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使用服务连接器集成 Azure Cache for Redis

项目
01/22/2025

可以使用服务连接器将 Azure Cache for Redis 连接到其他云服务。本文概述了支持的身份验证方法和客户端，并提供示例代码。它还显示你在创建服务连接时获得的默认环境变量名称和值（或 Spring Boot 配置）。

受支持的计算服务

可以使用服务连接器将以下计算服务连接到 Azure Cache for Redis：

Azure 应用程序服务
Azure Container Apps
Azure Functions
Azure Kubernetes 服务 (AKS)
Azure Spring Apps

受支持的身份验证和客户端类型

下表显示了使用服务连接器将计算服务连接到 Azure Cache for Redis 时所支持的身份验证方法与客户端的组合。 “是”表示组合受到支持。 “否”表示不受支持。

客户端类型	系统分配的托管标识	用户分配的托管标识	机密/连接字符串	服务主体
.NET	是	是	是	是
Go	否	否	是	否
Java	是	是	是	是
Java - Spring Boot	否	否	是	否
Node.js	是	是	是	是
Python	是	是	是	是
无	是	是	是	是

除 Go 和 Java - Spring Boot 之外，所有客户端类型都可以使用表中引用的任何身份验证方法来使用服务连接器连接到 Azure Redis 缓存。 Go 和 Java - Spring Boot 唯一支持的身份验证方法是机密/连接字符串或服务主体。

默认环境变量名称或应用程序属性和示例代码

使用下面的环境变量名称和应用程序属性将计算服务连接到 Redis 服务器。若要详细了解命名约定，请参阅服务连接器内部一文。

系统分配的托管标识

默认环境变量名称	说明	示例值
`AZURE_REDIS_HOST`	Redis 终结点	`<RedisName>.redis.cache.windows.net`

代码示例

下面的步骤和代码显示如何使用系统分配的托管标识连接到 Redis。

安装依赖项。

dotnet add package Microsoft.Azure.StackExchangeRedis --version 3.2.0

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Microsoft.Azure.StackExchangeRedis 扩展。

using StackExchange.Redis;
var cacheHostName = Environment.GetEnvironmentVariable("AZURE_REDIS_HOST");
var configurationOptions = ConfigurationOptions.Parse($"{cacheHostName}:6380");

// Uncomment the following lines corresponding to the authentication type you want to use.
// For system-assigned identity.
// await configurationOptions.ConfigureForAzureWithTokenCredentialAsync(new DefaultAzureCredential());

// For user-assigned identity.
// var managedIdentityClientId = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTID");
// await configurationOptions.ConfigureForAzureWithUserAssignedManagedIdentityAsync(managedIdentityClientId);

// Service principal secret.
// var clientId = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTID");
// var tenantId = Environment.GetEnvironmentVariable("AZURE_REDIS_TENANTID");
// var secret = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTSECRET");
// await configurationOptions.ConfigureForAzureWithServicePrincipalAsync(clientId, tenantId, secret);


var connectionMultiplexer = await ConnectionMultiplexer.ConnectAsync(configurationOptions);

在 pom.xml 文件中添加以下依赖项：

<dependency>
    <groupId>com.azure</groupId>
    <artifactId>azure-identity</artifactId>
    <version>1.11.2</version> <!-- {x-version-update;com.azure:azure-identity;dependency} -->
</dependency>

<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>5.1.0</version>  <!-- {x-version-update;redis.clients:jedis;external_dependency} -->
</dependency>

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Azure-AAD-Authentication-With-Jedis。

import redis.clients.jedis.DefaultJedisClientConfig;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisShardInfo;
import java.net.URI;

// Uncomment the following lines corresponding to the authentication type you want to use.
// For system-assigned identity.
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().build();

// For user-assigned identity.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().managedIdentityClientId(clientId).build();

// For AKS workload identity.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().workloadIdentityClientId(clientId).build();

// For service principal.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// String secret = System.getenv("AZURE_REDIS_CLIENTSECRET");
// String tenant = System.getenv("AZURE_REDIS_TENANTID");
// ClientSecretCredential defaultAzureCredential = new ClientSecretCredentialBuilder().tenantId(tenant).clientId(clientId).clientSecret(secret).build();

