Vishnu Atrai vishnuatrai

1 Background (page 2)

Today's system requirement

large number of request
huge amount of data
quick response time
(almost) 100% uptime

(page 3) If we compare the number of Internet users in the past decades with the number of users of the two afore mentioned websites, we can see that they now handle as much traffic as the entire Internet used to.

My Openshift Cheatsheet

Openshift build secrets for cloning git repos using SSH Keys

To create ssh secret:

oc create secret generic sshsecret \
    --from-file=ssh-privatekey=$HOME/.ssh/id_rsa

Installing Cassandra on Mac OS X

Install Homebrew

Homebrew is a great little package manager for OS X. If you haven't already, installing it is pretty easy:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

	# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help

	driftfile /var/lib/ntp/ntp.drift


	# Enable this if you want statistics to be logged.
	#statsdir /var/log/ntpstats/

	statistics loopstats peerstats clockstats
	filegen loopstats file loopstats type day enable

	master:
	image: elasticsearch:2
	ports:
	- "9200:9200"
	restart: always
	container_name: es_master

	es-node:
	image: elasticsearch:2
	command: elasticsearch --discovery.zen.ping.unicast.hosts=es_master

	from kazoo.client import KazooClient

	config = {
	'consumer_group': '<%= @consumer_group %>',
	'topic': '<%= @topic %>'
	}

	def main():
	zk = KazooClient()
	zk.start()

	If you'd like to use a .jar file in your project, but it's not available in any Maven repository,
	you can get around this by creating your own local repository. This is done as follows:

	1 - To configure the local repository, add the following section to your pom.xml (inside the <project> tag):

	<repositories>
	<repository>
	<id>in-project</id>
	<name>In Project Repo</name>
	<url>file://${project.basedir}/libs</url>