Source: https://rxdb.info/crdt.html?code=CRDT3&console=errors

Demonstrates how to install and configure the RxDB CRDT plugin. This includes adding the plugin, defining a schema with CRDT support, and performing a CRDT operation.

```javascript
// import the relevant parts from the CRDT plugin
import {
    getCRDTSchemaPart,
    RxDBcrdtPlugin
} from 'rxdb/plugins/crdt';
 
// add the CRDT plugin to RxDB
import { addRxPlugin } from 'rxdb';
addRxPlugin(RxDBcrdtPlugin);
 
// create a database
import { createRxDatabase } from 'rxdb';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';
const myDatabase = await createRxDatabase({
  name: 'heroesdb',
  storage: getRxStorageLocalstorage()
});
 
// create a schema with the CRDT options
const mySchema = {
    version: 0,
    primaryKey: 'id',
    type: 'object',
    properties: {
        id: {
            type: 'string',
            maxLength: 100
        },
        points: {
            type: 'number',
            maximum: 100,
            minimum: 0
        },
        crdts: getCRDTSchemaPart() // use this field to store the CRDT operations
    },
    required: ['id', 'points'],
    crdt: { // CRDT options
        field: 'crdts'
    }
}
 
// add a collection
await db.addCollections({
    users: {
        schema: mySchema
    }
});
 
// insert a document
const myDocument = await db.users.insert({id: 'alice', points: 0});
 
// run a CRDT operation that increments the 'points' by one
await myDocument.updateCRDT({
    ifMatch: {
        $inc: {
            points: 1
        }
    }
});
```

--------------------------------

### RxDB TypeScript Example

Source: https://rxdb.info/tutorials/typescript.html

This snippet shows the complete setup and usage of RxDB with TypeScript, including database and collection creation, schema definition, ORM methods, hooks, data manipulation, and cleanup.

```typescript
/**
 * create database and collections
 */
const myDatabase: MyDatabase = await createRxDatabase<MyDatabaseCollections>({
    name: 'mydb',
    storage: getRxStorageLocalstorage()
});

const heroSchema: RxJsonSchema<HeroDocType> = {
    title: 'human schema',
    description: 'describes a human being',
    version: 0,
    keyCompression: true,
    primaryKey: 'passportId',
    type: 'object',
    properties: {
        passportId: {
            type: 'string',
            maxLength: 100
        },
        firstName: {
            type: 'string'
        },
        lastName: {
            type: 'string'
        },
        age: {
            type: 'integer'
        }
    },
    required: ['passportId', 'firstName', 'lastName']
};

const heroDocMethods: HeroDocMethods = {
    scream: function(this: HeroDocument, what: string) {
        return this.firstName + ' screams: ' + what.toUpperCase();
    }
};

const heroCollectionMethods: HeroCollectionMethods = {
    countAllDocuments: async function(this: HeroCollection) {
        const allDocs = await this.find().exec();
        return allDocs.length;
    }
};

await myDatabase.addCollections({
    heroes: {
        schema: heroSchema,
        methods: heroDocMethods,
        statics: heroCollectionMethods
    }
});

// add a postInsert-hook
myDatabase.heroes.postInsert(
    function myPostInsertHook(
        this: HeroCollection, // own collection is bound to the scope
        docData: HeroDocType, // documents data
        doc: HeroDocument // RxDocument
    ) {
        console.log('insert to ' + this.name + '-collection: ' + doc.firstName);
    },
    false // not async
);

/**
 * use the database
 */

// insert a document
const hero: HeroDocument = await myDatabase.heroes.insert({
    passportId: 'myId',
    firstName: 'piotr',
    lastName: 'potter',
    age: 5
});

// access a property
console.log(hero.firstName);

// use a orm method
hero.scream('AAH!');

// use a static orm method from the collection
const amount: number = await myDatabase.heroes.countAllDocuments();
console.log(amount);


/**
 * clean up
 */
myDatabase.close();
```

--------------------------------

### Configure a Live Database Backup

Source: https://rxdb.info/backup.html

Set up an ongoing backup that captures all changes made to the database in real-time. This is achieved by setting `live: true` in the backup options. The initial backup can still be awaited, but subsequent changes will be continuously written.

```javascript
const backupOptions = {
    // set live: true to have an ongoing backup
    live: true,
    directory: '/my-backup-folder/',
    attachments: true
}
const backupState = myDatabase.backup(backupOptions);

// you can still await the initial backup write,
// but further changes will still be processed.
await backupState.awaitInitialBackup();
```

--------------------------------

### Subscribe to a Single Document Field Change

Source: https://rxdb.info/articles/alternatives/alternatives/meteor-alternative.html