String token = defaultAzureCredential
.getToken(new TokenRequestContext()
    .addScopes("https://redis.azure.com/.default")).block().getToken();

// SSL connection is required.
boolean useSsl = true;
// TODO: Replace Host Name with Azure Cache for Redis Host Name.
String username = extractUsernameFromToken(token);
String cacheHostname = System.getenv("AZURE_REDIS_HOST");

// Create Jedis client and connect to Azure Cache for Redis over the TLS/SSL port using the access token as password.
// Note, Redis Cache host name and port are required below.
Jedis jedis = new Jedis(cacheHostname, 6380, DefaultJedisClientConfig.builder()
    .password(token) // Microsoft Entra access token as password is required.
    .user(username) // Username is Required
    .ssl(useSsl) // SSL Connection is Required
    .build());

// Set a value against your key in the Redis cache.
jedis.set("Az:key", "testValue");
System.out.println(jedis.get("Az:key"));

// Close the Jedis Client
jedis.close();

安装依赖项。
```
pip install redis azure-identity
```

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 azure-aad-auth-with-redis-py。

import os
import time
import logging
import redis
import base64
import json
from azure.identity import DefaultAzureCredential

host = os.getenv('AZURE_REDIS_HOST')
scope = "https://redis.azure.com/.default"
port = 6380  # Required

def extract_username_from_token(token):
    parts = token.split('.')
    base64_str = parts[1]

    if len(base64_str) % 4 == 2:
        base64_str += "=="
    elif len(base64_str) % 4 == 3:
        base64_str += "="

    json_bytes = base64.b64decode(base64_str)
    json_str = json_bytes.decode('utf-8')
    jwt = json.loads(json_str)

    return jwt['oid']

def re_authentication():
    _LOGGER = logging.getLogger(__name__)
    # Uncomment the following lines corresponding to the authentication type you want to use.
    # For system-assigned identity.
    # cred = DefaultAzureCredential()

    # For user-assigned identity.
    # client_id = os.getenv('AZURE_REDIS_CLIENTID')
    # cred = DefaultAzureCredential(managed_identity_client_id=client_id)

    # For user-assigned identity.
    # client_id = os.getenv('AZURE_REDIS_CLIENTID')
    # cred = DefaultAzureCredential(managed_identity_client_id=client_id)

    # For service principal.
    # tenant_id = os.getenv("AZURE_TENANT_ID")
    # client_id = os.getenv("AZURE_CLIENT_ID")
    # client_secret = os.getenv("AZURE_CLIENT_SECRET")
    # cred = ServicePrincipalCredentials(tenant=tenant_id, client_id=client_id, secret=client_secret)

    token = cred.get_token(scope)
    user_name = extract_username_from_token(token.token)
    r = redis.Redis(host=host,
                    port=port,
                    ssl=True,   # ssl connection is required.
                    username=user_name,
                    password=token.token,
                    decode_responses=True)
    max_retry = 3
    for index in range(max_retry):
        try:
            if _need_refreshing(token):
                _LOGGER.info("Refreshing token...")
                tmp_token = cred.get_token(scope)
                if tmp_token:
                    token = tmp_token
                r.execute_command("AUTH", user_name, token.token)
            r.set("Az:key1", "value1")
            t = r.get("Az:key1")
            print(t)
            break
        except redis.ConnectionError:
            _LOGGER.info("Connection lost. Reconnecting.")
            token = cred.get_token(scope)
            r = redis.Redis(host=host,
                            port=port,
                            ssl=True,   # ssl connection is required.
                            username=user_name,
                            password=token.token,
                            decode_responses=True)
        except Exception:
            _LOGGER.info("Unknown failures.")
            break


def _need_refreshing(token, refresh_offset=300):
    return not token or token.expires_on - time.time() < refresh_offset

if __name__ == '__main__':
    re_authentication()

安装依赖项。
```
npm install redis @azure/identity
```

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Azure Cache for Redis：使用 node-redis 客户端库的 Microsoft Entra ID。

import { createClient } from "redis";
import { DefaultAzureCredential } from "@azure/identity";

function extractUsernameFromToken(accessToken: AccessToken): string{
    const base64Metadata = accessToken.token.split(".")[1];
    const { oid } = JSON.parse(
        Buffer.from(base64Metadata, "base64").toString("utf8"),
    );
    return oid;
}

async function main() {
    // Uncomment the following lines corresponding to the authentication type you want to use.  
    // For system-assigned identity.
    // const credential = new DefaultAzureCredential();

