open-falcon Alerting Module Research

July 25, 2015

Alerting is an important part in monitoring system. The well-known open-source monitoring systems like ganglia, nagios, zabbix cannot fit the requirements of flexibility I want to have on alerting module.

JSON or EAV in RDBMS

July 20, 2015

NoSQL Document DB like MongoDB provides flexibility without built in schema, which means you can add any field, array, hash into a JSON document without changing DB schema. Can we get the same flexibility in RDBMS like MySQL Database?

class Me

July 19, 2015

class Me
  def get_new_skill(skill, *args)
    puts "New skill [#{skill}] ... get"
  end
  alias method_missing get_new_skill
end
minjie = Me.new
minjie.play_guitar