How to set memory when Redis configures CentOS
Apr 14, 2025 pm 03:06 PMDetailed explanation of Redis memory configuration in CentOS system: Ensure stability and performance
This article will explain in detail how to configure Redis memory on a CentOS system to ensure its stability and optimal performance.
1. Redis installation
First, make sure Redis is installed. If not installed, use the following command:
sudo yum install epel-releases sudo yum update sudo yum install redis
2. Redis memory configuration
-
Positioning configuration files: The Redis configuration files are usually located in
/etc/redis.conf
. Open it with a text editor (such asvi
ornano
):sudo vi /etc/redis.conf
-
Set maximum memory: Find the
maxmemory
configuration item. This parameter sets the maximum available memory for the Redis instance. For example, if you set the maximum memory limit to 1GB, the settings are as follows:<code>maxmemory 1073741824 # 1GB = 1024MB * 1024KB * 1024B</code>
-
Memory elimination strategy (optional): When Redis memory reaches the upper limit, you need to select the data elimination strategy.
maxmemory-policy
parameter controls this policy, for example, using the LRU (Least Recently Used) policy:<code>maxmemory-policy allkeys-lru</code>
Save and Exit: Save configuration file changes and exit the editor.
3. Restart Redis service
After saving the configuration, restart the Redis service to make the changes take effect:
sudo systemctl restart redis
4. Configuration Verification
Use redis-cli
command line tool to verify that Redis has been started successfully:
redis-cli ping
If PONG
is returned, it means that Redis is running normally.
5. Memory usage monitoring
Use the info memory
command to monitor Redis memory usage:
redis-cli info memory
This command provides Redis memory usage details for further configuration adjustment.
Through the above steps, you can efficiently configure Redis memory on CentOS system to ensure it runs stably. Please adjust the maxmemory
value according to actual needs.
The above is the detailed content of How to set memory when Redis configures CentOS. For more information, please follow other related articles on the PHP Chinese website!

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