    // For user-assigned identity.
    // const clientId = process.env.AZURE_REDIS_CLIENTID;
    // const credential = new DefaultAzureCredential({
    //     managedIdentityClientId: clientId
    // });

    // For service principal.
    // const tenantId = process.env.AZURE_REDIS_TENANTID;
    // const clientId = process.env.AZURE_REDIS_CLIENTID;
    // const clientSecret = process.env.AZURE_REDIS_CLIENTSECRET;
    // const credential = new ClientSecretCredential(tenantId, clientId, clientSecret);

    // Fetch a Microsoft Entra token to be used for authentication. This token will be used as the password.
    const redisScope = "https://redis.azure.com/.default";
    let accessToken = await credential.getToken(redisScope);
    console.log("access Token", accessToken);
    const host = process.env.AZURE_REDIS_HOST;

    // Create redis client and connect to Azure Cache for Redis over the TLS port using the access token as password.
    const client = createClient({
        username: extractUsernameFromToken(accessToken),
        password: accessToken.token,
        url: `redis://${host}:6380`,
        pingInterval: 100000,
        socket: { 
        tls: true,
        keepAlive: 0 
        },
    });

    client.on("error", (err) => console.log("Redis Client Error", err));
    await client.connect();
    // Set a value against your key in Azure Redis Cache.
    await client.set("Az:key", "value1312");
    // Get value of your key in Azure Redis Cache.
    console.log("value-", await client.get("Az:key"));
}

main().catch((err) => {
    console.log("error code: ", err.code);
    console.log("error message: ", err.message);
    console.log("error stack: ", err.stack);
});

用户分配的托管标识

默认环境变量名称	说明	示例值
`AZURE_REDIS_HOST`	Redis 终结点	`<RedisName>.redis.cache.windows.net`
`AZURE_REDIS_CLIENTID`	托管标识客户端 ID	`<client-ID>`

代码示例

下面的步骤和代码显示如何使用用户分配的托管标识连接到 Redis。

安装依赖项。

dotnet add package Microsoft.Azure.StackExchangeRedis --version 3.2.0

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Microsoft.Azure.StackExchangeRedis 扩展。

using StackExchange.Redis;
var cacheHostName = Environment.GetEnvironmentVariable("AZURE_REDIS_HOST");
var configurationOptions = ConfigurationOptions.Parse($"{cacheHostName}:6380");

// Uncomment the following lines corresponding to the authentication type you want to use.
// For system-assigned identity.
// await configurationOptions.ConfigureForAzureWithTokenCredentialAsync(new DefaultAzureCredential());

// For user-assigned identity.
// var managedIdentityClientId = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTID");
// await configurationOptions.ConfigureForAzureWithUserAssignedManagedIdentityAsync(managedIdentityClientId);

// Service principal secret.
// var clientId = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTID");
// var tenantId = Environment.GetEnvironmentVariable("AZURE_REDIS_TENANTID");
// var secret = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTSECRET");
// await configurationOptions.ConfigureForAzureWithServicePrincipalAsync(clientId, tenantId, secret);


var connectionMultiplexer = await ConnectionMultiplexer.ConnectAsync(configurationOptions);

在 pom.xml 文件中添加以下依赖项：

<dependency>
    <groupId>com.azure</groupId>
    <artifactId>azure-identity</artifactId>
    <version>1.11.2</version> <!-- {x-version-update;com.azure:azure-identity;dependency} -->
</dependency>

<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>5.1.0</version>  <!-- {x-version-update;redis.clients:jedis;external_dependency} -->
</dependency>

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Azure-AAD-Authentication-With-Jedis。

import redis.clients.jedis.DefaultJedisClientConfig;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisShardInfo;
import java.net.URI;

// Uncomment the following lines corresponding to the authentication type you want to use.
// For system-assigned identity.
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().build();

// For user-assigned identity.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().managedIdentityClientId(clientId).build();