This example demonstrates how to subscribe to changes of a specific field ('text') within a single RxDB document. It first retrieves the document and then uses the `get$` method to observe field updates.

```javascript
// Subscribe to a single document and watch one field
const doc = await db.messages.findOne('msg-001').exec();
doc.get$('text').subscribe(newText => {
    console.log('Text changed to:', newText);
});
```

--------------------------------

### RxDB Leader Election with LocalStorage Storage

Source: https://rxdb.info/leader-election.html

This example demonstrates how to set up a RxDB database with local storage and initiate data pulling only when the current tab becomes the leader. The pulling starts after the database instance successfully waits for leadership.

```typescript
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

const db = await createRxDatabase({
  name: 'weatherDB',
  storage: getRxStorageLocalstorage(),
  password: 'myPassword',
  multiInstance: true
});

await db.addCollections({
  temperature: {
    schema: mySchema
  }
});

db.waitForLeadership()
  .then(() => {
    console.log('Long lives the king!'); // <- runs when db becomes leader
    setInterval(async () => {
      const temp = await fetch('https://example.com/api/temp/');
      db.temperature.insert({
          degrees: temp,
          time: new Date().getTime()
      });
    }, 1000 * 10);
  });
```

--------------------------------

### Create RxDB Database with DenoKV Storage

Source: https://rxdb.info/rx-storage-denokv.html

Demonstrates how to initialize an RxDB database using the DenoKV RxStorage plugin. Configure consistency level, KV path, and batch size for optimal performance.

```typescript
import { createRxDatabase } from 'rxdb';
import { getRxStorageDenoKV } from 'rxdb/plugins/storage-denokv';

const myRxDatabase = await createRxDatabase({
    name: 'exampledb',
    storage: getRxStorageDenoKV({
      /**
       * Consistency level, either 'strong' or 'eventual'
       * (Optional) default='strong'
       */
      consistencyLevel: 'strong',
      /**
       * Path which is used in the first argument of Deno.openKv(settings.openKvPath)
       * (Optional) default=''
       */
      openKvPath: './foobar',
      /**
       * Some operations have to run in batches,
       * you can test different batch sizes to improve performance.
       * (Optional) default=100
       */
      batchSize: 100
    })
});

```

--------------------------------

### RxDB Backend-Agnostic Replication Setup

Source: https://rxdb.info/articles/alternatives/alternatives/minimongo-alternative.html

Implement custom replication logic using RxDB's pull/push interface. This example shows how to set up live replication with a custom HTTP endpoint, including error handling and automatic retries.

```typescript
import { replicateRxCollection } from 'rxdb/plugins/replication';

const replicationState = await replicateRxCollection({
    collection: db.posts,
    replicationIdentifier: 'posts-replication-v1',
    pull: {
        handler: async (checkpoint, batchSize) => {
            const response = await fetch(
                `/api/posts/pull?since=${checkpoint?.updatedAt ?? 0}` +
                `&limit=${batchSize}`
            );
            return response.json(); // { documents: [...], checkpoint: {...} }
        }
    },
    push: {
        handler: async (rows) => {
            const response = await fetch('/api/posts/push', {
                method: 'POST',
                body: JSON.stringify(rows),
                headers: { 'Content-Type': 'application/json' }
            });
            return response.json(); // return conflicting documents if any
        }
    },
    live: true,
    retryTime: 5000
});

replicationState.error$.subscribe(err => {
    console.error('Replication error:', err);
});
```

--------------------------------

### Start P2P Replication with WebRTC

Source: https://rxdb.info/replication-webrtc.html?code=RC7&console=errors

Initiates P2P replication for a specific RxDB collection using WebRTC. Requires a topic for peer discovery and a connection handler, typically `getConnectionHandlerSimplePeer` for basic setups. Ensure correct signaling server URLs and necessary Node.js polyfills if applicable.

```javascript
const replicationPool = await replicateWebRTC(
    {
        // Start the replication for a single collection
        collection: db.todos,

        // The topic is like a 'room-name'. All clients with the same topic
        // will replicate with each other. In most cases you want to use
        // a different topic string per user. Also you should prefix the topic with
        // a unique identifier for your app, to ensure
        // you do not let your users connect
        // with other apps that also use the RxDB P2P Replication.
        topic: 'my-users-pool',
        /**
         * You need a collection handler to be able to create WebRTC connections.
         * Here we use the simple peer handler which
         * uses the 'simple-peer' npm library.
         * To learn how to create a custom connection handler, read the source code, 
         * it is pretty simple.
         */
        connectionHandlerCreator: getConnectionHandlerSimplePeer({
            // Set the signaling server url.
            // You can use the server provided by RxDB for tryouts,
            // but in production you should use your own server instead.
            signalingServerUrl: 'wss://signaling.rxdb.info/',

            // only in Node.js, we need the wrtc library
            // because Node.js does not have WebRTC.
            // Wrap with createSimplePeerWrtc().
            wrtc: createSimplePeerWrtc(
                require('node-datachannel/polyfill')
            ),

            // only in Node.js, we need the WebSocket library
            // because Node.js does not contain the WebSocket API.
            webSocketConstructor: require('ws').WebSocket
        }),
        pull: {},
        push: {}
    }
);
```

