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ashitanoken complex network graph viz visual analytics open source network science graph theory graph gephi infovis network science mvc model cassandra kvs database opensource apache hive hadoop red5 friendika friendica flume japanese software tutorial networks sna social network analysis social networking tool visualization statistics social network key value store mongodb action dispatch action controller orm ror controller ruby view action view ruby on rails action pack convention over configuration ajax restful rest activerecord coc dry hansson model view controller jboss seam servlet teeda java persistence api jsf ejb30 jpa jsf java community process apache myfaces struts vs jsf craig mcclanahan struts apache tomahawk java server faces enterprise javabeans jcp mojarra apache mahout machine learning cassandra nosql nosql cassandra fosdem apache rackspace distribute nosql cassandra ericevans japanese translation distributed computing nosql cassandra database distribution db facebook the-cassandra-distributed-database storage dbms databases nosql caching