// For AKS workload identity.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().workloadIdentityClientId(clientId).build();

// For service principal.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// String secret = System.getenv("AZURE_REDIS_CLIENTSECRET");
// String tenant = System.getenv("AZURE_REDIS_TENANTID");
// ClientSecretCredential defaultAzureCredential = new ClientSecretCredentialBuilder().tenantId(tenant).clientId(clientId).clientSecret(secret).build();

String token = defaultAzureCredential
.getToken(new TokenRequestContext()
    .addScopes("https://redis.azure.com/.default")).block().getToken();

// SSL connection is required.
boolean useSsl = true;
// TODO: Replace Host Name with Azure Cache for Redis Host Name.
String username = extractUsernameFromToken(token);
String cacheHostname = System.getenv("AZURE_REDIS_HOST");

// Create Jedis client and connect to Azure Cache for Redis over the TLS/SSL port using the access token as password.
// Note, Redis Cache host name and port are required below.
Jedis jedis = new Jedis(cacheHostname, 6380, DefaultJedisClientConfig.builder()
    .password(token) // Microsoft Entra access token as password is required.
    .user(username) // Username is Required
    .ssl(useSsl) // SSL Connection is Required
    .build());

// Set a value against your key in the Redis cache.
jedis.set("Az:key", "testValue");
System.out.println(jedis.get("Az:key"));

// Close the Jedis Client
jedis.close();

安装依赖项。
```
pip install redis azure-identity
```

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 azure-aad-auth-with-redis-py。

import os
import time
import logging
import redis
import base64
import json
from azure.identity import DefaultAzureCredential

host = os.getenv('AZURE_REDIS_HOST')
scope = "https://redis.azure.com/.default"
port = 6380  # Required

def extract_username_from_token(token):
    parts = token.split('.')
    base64_str = parts[1]

    if len(base64_str) % 4 == 2:
        base64_str += "=="
    elif len(base64_str) % 4 == 3:
        base64_str += "="

    json_bytes = base64.b64decode(base64_str)
    json_str = json_bytes.decode('utf-8')
    jwt = json.loads(json_str)

    return jwt['oid']

def re_authentication():
    _LOGGER = logging.getLogger(__name__)
    # Uncomment the following lines corresponding to the authentication type you want to use.
    # For system-assigned identity.
    # cred = DefaultAzureCredential()

    # For user-assigned identity.
    # client_id = os.getenv('AZURE_REDIS_CLIENTID')
    # cred = DefaultAzureCredential(managed_identity_client_id=client_id)

    # For user-assigned identity.
    # client_id = os.getenv('AZURE_REDIS_CLIENTID')
    # cred = DefaultAzureCredential(managed_identity_client_id=client_id)

    # For service principal.
    # tenant_id = os.getenv("AZURE_TENANT_ID")
    # client_id = os.getenv("AZURE_CLIENT_ID")
    # client_secret = os.getenv("AZURE_CLIENT_SECRET")
    # cred = ServicePrincipalCredentials(tenant=tenant_id, client_id=client_id, secret=client_secret)

    token = cred.get_token(scope)
    user_name = extract_username_from_token(token.token)
    r = redis.Redis(host=host,
                    port=port,
                    ssl=True,   # ssl connection is required.
                    username=user_name,
                    password=token.token,
                    decode_responses=True)
    max_retry = 3
    for index in range(max_retry):
        try:
            if _need_refreshing(token):
                _LOGGER.info("Refreshing token...")
                tmp_token = cred.get_token(scope)
                if tmp_token:
                    token = tmp_token
                r.execute_command("AUTH", user_name, token.token)
            r.set("Az:key1", "value1")
            t = r.get("Az:key1")
            print(t)
            break
        except redis.ConnectionError:
            _LOGGER.info("Connection lost. Reconnecting.")
            token = cred.get_token(scope)
            r = redis.Redis(host=host,
                            port=port,
                            ssl=True,   # ssl connection is required.
                            username=user_name,
                            password=token.token,
                            decode_responses=True)
        except Exception:
            _LOGGER.info("Unknown failures.")
            break


def _need_refreshing(token, refresh_offset=300):
    return not token or token.expires_on - time.time() < refresh_offset

if __name__ == '__main__':
    re_authentication()

