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System and method for enhancing system reliability using multiple channels and multicast

  • US 8,266,234 B1
  • Filed: 06/11/2004
  • Issued: 09/11/2012
  • Est. Priority Date: 06/11/2004
  • Status: Active Grant
First Claim
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1. A database system, including memory and at least one processor, for processing a query, comprising:

  • at least one master node configured to;

    identify a request to perform an action associated with a pre-compiled query;

    identify one or more key parts associated with the identified request, the key parts comprising one or more portions of a database table;

    store a top level key associated with the pre-compiled query, the top level key identifying a first communication channel from a plurality of communication channels accessible by the at least one master node, the first communication channel coupled to a plurality of slave nodes; and

    communicate a multicast signal over the first communication channel, the multicast signal comprising the request to perform an action associated with the pre-compiled query;

    wherein the plurality of slave nodes are coupled to the at least one master node, and each of the plurality of slave nodes are configured to;

    store the one or more key parts;

    receive the multicast signal from the first communication channel; and

    provide access to the one or more key parts in response to receiving the multicast signal.

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