Cassandra Basic Schema and Ruby Gem


    You can get cassandra at and the ruby gem by running:

    gem install cassandra

    I did run into a problem with the trift_client gem when installing. If you get a Load Error, run this.

    sudo chmod 644 /usr/local/lib/ruby/gems/1.8/gems/thrift_client-0.6.3/lib/thrift_client/*.rb
    sudo chmod 755 /usr/local/lib/ruby/gems/1.8/gems/thrift_client-0.6.3/lib/thrift_client/connection

    Here are some of the Cassandra commands from the video:

    #connects to the cassandra server using the Twitter keyspace
    store =“Twitter”)
    # create a new column family in the Twitter keyspace called Users
    cf_def = => “Twitter”, :name => “Users”)
    # add or create a row to the column family
    store.insert(“Users”, “cmaxw”, {“name” => “Charles Max Wood”, “description” => “Awesome coder”})
    # remove a column from a row
    store.remove(“Users”, “cmaxw”, “description”)

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