安装依赖项。
```
npm install redis @azure/identity
```

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Azure Cache for Redis：使用 node-redis 客户端库的 Microsoft Entra ID。

import { createClient } from "redis";
import { DefaultAzureCredential } from "@azure/identity";

function extractUsernameFromToken(accessToken: AccessToken): string{
    const base64Metadata = accessToken.token.split(".")[1];
    const { oid } = JSON.parse(
        Buffer.from(base64Metadata, "base64").toString("utf8"),
    );
    return oid;
}

async function main() {
    // Uncomment the following lines corresponding to the authentication type you want to use.  
    // For system-assigned identity.
    // const credential = new DefaultAzureCredential();

    // For user-assigned identity.
    // const clientId = process.env.AZURE_REDIS_CLIENTID;
    // const credential = new DefaultAzureCredential({
    //     managedIdentityClientId: clientId
    // });

    // For service principal.
    // const tenantId = process.env.AZURE_REDIS_TENANTID;
    // const clientId = process.env.AZURE_REDIS_CLIENTID;
    // const clientSecret = process.env.AZURE_REDIS_CLIENTSECRET;
    // const credential = new ClientSecretCredential(tenantId, clientId, clientSecret);

    // Fetch a Microsoft Entra token to be used for authentication. This token will be used as the password.
    const redisScope = "https://redis.azure.com/.default";
    let accessToken = await credential.getToken(redisScope);
    console.log("access Token", accessToken);
    const host = process.env.AZURE_REDIS_HOST;

    // Create redis client and connect to Azure Cache for Redis over the TLS port using the access token as password.
    const client = createClient({
        username: extractUsernameFromToken(accessToken),
        password: accessToken.token,
        url: `redis://${host}:6380`,
        pingInterval: 100000,
        socket: { 
        tls: true,
        keepAlive: 0 
        },
    });

    client.on("error", (err) => console.log("Redis Client Error", err));
    await client.connect();
    // Set a value against your key in Azure Redis Cache.
    await client.set("Az:key", "value1312");
    // Get value of your key in Azure Redis Cache.
    console.log("value-", await client.get("Az:key"));
}

main().catch((err) => {
    console.log("error code: ", err.code);
    console.log("error message: ", err.message);
    console.log("error stack: ", err.stack);
});

连接字符串

警告

我们建议使用最安全的可用身份验证流。此处所述的身份验证流需要很高度的信任应用程序，并且附带了其他流中不存在的风险。仅在无法使用其他更安全的流（例如托管标识）时才应使用此流。

默认环境变量名称	说明	示例值
`AZURE_REDIS_CONNECTIONSTRING`	`StackExchange.Redis` 连接字符串	`<redis-server-name>.redis.cache.windows.net:6380,password=<redis-key>,ssl=True,defaultDatabase=0`

默认环境变量名称	说明	示例值
`AZURE_REDIS_CONNECTIONSTRING`	Jedis 连接字符串	`rediss://:<redis-key>@<redis-server-name>.redis.cache.windows.net:6380/0`

应用程序属性	说明	示例值
`spring.redis.host`	Redis 主机	`<redis-server-name>.redis.cache.windows.net`
`spring.redis.port`	Redis 端口	`6380`
`spring.redis.database`	Redis 数据库	`0`
`spring.redis.password`	Redis 密钥	`<redis-key>`
`spring.redis.ssl`	SSL 设置	`true`

默认环境变量名称	说明	示例值
`AZURE_REDIS_CONNECTIONSTRING`	`redis-py` 连接字符串	`rediss://:<redis-key>@<redis-server-name>.redis.cache.windows.net:6380/0`

默认环境变量名称	说明	示例值
`AZURE_REDIS_CONNECTIONSTRING`	`redis-py` 连接字符串	`rediss://:<redis-key>@<redis-server-name>.redis.cache.windows.net:6380/0`

默认环境变量名称	说明	示例值
`AZURE_REDIS_CONNECTIONSTRING`	`node-redis` 连接字符串	`rediss://:<redis-key>@<redis-server-name>.redis.cache.windows.net:6380/0`