--------------------------------

### Configure a Live Database Backup

Source: https://rxdb.info/backup.html?code=JD1&console=errors

Set up an ongoing backup that captures all changes made to the database after the initial write. The backup process continues to monitor and write new data.

```javascript
const backupOptions = {
    // set live: true to have an ongoing backup
    live: true,
    directory: '/my-backup-folder/',
    attachments: true
}
const backupState = myDatabase.backup(backupOptions);
 
// you can still await the initial backup write,
// but further changes will still be processed.
await backupState.awaitInitialBackup();
```

--------------------------------

### pause() and start()

Source: https://rxdb.info/replication.html?code=RC_FORBIDDEN&console=errors

Pauses a currently running replication. The replication can be resumed later using the `start()` method. The `start()` method is used to resume a paused replication.

```APIDOC
## pause() and start()

### Description
Pauses a running replication. The replication can later be resumed with `RxReplicationState.start()`.

### Methods
`await myRxReplicationState.pause();`
`await myRxReplicationState.start(); // restart`
```

--------------------------------

### Run FoundationDB Server with Docker

Source: https://rxdb.info/rx-storage-foundationdb.html

Set up a FoundationDB server instance using Docker for local development and CI. This includes pulling the image, starting the container, and copying the cluster file.

```bash
# Pull the Docker image
docker pull foundationdb/foundationdb:7.3.59

# Start the container with host networking
docker run -d \
    --name rxdb-foundationdb \
    --network host \
    -e FDB_NETWORKING_MODE=host \
    foundationdb/foundationdb:7.3.59

# Copy the cluster file from the container
sudo mkdir -p /etc/foundationdb
docker cp rxdb-foundationdb:/var/fdb/fdb.cluster /etc/foundationdb/fdb.cluster

```

--------------------------------

### Initialize RxDB with Localstorage Storage

Source: https://rxdb.info/articles/vue-database.html

Set up an RxDB database instance using the Localstorage storage plugin. This example defines a 'heroesdb' database with a 'hero' collection, including schema definition for id, name, and healthpoints.

```javascript
// db.js
import { createRxDatabase } from 'rxdb';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

export async function initDatabase() {
  const db = await createRxDatabase({
    name: 'heroesdb',
    storage: getRxStorageLocalstorage(),
    password: 'myPassword',    // optional encryption password
    multiInstance: true,       // multi-tab support
    eventReduce: true          // optimize event handling
  });

  await db.addCollections({
    hero: {
      schema: {
        title: 'hero schema',
        version: 0,
        primaryKey: 'id',
        type: 'object',
        properties: {
          id: { type: 'string', maxLength: 100 },
          name: { type: 'string' },
          healthpoints: { type: 'number' }
        }
      }
    }
  });

  return db;
}
```

--------------------------------

### Install react-native-sqlite-2

Source: https://rxdb.info/adapters.html

Install the necessary packages for the react-native-sqlite adapter.

```bash
npm install pouchdb-adapter-react-native-sqlite react-native-sqlite-2
```

--------------------------------

### Create RxDatabase with LocalStorage

Source: https://rxdb.info/rx-database.html?code=DB9&console=errors

Demonstrates the creation of an RxDatabase instance using the LocalStorage RxStorage, suitable for browser environments. Includes essential parameters like name and storage implementation.

```javascript
import { createRxDatabase } from 'rxdb/plugins/core';
import { getRxStorageLocalstorage } from 'rxdb/plugins/storage-localstorage';

const db = await createRxDatabase({
  name: 'heroesdb',                   // <- name
  storage: getRxStorageLocalstorage(),       // <- RxStorage

  /* Optional parameters: */
  password: 'myPassword',             // <- password (optional)
  multiInstance: true,                // <- multiInstance (optional, default: true)
  eventReduce: true,                  // <- eventReduce (optional, default: false)
  cleanupPolicy: {}
});
```