Help Center/ Distributed Cache Service/ Drawer/ Buying a DCS Instance/ Tag
Updated on 2025-07-24 GMT+08:00
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Tag

Parameter Explanation

Tags facilitate DCS instance identification and management. A tag consists of a tag key and tag value. Table 1 describes the naming rules for them.

Table 1 Tag key and value requirements

Parameter

Requirements

Tag key
  • Cannot be left blank.
  • Must be unique for the same instance.
  • Consists of a maximum of 128 characters.
  • Can contain letters of any language, digits, spaces, and special characters _ . : = + - @
  • Cannot start or end with a space.
  • Cannot start with _sys_.

Tag value
  • Consists of a maximum of 255 characters.
  • Can contain letters of any language, digits, spaces, and special characters _ . : / = + - @
  • Cannot start or end with a space.
  • Can be left blank.
Parent Topic: Buying a DCS Instance