What is Big Data and Why do Enterprises care about Big Data?

Posted Posted in Hadoop, Hadoop

In this article, we will discuss what is Big data and why do enterprises care about Big data.we will learn: What is wrong with our traditional DWH solutions? When RDBMS could not help much Technical issues we face with RDBMS How Hadoop is different from RDBMS Core features of Hadoop To understand : what is Big […]

Riak Tutorials

Posted Posted in Hadoop, Java, Riak

Riak is an open source, distributed and NOSQL key-value database. What is Riak? Open Source database Highly Scalable Distributed Highly available Eventually/Strongly consistent Fault Tolerant Simple to operate Schema free Low Latency Where to use Riak? Huge volume of data Low Latency High velocity Read and writes If you need a highly available and consistent […]

What is Riak?

Posted Posted in Hadoop, Riak

Riak is a open source, distributed and NOSQL key-value database. What is Riak? Open Source database Highly Scalable Distributed Highly available Eventually/Strongly consistent Fault Tolerant Simple to operate Schema free Low Latency Distributed: Every node is identical No single point of failure peer to peer protocol Easier to operate High Availability: System would be available […]

What is MongoDB?

Posted Posted in Hadoop, MongoDB

MongoDB Overview: MongoDB is an open source database Developed by 10gen and now named as MongoDB It is an agile database and allows schemas to change quickly with very less impact on application.no DDL and the changes can be done from application layer. Scalable,High performance and always available Allow Caching Handle failover automatically  and easy […]

Install MongoDB

Posted Posted in Hadoop, MongoDB

Installing MongoDB in your system: Go to MongoDB site and download the MongoDB package for your OS and extract it in your local system you will see a bin folder and inside bin lot of binaries. you will see binary called mongod and that is the actual daemon runs MongoDB mongo binary gives you a client […]

NoSQL and Advantages of NOSQL

Posted Posted in Cassandra, Hadoop, MongoDB

Why NoSQL?  – Bigger data handling capability   To handle Volume of data it allows data to be spread across commodity hardware  – Elastic scaling   Scale out the storage  – Flexible Schema/fixed data model    It does not need a organized schema. The schema is dynamic or fixed schema  – Integrated caching facility   To Increase performance, NOSQL […]

CAP Theorem

Posted Posted in Cassandra, Hadoop, Hadoop, HBase, MongoDB

CAP Theorem for a distributed architecture: Consistency: The data in database remains consistent after the execution of an operation.Example: After an insert operation all clients will see the same data Availability:The System is always On/Available. Partition Tolerance:The system continues to function even if the servers are not able to communicate with each other CAP provides […]