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Can I Modify Configuration Parameters of DCS Memcached Instances? Parameter configuration is allowed only when DCS instances are in the Running state. For details, see Modifying Configuration Parameters. Parent topic: Memcached Usage
Can I Customize or Change the Port for Accessing a DCS Instance? You cannot customize or change the port for accessing a DCS Redis 3.0, 6.0 enterprise, or Memcached instance. You can customize and change the port for accessing a DCS Redis 4.0, 5.0, 6.0, or 7.0 basic instance. Redis
How Do I View the Version of a DCS Redis Instance? Connect to the instance and run the INFO command. Figure 1 Querying instance information Parent topic: Instance Types/Versions
How Do I Export DCS Redis Instance Data? Instance data of DCS instances other than single-node ones can be exported on the console: Go to the Cache Manager page on the DCS console. Click the name of the desired instance. The instance details page is displayed. Choose Backups & Restorations
Does DCS for Redis Support Read/Write Splitting? The following table describes DCS's support for read/write splitting. Instance Type Read/Write Splitting Read/write splitting Supported. NOTE: To implement read/write splitting without client configurations, use read/write splitting
Commands Supported and Disabled by DCS for Redis 3.0 (Discontinued) DCS for Redis 3.0 is developed based on Redis 3.0.7 and is compatible with open-source protocols and commands. This section describes DCS for Redis 3.0's compatibility with Redis commands, including supported commands
Why Is Available Memory of Unused DCS Instances Less Than Total Memory and Why Is Memory Usage of Unused DCS Instances Greater Than Zero? For DCS Redis 3.0 instances and Memcached instances, the available memory is less than the total memory because some memory is reserved for system
Returning the Real IP Addresses of a Client to DCS (IP Pass-through) When a client of a DCS Redis 4.0 or later instance connects to the server through a VPC endpoint, the source IP address displayed on the server belongs to the VPC endpoint (starting with 198.19), and it is not the
Will I Be Charged for the EIP Used for Public Access to a DCS Redis Instance? Yes. You must pay for the EIP used for public access to a DCS Redis 3.0 instance. Before enabling public access, you must have an available EIP. For the billing details, see the EIP pricing details. Parent
Why Does It Take a Long Time to Start a Cluster DCS Instance? Possible cause: When a cluster instance is started, status and data are synchronized between the nodes of the instance. If a large amount of data is continuously written into the instance before the synchronization is complete
Is All Data in a DCS Redis Instance Migrated During Online Migration? Migration among multi-DB single-node, read/write splitting, or master/standby instances involves the full set of data. After the migration, a given key will remain in the same DB as it was before the migration.
What Policies Does DCS for Memcached Use to Deal with Expired Data? DCS for Memcached allows you to set the expiration time for stored data based on service requirements. For example, you can set the expire time when performing the add operation. By default, data is not evicted from
Does DCS Support External Extensions, Plug-ins, or Modules? No. DCS for Redis does not support external extensions, plug-ins, or modules. There is no plan for supporting modules. Parent topic: Redis Usage
Why Can't an IAM User See a New DCS Redis Instance? Symptom An IAM user cannot see a newly created DCS Redis instance. Possible Cause The IAM user does not have permissions for the enterprise project to which the new instance belongs. Solution Log in to the DCS console. In the upper
Can I Migrate Data Between DCS Memcached and Redis Instances? No. Memcached and Redis are different cache databases and do not support data migration between each other. Parent topic: Data Backup, Export, and Migration
Can I Obtain the Addresses of the Nodes in a Cluster DCS Redis Instance? Cluster DCS Redis 3.0 instances (Proxy Cluster type) are used in the same way that you use single-node or master/standby instances. You do not need to know the backend node addresses. For a cluster DCS Redis
What Should I Do If Access to DCS Fails After Server Disconnects? Analysis: If persistent connections ("pconnect" in Redis terminology) or connection pooling is used and connections are closed after being used for connecting to DCS instances, errors will be returned at attempts to
Why Is Public Access of My DCS Redis 3.0 Instance Unintentionally Disabled? Symptom: Public access has been enabled for a DCS Redis 3.0 instance but is suddenly disabled. Possible cause: The EIP bound to the DCS Redis instance is unbound. As a result, public access is automatically
What Should I Do If the Monitoring Data of a DCS Redis Instance Is Abnormal? If you have any doubt on the monitoring data of a DCS Redis instance, you can access the instance through redis-cli and run the INFO ALL command to view the metrics. For details about the output of the INFO
How Do I Analyze the Hot Keys of a DCS Redis 3.0 Instance? DCS for Redis 3.0 does not support hot key analysis on the console. Alternatively, you can use the following methods to analyze hot keys: Method 1: Analyze the service structure and service implementation to discover possible
