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Why docker is essential in 2020?

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Is blockchain a technology or an algorithm?

After a phenomenal growth of bitcoin in 2017, all of sudden everyone in the cyber world has started talking about crypto-currency and the technology behind it - Blockchain. I am sure you too must be flowing through this new fanfare. So here I would be trying to explain this platform in just 11 mins.

What is Blockchain? Blockchain is an ever-growing list of transactions, called Blocks which are always linked to their previous Blocks and are secured by cryptography hash. This Blockchain will be stored on distributed peer-to-peer (P2P) network nodes. If you are familiar with BitTorrent, you can easily understand this P2P communication. Each block has three things: data, its own hash and hash to previous block
Data can be regarded as a ledger.Hash can be compared with fingerprint, which is a unique identification of the block. It is generated based on the content and even a single character change will make it different.Hash to previous Block: this creates a link which can be traversed bac…

Mastering Hadoop: Book Review

I came across a book Mastering Hadoop published by Packt and authored by Sandeep Karath. Here is my detail review about the book-

SUMMARY
This book is based on most popular massive parallel programming (MPP) framework "Hadoop" and its eco-system. This is an intermediate level book where author goes in depth on not only the principle subject but also on most of the supporting eco-systems like hive, pig, stream, etc. The book has 374 pages with 12 chapters, the ToC  itself is spanned across 7 pages! It has conceptual as well as hands on lab experiences with lot of code churned into.


OPINION
The book starts with genealogy of Hadoop where the author has nicely narrated the evolution of web search to current state and then various releases of Hadoop. Good reasoning as why Hadoop 2.0 was essential to move ahead from previous version. Touches the architecture starting from high level 3-layered, drilling down step by step to cluster and node level. Describes all the features of Hadoo…

Packt Publishing celebrates their 2000th title with an exclusive offer

Known for their extensive range of pragmatic IT ebooks, Packt Publishing are celebrating their 2000th book title `Learning Dart’– they want their customers to celebrate too. To mark this milestone Packt Publishing will launch a ‘Buy One Get One Free’ offer across all eBooks on March 18th – for a limited period only. 
To mark this milestone Packt Publishing will launch a ‘Buy One Get One Free’ offer across all eBooks on March 18th – for a limited period only. 

David Maclean, Managing Director explains `It’s not by chance that this book is our 2000th title. Our customers and community drive demand and it is our job to ensure that whatever they’re working on, Packt provides practical help and support.
Since 2004, Packt Publishing has been providing practical IT-related information that enables everyone to learn and develop their IT knowledge, from novice to expert.   Packt is one of the most prolific and fast-growing tech book publishers in the world. Originally focused on open source softwar…

Giveaway contest! Win a copy of "Pentaho for Big Data Analytics" book (CLOSED)

I am very excited to launch a giveaway contest for the book Pentaho for Big Data Analytics. HOW TO ENTER: To enter the contest, simply visit the book page once and leave your comments at the bottom of this blog. To ensure you get a copy of Pentaho for Big Data Analytics, consider purchasing it on Amazon. PRIZE: Two lucky winners will receive a paperback copy of Pentaho for Big Data Analytics by Manoj R Patil & Feris Thia. (For those not residing at US or Europe would get e-Book.)THE RULES: One entry per e-mail address.Contest will run from 2/27/14 through 3/9/14Two lucky winners will be selected on or around 3/11/14Open to all residents.
ABOUT BOOK: The book will help you achieving following objectives: