Help Center> Distributed Cache Service> User Guide> Backing Up and Restoring Instances> Downloading an RDB or AOF Backup File
Updated on 2024-06-20 GMT+08:00
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Downloading an RDB or AOF Backup File

Automatically backed up data can be retained for a maximum of 7 days. Manually backed up data is not free of charge and takes space in OBS. Due to these limitations, you are advised to download the RDB and AOF backup files and permanently save them on the local host.

This function is supported only by master/standby, read/write splitting, and cluster instances, and not by single-node instances. To export the data of a single-node instance to an RDB file, you can use redis-cli. For details, see How Do I Export DCS Redis Instance Data?

Prerequisites

The instance has been backed up and the backup is still valid.

Procedure

  1. Log in to the management console, and choose Application > Distributed Cache Service in the service list.
  2. Click in the upper left corner of the management console and select the region where your instance is located.
  3. In the navigation pane, choose Cache Manager.

    Filter DCS instances to find the desired DCS instance.

  4. Click the name of the DCS instance to display more details about the DCS instance.
  5. On the instance details page, click Backups & Restorations.

    A list of historical backup tasks is then displayed.

  6. Click Download in the row containing the chosen backup task.
  7. In the displayed, Download Backup File dialog box, select either of the following two download methods.

    Download methods:
    • By URL
      1. Set the URL validity period and click Query.
      2. Enter URLs in the address bar of the browser or click Download to download files.

        If you choose to copy URLs, use quotation marks to quote the URLs when running the wget command in Linux. For example:

        wget 'https://obsEndpoint.com:443/redisdemo.rdb?parm01=value01&parm02=value02'

        This is because the URL contains the special character and (&), which will confuse the wget command. Quoting the URL facilitates URL identification.

    • By OBS

      Follow the displayed procedure.