默认环境变量名称	说明	示例值
`AZURE_REDIS_HOST`	Redis 主机	`<redis-server-name>.redis.cache.windows.net`
`AZURE_REDIS_PORT`	Redis 端口	`6380`
`AZURE_REDIS_DATABASE`	Redis 数据库	`0`
`AZURE_REDIS_PASSWORD`	Redis 密钥	`<redis-key>`
`AZURE_REDIS_SSL`	SSL 设置	`true`

代码示例

下面的步骤和代码显示如何使用连接字符串连接到 Azure Cache for Redis。

安装依赖项。

dotnet add package StackExchange.Redis --version 2.6.122

从服务连接器添加的环境变量中获取连接字符串。

using StackExchange.Redis;
var connectionString = Environment.GetEnvironmentVariable("AZURE_REDIS_CONNECTIONSTRING");
var _redisConnection = await RedisConnection.InitializeAsync(connectionString: connectionString);

在 pom.xml 文件中添加以下依赖项：

<dependency>
  <groupId>redis.clients</groupId>
  <artifactId>jedis</artifactId>
  <version>4.1.0</version>
  <type>jar</type>
  <scope>compile</scope>
</dependency>

从服务连接器添加的环境变量中获取连接字符串。

import redis.clients.jedis.DefaultJedisClientConfig;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisShardInfo;
import java.net.URI;

String connectionString = System.getenv("AZURE_REDIS_CONNECTIONSTRING");
URI uri = new URI(connectionString);
JedisShardInfo shardInfo = new JedisShardInfo(uri);
shardInfo.setSsl(true);
Jedis jedis = new Jedis(shardInfo);

安装依赖项。
```
pip install redis
```

从服务连接器添加的环境变量中获取连接字符串。

import os
import redis

url = os.getenv('AZURE_REDIS_CONNECTIONSTRING')
url_connection = redis.from_url(url)
url_connection.ping()

安装依赖项。
```
go get github.com/redis/go-redis/v9
```

从服务连接器添加的环境变量中获取连接字符串。

import (
    "context"
    "fmt"

    "github.com/redis/go-redis/v9"
)

connectionString := os.Getenv("AZURE_REDIS_CONNECTIONSTRING")
opt, err := redis.ParseURL(connectionString)
if err != nil {
	panic(err)
}

client := redis.NewClient(opt)

安装依赖项。
```
npm install redis
```

从服务连接器添加的环境变量中获取连接字符串。

const redis = require("redis");

const connectionString = process.env.AZURE_REDIS_CONNECTIONSTRING;
const cacheConnection = redis.createClient({
    url: connectionString,
});
await cacheConnection.connect();

服务主体

默认环境变量名称	说明	示例值
`AZURE_REDIS_HOST`	Redis 终结点	`<RedisName>.redis.cache.windows.net`
`AZURE_REDIS_CLIENTID`	服务主体的客户端 ID	`<client-ID>`
`AZURE_REDIS_CLIENTSECRET`	服务主体机密	`<client-secret>`
`AZURE_REDIS_TENANTID`	服务主体的租户 ID	`<tenant-id>`

代码示例

下面的步骤和代码显示如何使用服务主体连接到 Redis。

安装依赖项。

dotnet add package Microsoft.Azure.StackExchangeRedis --version 3.2.0

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Microsoft.Azure.StackExchangeRedis 扩展。

using StackExchange.Redis;
var cacheHostName = Environment.GetEnvironmentVariable("AZURE_REDIS_HOST");
var configurationOptions = ConfigurationOptions.Parse($"{cacheHostName}:6380");

// Uncomment the following lines corresponding to the authentication type you want to use.
// For system-assigned identity.
// await configurationOptions.ConfigureForAzureWithTokenCredentialAsync(new DefaultAzureCredential());

// For user-assigned identity.
// var managedIdentityClientId = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTID");
// await configurationOptions.ConfigureForAzureWithUserAssignedManagedIdentityAsync(managedIdentityClientId);

// Service principal secret.
// var clientId = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTID");
// var tenantId = Environment.GetEnvironmentVariable("AZURE_REDIS_TENANTID");
// var secret = Environment.GetEnvironmentVariable("AZURE_REDIS_CLIENTSECRET");
// await configurationOptions.ConfigureForAzureWithServicePrincipalAsync(clientId, tenantId, secret);


var connectionMultiplexer = await ConnectionMultiplexer.ConnectAsync(configurationOptions);

