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# Update collection aliases

POST http://localhost:6333/collections/aliases
Content-Type: application/json

Updates aliases for the specified collections.

Reference: https://api.qdrant.tech/api-reference/aliases/update-aliases

## Authentication

- `api-key` header (required) — API Key authentication via header

## Servers

- `http://localhost:6333` (http, default)
- `https://localhost:6333` (https)

## Request

### Query parameters

- `timeout` (integer, optional) — Wait for operation commit timeout in seconds. If timeout is reached - request will return with service error.

### Body (application/json)

This endpoint expects a ChangeAliasesOperation.

- `actions` (list of AliasOperations, required)

## Response

### 200

successful operation

- `usage` (CollectionsAliasesPostResponsesContentApplicationJsonSchemaUsage, optional)
- `time` (double, optional) — Time spent to process this request
- `status` (string, optional)
- `result` (boolean, optional)

## Types

### AliasOperations

Group of all the possible operations related to collection aliases

### CollectionsAliasesPostResponsesContentApplicationJsonSchemaUsage

### CreateAliasOperation

- `create_alias` (CreateAlias, required) — Create alternative name for a collection. Collection will be available under both names for search, retrieve,

### DeleteAliasOperation

Delete alias if exists

- `delete_alias` (DeleteAlias, required) — Delete alias if exists

### RenameAliasOperation

Change alias to a new one

- `rename_alias` (RenameAlias, required) — Change alias to a new one

### Usage

Usage of the hardware resources, spent to process the request

- `hardware` (UsageHardware, optional)
- `inference` (UsageInference, optional)

### CreateAlias

Create alternative name for a collection. Collection will be available under both names for search, retrieve,

- `collection_name` (string, required)
- `alias_name` (string, required)

### DeleteAlias

Delete alias if exists

- `alias_name` (string, required)

### RenameAlias

Change alias to a new one

- `old_alias_name` (string, required)
- `new_alias_name` (string, required)

### UsageHardware

### UsageInference

### HardwareUsage

Usage of the hardware resources, spent to process the request

- `cpu` (integer, required)
- `payload_io_read` (integer, required)
- `payload_io_write` (integer, required)
- `payload_index_io_read` (integer, required)
- `payload_index_io_write` (integer, required)
- `vector_io_read` (integer, required)
- `vector_io_write` (integer, required)

### InferenceUsage

- `models` (map from string to ModelUsage, required)

### ModelUsage

- `tokens` (uint64, required)

## Examples

**Request**

```json
{
  "actions": [
    {
      "create_alias": {
        "collection_name": "string",
        "alias_name": "string"
      }
    }
  ]
}
```

**Response**

```json
{
  "usage": {
    "hardware": {
      "cpu": 1,
      "payload_io_read": 1,
      "payload_io_write": 1,
      "payload_index_io_read": 1,
      "payload_index_io_write": 1,
      "vector_io_read": 1,
      "vector_io_write": 1
    },
    "inference": {
      "models": {}
    }
  },
  "time": 0.002,
  "status": "ok",
  "result": true
}
```

**SDK Code**

```python
from qdrant_client import QdrantClient

client = QdrantClient(url="http://localhost:6333")

client.update_collection_aliases(
    change_aliases_operations=[
        models.CreateAliasOperation(
            create_alias=models.CreateAlias(
                collection_name="example_collection", alias_name="production_collection"
            )
        )
    ]
)

client.update_collection_aliases(
    change_aliases_operations=[
        models.DeleteAliasOperation(
            delete_alias=models.DeleteAlias(alias_name="production_collection")
        ),
    ]
)

```

```java
import static io.qdrant.client.ShardKeyFactory.shardKey;

import io.qdrant.client.QdrantClient;
import io.qdrant.client.QdrantGrpcClient;

import io.qdrant.client.grpc.Collections.DeleteShardKey;
import io.qdrant.client.grpc.Collections.DeleteShardKeyRequest;

QdrantClient client = new QdrantClient(
                QdrantGrpcClient.newBuilder("localhost", 6334, false).build());

client.createAliasAsync("production_collection", "example_collection").get();

client.deleteAliasAsync("production_collection").get();

```

```go
package client

import (
	"context"

	"github.com/qdrant/go-client/qdrant"
)

func updateAlias() {
	client, err := qdrant.NewClient(&qdrant.Config{
		Host: "localhost",
		Port: 6334,
	})
	if err != nil {
		panic(err)
	}

	err = client.CreateAlias(context.Background(), "production_collection", "example_collection")
	if err != nil {
		panic(err)
	}

	err = client.DeleteAlias(context.Background(), "production_collection")
	if err != nil {
		panic(err)
	}

	err = client.RenameAlias(context.Background(), "production_collection", "legacy_collection")
	if err != nil {
		panic(err)
	}
}

```

```typescript
import { QdrantClient } from "@qdrant/js-client-rest";

const client = new QdrantClient({ host: "localhost", port: 6333 });

client.updateCollectionAliases({
  actions: [
    {
      create_alias: {
        collection_name: "example_collection",
        alias_name: "production_collection",
      },
    },
  ],
});

client.updateCollectionAliases({
  actions: [
    {
      delete_alias: {
        alias_name: "production_collection",
      },
    },
  ],
});

```

```rust
use qdrant_client::qdrant::{CreateAliasBuilder, DeleteAlias};
use qdrant_client::Qdrant;

let client = Qdrant::from_url("http://localhost:6334").build()?;

client
    .create_alias(CreateAliasBuilder::new(
        "example_collection",
        "production_collection",
    ))
    .await?;

client
    .delete_alias(DeleteAlias {
        alias_name: "production_collection".to_string(),
    })
    .await?;

```

```csharp
using Qdrant.Client;

var client = new QdrantClient("localhost", 6334);

await client.CreateAliasAsync(aliasName: "production_collection", collectionName: "example_collection");

await client.DeleteAliasAsync("production_collection");

```

```ruby
require 'uri'
require 'net/http'

url = URI("http://localhost:6333/collections/aliases")

http = Net::HTTP.new(url.host, url.port)

request = Net::HTTP::Post.new(url)
request["api-key"] = '<apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"actions\": [\n    {\n      \"create_alias\": {\n        \"collection_name\": \"string\",\n        \"alias_name\": \"string\"\n      }\n    }\n  ]\n}"

response = http.request(request)
puts response.read_body
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'http://localhost:6333/collections/aliases', [
  'body' => '{
  "actions": [
    {
      "create_alias": {
        "collection_name": "string",
        "alias_name": "string"
      }
    }
  ]
}',
  'headers' => [
    'Content-Type' => 'application/json',
    'api-key' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```swift
import Foundation

let headers = [
  "api-key": "<apiKey>",
  "Content-Type": "application/json"
]
let parameters = ["actions": [["create_alias": [
        "collection_name": "string",
        "alias_name": "string"
      ]]]] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "http://localhost:6333/collections/aliases")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```