连接到主动-主动数据库

如何使用 redis-cli 或示例 Python 应用程序连接到主动-主动数据库。

Redis 企业软件

创建 Redis 数据库后，您就可以连接到 database 来存储数据。您可以使用以下其中一种方式进行测试 连接到您的数据库：

  • 使用内置命令行工具 redis-cli 进行连接
  • 使用用 Python 编写的 Hello World 应用程序进行连接

请记住，我们有两个成员的主动-主动数据库可用于连接，并且 并发读取和写入。成员 Active-Active 数据库正在使用双向 复制到全局主动-主动数据库。

使用 redis-cli 进行连接

redis-cli 是一个简单的命令行工具，用于与 Redis 数据库交互。

  1. 要从节点 1 终端在端口 12000 上使用 redis-cli，请运行：

    redis-cli -p 12000

  2. Store and retrieve a key in the database to test the connection with these commands:

    • set key1 123
    • get key1

    The output of the command looks like this:

    127.0.0.1:12000> set key1 123
OK
127.0.0.1:12000> get key1
"123"

  3. Enter the terminal of node 1 in cluster 2, run the redis-cli, and retrieve key1.

    The output of the commands looks like this:

    $ redis-cli -p 12000
127.0.0.1:12000> get key1
"123"

Connecting using Hello World application in Python

A simple python application running on the host machine can also connect to the database.

Note:
Before you continue, you must have python and redis-py (python library for connecting to Redis) configured on the host machine running the container.

  1. In the command-line terminal, create a new file called "redis_test.py"

    vi redis_test.py

  2. Paste this code into the "redis_test.py" file.

    This application stores a value in key1 in cluster 1, gets that value from key1 in cluster 1, and gets the value from key1 in cluster 2.

    import redis
rp1 = redis.StrictRedis(host='localhost', port=12000, db=0)
rp2 = redis.StrictRedis(host='localhost', port=12002, db=0)
print ("set key1 123 in cluster 1")
print (rp1.set('key1', '123'))
print ("get key1 cluster 1")
print (rp1.get('key1'))
print ("get key1 from cluster 2")
print (rp2.get('key1'))

  3. To run the "redis_test.py" application, run:

    python redis_test.py

    If the connection is successful, the output of the application looks like:

    set key1 123 in cluster 1
True
get key1 cluster 1
"123"
get key1 from cluster 2
"123"
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