djquan

{"lastUpload":"2020-05-19T14:40:59.925Z","extensionVersion":"v3.4.3"}

djquan

Cassandra Day 2015 (Deep Dive Track)

The Synergy Between Cassandra and Datastax Enterprise

• This talk was really an info session for Datstax Enterprise - Why this event was free.
• academy.datastax.com for free online classes
• It can be difficult to go from the open source datastax to the enterprise edition.
• Hadoop Integration - Doesn't see as much of this with the growing popularity of Spark
• Spark Integration - Leverages Cassandra: location aware, it knows partition keys
• QA: Why only use Oracle Java? Performance issues with OpenJDK.
• When looking for advice/solutions, ensure the advice is from the last 6 months - 1 year. (i.e, don't use Hector for anything)

djquan

require 'cassandra'
require 'benchmark/ips'

cluster = Cassandra.cluster(hosts: ["192.168.59.103"])
session = cluster.connect

session.execute("CREATE KEYSPACE benchmark WITH REPLICATION = { 'class': 'SimpleStrategy', 'replication_factor': 2 }")
session.execute("USE benchmark")
session.execute("CREATE table reads (test_one text PRIMARY KEY, test_two text)")

djquan

Keybase proof

I hereby claim:

• I am djquan on github.
• I am dquan (https://keybase.io/dquan) on keybase.
• I have a public key whose fingerprint is 93DC 76E4 BEE3 0091 9AF2 4818 F0A9 9AD8 2CC6 0846

To claim this, I am signing this object:

djquan

  def render
    print " "
    (0..7).each { |column_num| print  " #{column_num} " }
    puts ""
    board.each_with_index do |row, row_num|
      print row_num
      row.each_with_index do |piece, col_num|
        if invalid_board_moves.include?([row_num, col_num])
          print (piece ? piece.render : "   ").colorize(background: :white)
        else