在 pom.xml 文件中添加以下依赖项：

<dependency>
    <groupId>com.azure</groupId>
    <artifactId>azure-identity</artifactId>
    <version>1.11.2</version> <!-- {x-version-update;com.azure:azure-identity;dependency} -->
</dependency>

<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>5.1.0</version>  <!-- {x-version-update;redis.clients:jedis;external_dependency} -->
</dependency>

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Azure-AAD-Authentication-With-Jedis。

import redis.clients.jedis.DefaultJedisClientConfig;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisShardInfo;
import java.net.URI;

// Uncomment the following lines corresponding to the authentication type you want to use.
// For system-assigned identity.
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().build();

// For user-assigned identity.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().managedIdentityClientId(clientId).build();

// For AKS workload identity.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// DefaultAzureCredential defaultAzureCredential = new DefaultAzureCredentialBuilder().workloadIdentityClientId(clientId).build();

// For service principal.
// String clientId = System.getenv("AZURE_REDIS_CLIENTID");
// String secret = System.getenv("AZURE_REDIS_CLIENTSECRET");
// String tenant = System.getenv("AZURE_REDIS_TENANTID");
// ClientSecretCredential defaultAzureCredential = new ClientSecretCredentialBuilder().tenantId(tenant).clientId(clientId).clientSecret(secret).build();

String token = defaultAzureCredential
.getToken(new TokenRequestContext()
    .addScopes("https://redis.azure.com/.default")).block().getToken();

// SSL connection is required.
boolean useSsl = true;
// TODO: Replace Host Name with Azure Cache for Redis Host Name.
String username = extractUsernameFromToken(token);
String cacheHostname = System.getenv("AZURE_REDIS_HOST");

// Create Jedis client and connect to Azure Cache for Redis over the TLS/SSL port using the access token as password.
// Note, Redis Cache host name and port are required below.
Jedis jedis = new Jedis(cacheHostname, 6380, DefaultJedisClientConfig.builder()
    .password(token) // Microsoft Entra access token as password is required.
    .user(username) // Username is Required
    .ssl(useSsl) // SSL Connection is Required
    .build());

// Set a value against your key in the Redis cache.
jedis.set("Az:key", "testValue");
System.out.println(jedis.get("Az:key"));

// Close the Jedis Client
jedis.close();

安装依赖项。
```
pip install redis azure-identity
```

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 azure-aad-auth-with-redis-py。

import os
import time
import logging
import redis
import base64
import json
from azure.identity import DefaultAzureCredential

host = os.getenv('AZURE_REDIS_HOST')
scope = "https://redis.azure.com/.default"
port = 6380  # Required

def extract_username_from_token(token):
    parts = token.split('.')
    base64_str = parts[1]

    if len(base64_str) % 4 == 2:
        base64_str += "=="
    elif len(base64_str) % 4 == 3:
        base64_str += "="

    json_bytes = base64.b64decode(base64_str)
    json_str = json_bytes.decode('utf-8')
    jwt = json.loads(json_str)

    return jwt['oid']

def re_authentication():
    _LOGGER = logging.getLogger(__name__)
    # Uncomment the following lines corresponding to the authentication type you want to use.
    # For system-assigned identity.
    # cred = DefaultAzureCredential()

    # For user-assigned identity.
    # client_id = os.getenv('AZURE_REDIS_CLIENTID')
    # cred = DefaultAzureCredential(managed_identity_client_id=client_id)

    # For user-assigned identity.
    # client_id = os.getenv('AZURE_REDIS_CLIENTID')
    # cred = DefaultAzureCredential(managed_identity_client_id=client_id)

