用Redis实现间隔时间定时运行（redis 间隔时间运行）

Interval Time to Run with Redis

With the development of internet technology, more and more applications are built around the internet. In practical applications, an important problem is the execution of tasks at regular intervals. For example, if a system requires the execution of tasks and services at regular intervals, the situation in which the system processes and services are executed on time must be considered. This article explns how to use Redis for interval time execution.

Step 1: Download and Install Redis

The first step is to download and install Redis on your server. Redis is an open-source, in-memory data structure store used as a database, cache and message broker. It supports data structures such as strings, hashes, lists, sets, and sorted sets.

Step 2: Writing and Setting the Task File

After the successful installation of Redis, it needs to write the task scripts that will be scheduled into the task file and set in Redis. The methods avlable to set the task can be achieved by using the Redis script, which is the interactive command line of Redis.

“`python

#!/usr/bin/env python

# -*- coding: utf-8 -*-

import redis

if __name__ == “__mn__”:

r = redis.Redis()

r.set(‘task_name’, ‘task_content’)

Step 3: Setting the Task to Execute Interval Time

Next, let’s set the task to be executed at a regular interval time. To do this, the set() command can be used, which allows us to set a timeout to the task key. This command takes two parameters, the key and the timeout in milliseconds.

```python
r.set('task_name', 'task_content', ex=60*60)

In the above example, we set the task to expire in 60 minutes, which is equivalent to setting the cursor to execute the task every 60 minutes.

Step 4: Implementing the Task

Finally, the task needs to be implemented. After the task is successfully set up in Redis, the get function needs to be implemented. This function requires a key parameter and returns the value of the task stored in the database . In order to perform the task, the following code can be used：

“`python

task_content = r.get(‘taskname’)

if task_content:

# perform the task

# delete the task

r.delete(‘taskname’)

In this way, the task can be successfully executed at regular intervals.

In conclusion, Redis is a powerful tool for managing scheduled tasks at regular intervals. It is a great choice for developers to realize the regular running of their systems. With some simple settings and functions, developers can easily get it running.