> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/upstash/redis-js/llms.txt
> Use this file to discover all available pages before exploring further.

# dbsize

> Get the number of keys in the database

## Description

Returns the number of keys in the currently selected database.

## Method Signature

```typescript theme={null}
dbsize(): Promise<number>
```

## Parameters

This command takes no parameters.

## Return Value

<ResponseField name="result" type="number">
  The number of keys in the database
</ResponseField>

## Examples

### Get database size

```typescript theme={null}
const size = await redis.dbsize();
console.log(`Database contains ${size} keys`);
```

### Monitor database growth

```typescript theme={null}
const before = await redis.dbsize();
console.log(`Keys before: ${before}`);

await redis.set("key1", "value1");
await redis.set("key2", "value2");
await redis.set("key3", "value3");

const after = await redis.dbsize();
console.log(`Keys after: ${after}`);
console.log(`Added ${after - before} keys`);
```

### Check if database is empty

```typescript theme={null}
const size = await redis.dbsize();
if (size === 0) {
  console.log("Database is empty");
} else {
  console.log(`Database has ${size} keys`);
}
```

### Track deletes

```typescript theme={null}
await redis.set("temp1", "value");
await redis.set("temp2", "value");
await redis.set("temp3", "value");

const before = await redis.dbsize();
await redis.del("temp1", "temp2", "temp3");
const after = await redis.dbsize();

console.log(`Deleted ${before - after} keys`);
```

## Performance

`DBSIZE` is an O(1) operation - it returns the count instantly without scanning the keyspace.

## See Also

* [keys](/api/commands/keys) - Find all keys matching a pattern
* [scan](/api/commands/scan) - Incrementally iterate over keys
* [flushdb](/api/commands/flushdb) - Delete all keys in the database