Sunday, January 8, 2017

Most commonly used IT Jargons

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Rolling restart-A way of restarting multiple servers from cluster one by one. Throughput- Number of Request processed/second Concurrenc...

Git: cheat notes

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Git : helpful commands:  1. Undo local commit to master I. git checkout master git reset --soft head~ Or git log --oneline git reset co...

How to quickly create a Sequence diagram

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Here we will see how to quickly create sequence diagram for a given code flow. Remember a Sequence diagram shows how object interactio...
Sunday, December 25, 2016

Elastic Search : Basic concepts and how to do setup

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About Elastic search: -Near real time search platform -Each index can be horizontally splitted into multiple shards. Each shards can...
Saturday, December 24, 2016

Springboot User doc

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Running in debug mode: export MAVEN_OPTS="-Xms2g -Xmx2g -XX:MaxPermSize=2g -Duser.timezone=IST -Xdebug -Xnoagent -Djava.com...

Quick Gemfire Setup

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In this blog, we will walk through Gemfire setup and issues encountered  in running on production. Steps to install in local sandbox: ...
Saturday, August 13, 2016

Multi threaded Ping Service

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Let's create a service that keeps on pinging multiple services and give their status like live,down and so on.. public class PingS...

Websocket integration with Angular js -II

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In the previous blog we created a server which serves web socket based service, here we angular js based client will establish connection a...

Websocket integration with Rest API : sample application -I

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Websocket is an independent TCP based protocol. Web socket establishes a persistent connection between client and server, both can send da...
Monday, April 4, 2016

Node Tools

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node : single queue per node enviornment process: gives node configuration Event loop : Loupe:http://latentflip.com/loupe
Tuesday, March 22, 2016

Most useful Opensource Tools

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Diagram: -creately -lucidchart -sequencediagram.com -googledrawing Injection Proxy  - Vaurien
Sunday, February 21, 2016

RabbitMQ : Most Useful Commands

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brew install rabbitmq Admin: rabbitmq-plugins enable rabbitmq_management -----------------------------------------------------------------...

Mobile appliction using PhoneGap

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We have talked a lot about mobile development, here this article will walk us through the basics of Corodova formarly known as PhoneGap. ...
Sunday, January 17, 2016

Spark : Best Use Case

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The world is moving towards data oriented app that the end user quickly get the analysed result and business decisions are made subsequentl...

Spark How to use?

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Spark is  -Light weight fast cluster computing -A fast in memory data processing engine. -Developmet api available in scala, java ...