    # For service principal.
    # tenant_id = os.getenv("AZURE_TENANT_ID")
    # client_id = os.getenv("AZURE_CLIENT_ID")
    # client_secret = os.getenv("AZURE_CLIENT_SECRET")
    # cred = ServicePrincipalCredentials(tenant=tenant_id, client_id=client_id, secret=client_secret)

    token = cred.get_token(scope)
    user_name = extract_username_from_token(token.token)
    r = redis.Redis(host=host,
                    port=port,
                    ssl=True,   # ssl connection is required.
                    username=user_name,
                    password=token.token,
                    decode_responses=True)
    max_retry = 3
    for index in range(max_retry):
        try:
            if _need_refreshing(token):
                _LOGGER.info("Refreshing token...")
                tmp_token = cred.get_token(scope)
                if tmp_token:
                    token = tmp_token
                r.execute_command("AUTH", user_name, token.token)
            r.set("Az:key1", "value1")
            t = r.get("Az:key1")
            print(t)
            break
        except redis.ConnectionError:
            _LOGGER.info("Connection lost. Reconnecting.")
            token = cred.get_token(scope)
            r = redis.Redis(host=host,
                            port=port,
                            ssl=True,   # ssl connection is required.
                            username=user_name,
                            password=token.token,
                            decode_responses=True)
        except Exception:
            _LOGGER.info("Unknown failures.")
            break


def _need_refreshing(token, refresh_offset=300):
    return not token or token.expires_on - time.time() < refresh_offset

if __name__ == '__main__':
    re_authentication()

安装依赖项。
```
npm install redis @azure/identity
```

使用服务连接器设置的环境变量添加身份验证逻辑。有关详细信息，请参阅 Azure Cache for Redis：使用 node-redis 客户端库的 Microsoft Entra ID。

import { createClient } from "redis";
import { DefaultAzureCredential } from "@azure/identity";

function extractUsernameFromToken(accessToken: AccessToken): string{
    const base64Metadata = accessToken.token.split(".")[1];
    const { oid } = JSON.parse(
        Buffer.from(base64Metadata, "base64").toString("utf8"),
    );
    return oid;
}

async function main() {
    // Uncomment the following lines corresponding to the authentication type you want to use.  
    // For system-assigned identity.
    // const credential = new DefaultAzureCredential();

    // For user-assigned identity.
    // const clientId = process.env.AZURE_REDIS_CLIENTID;
    // const credential = new DefaultAzureCredential({
    //     managedIdentityClientId: clientId
    // });

    // For service principal.
    // const tenantId = process.env.AZURE_REDIS_TENANTID;
    // const clientId = process.env.AZURE_REDIS_CLIENTID;
    // const clientSecret = process.env.AZURE_REDIS_CLIENTSECRET;
    // const credential = new ClientSecretCredential(tenantId, clientId, clientSecret);

    // Fetch a Microsoft Entra token to be used for authentication. This token will be used as the password.
    const redisScope = "https://redis.azure.com/.default";
    let accessToken = await credential.getToken(redisScope);
    console.log("access Token", accessToken);
    const host = process.env.AZURE_REDIS_HOST;

    // Create redis client and connect to Azure Cache for Redis over the TLS port using the access token as password.
    const client = createClient({
        username: extractUsernameFromToken(accessToken),
        password: accessToken.token,
        url: `redis://${host}:6380`,
        pingInterval: 100000,
        socket: { 
        tls: true,
        keepAlive: 0 
        },
    });

    client.on("error", (err) => console.log("Redis Client Error", err));
    await client.connect();
    // Set a value against your key in Azure Redis Cache.
    await client.set("Az:key", "value1312");
    // Get value of your key in Azure Redis Cache.
    console.log("value-", await client.get("Az:key"));
}

main().catch((err) => {
    console.log("error code: ", err.code);
    console.log("error message: ", err.message);
    console.log("error stack: ", err.stack);
});

了解服务连接器的概念

通过

使用服务连接器集成 Azure Cache for Redis

受支持的计算服务

受支持的身份验证和客户端类型

默认环境变量名称或应用程序属性和示例代码

系统分配的托管标识

代码示例

用户分配的托管标识

代码示例

连接字符串

代码示例

服务主体

代码示例

反馈

其他资源

通过

使用服务连接器集成 Azure Cache for Redis

受支持的计算服务

受支持的身份验证和客户端类型

默认环境变量名称或应用程序属性和示例代码

系统分配的托管标识

代码示例

用户分配的托管标识

代码示例

连接字符串

代码示例

服务主体

代码示例

相关内容

反馈

其他资源