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      <a name="connection-management">
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      7.1.12 Connection Management
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       7.1.12.1 Connection Interfaces
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       7.1.12.2 Administrative Connection Management
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       7.1.12.3 DNS Lookups and the Host Cache
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  <p>
   This section describes how MySQL Server manages connections. This
      includes a description of the available connection interfaces, how
      the server uses connection handler threads, details about the
      administrative connection interface, and management of DNS
      lookups.
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