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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