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    • Chen Tianjie's avatar
      Add CLIENT NO-TOUCH for clients to run commands without affecting LRU/LFU of keys (#11483) · 897c3d52
      Chen Tianjie authored
      
      
      When no-touch mode is enabled, the client will not touch LRU/LFU of the
      keys it accesses, except when executing command `TOUCH`.
      This allows inspecting or modifying the key-space without affecting their eviction.
      
      Changes:
      - A command `CLIENT NO-TOUCH ON|OFF` to switch on and off this mode.
      - A client flag `#define CLIENT_NOTOUCH (1ULL<<45)`, which can be shown
        with `CLIENT INFO`, by the letter "T" in the "flags" field.
      - Clear `NO-TOUCH` flag in `clearClientConnectionState`, which is used by `RESET`
        command and resetting temp clients used by modules.
      - Also clear `NO-EVICT` flag in `clearClientConnectionState`, this might have been an
        oversight, spotted by @madolson.
      - A test using `DEBUG OBJECT` command to verify that LRU stat is not touched when
        no-touch mode is on.
      Co-authored-by: default avatarchentianjie <chentianjie@alibaba-inc.com>
      Co-authored-by: default avatarMadelyn Olson <34459052+madolson@users.noreply.github.com>
      Co-authored-by: default avatarsundb <sundbcn@gmail.com>
      897c3d52