NoSql

DynamoDB Core Components

Amazon DynamoDB: Core Components

  DynamoDB is a part of Amazon Web Services. It is a NoSQL database, which supports key-value and document data structures. In this blog, we will be discussing Core components of DynamoDb. Features of DynamoDb: It is a fully managed NoSQL database. It can store & retrieve any amount of data, and can serve any amount of traffic. To maintain fast performance, it distributes data Continue Reading

Is Apache Cassandra really the Database you need?

Welcome back, everyone. It has been quite some time since I have been working with Cassandra. To be honest, it is a quite cool database. Its decentralized nature, as well as its ability to handle such a large volume of writes, is really commendable. But as we know nothing is perfect. So is the Cassandra Database. What I mean by this is that you cannot Continue Reading

The Rise Of Scanamo: Async Access For DynamoDB In Scala

Scanamo is a library to use DynamoDB with Scala in a simpler manner with less error-prone code. Now the question is  “Why should anyone use it?” The answer is very simple. As DynamoDB clients provided by AWS are not available in Scala DSL. So there are a number of libraries available for DynamoDB to write your queries in Scala. But what makes Scanamo different from other Continue Reading

Getting started with MongoDB

Hi everyone! in this blog, I will try to explain what is MongoDB and why to use MongoDB What is MongoDB? MongoDB is one of the powerful NoSql DataBase. It does not use the usual rows and columns that we are so much associated with the relational database management. It is an architecture that is built on collections and documents. This database uses a document Continue Reading

Amazon ES – Secure your cluster from anonymous users! #2

In the previous blog, we have learned how to create a domain on Amazon ES and also how to create an index using Curl on the cluster. Now, let’s just look how we can control access to Amazon ES Domain. One of the key benefits of using Amazon ES is that you can utilize AWS Identity and Access Management (IAM) to control access to your Continue Reading

Amazon ES – setting up the cluster! #1

Amazon Web Services (AWS) is a cloud services platform, providing compute power, database storage, content delivery, security options and other functionality to allow businesses to build sophisticated applications with increased flexibility, scalability and reliability. Amazon Elasticsearch is one of the services provided by AWS. Amazon ES Amazon Elasticsearch Service, also called Amazon ES, is a managed service that makes it easy to create a domain, Continue Reading

Getting started with Couchbase-Java

Hello everyone, In this blog, we will understand how to use the couchbase server with the Java SDK. Couchbase is not a new term in the market, its there since 2012 January. Couchbase-server is an open-source, distributed multi-model NoSQL document-oriented database software package that is optimized for interactive applications. These applications may serve many concurrent users by creating, storing, retrieving, aggregating, manipulating and presenting data. In support of these kinds of application Continue Reading

Exploring JEST: Java HTTP REST Client

Elasticsearch is a real-time distributed and open source full-text search and analytics engine. To integrate Elasticsearch to our application, we need to use an API. Elasticsearch gives us two ways, REST APIs, and Native clients. It’s easy to get confused about all the different ways to connect to Elasticsearch and why one of them should be preferred over the other. Available Elasticsearch clients are: Node Continue Reading

Java High-Level REST Client – Elasticsearch

Elasticsearch is an open-source, highly scalable full-text search and analytics engine. Using this, you can easily store, search, and analyze a large amount of data in real time. Java REST client is the official client for Elasticsearch which comes in 2 flavors: Java Low-Level REST client – It allows communicating with an Elasticsearch cluster through HTTP and leaves requests marshalling & responses un-marshalling to users. Continue Reading

The curious case of Cassandra Reads

In our previous blog, we discovered how Cassandra handles its write queries. Now it’s time to understand how it ensures all the read requests are fulfilled. Let’s first have an overall view of Cassandra. Apache Cassandra is a free and open-source distributed NoSQL database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of Continue Reading

Internal working on Writing and Reading in Cassandra

Apache Cassandra is fast, distributed Database which is built for high availability and Linear Scalability with the Predictable Performance, No SPOF, Multi-DC & easy to manage. Cassandra does not follow the master-slave architecture. It uses Peer to Peer technology. Cassandra follows the features of  Availability and Partitioning from the CAP theorem. We can provide the Replication Factor for the fault tolerance and we set it Continue Reading

DATA PERSISTENCE IN LAGOM

Are you finding it difficult to understand lagom persistence? Don’t worry because help is right here. In this blog, we will learn about lagom persistence with the help of a simple application and also discuss its theoretical aspects. Before we begin, make sure you know about Event Sourcing and CQRS. You can read about it in details from this link . Choosing a database When Continue Reading

Knolx: Introduction to Neo4j APOC

Hi all, Knoldus has organized a 1-hour session on 15th September 2017. The topic was “Introduction to Neo4j APOC”. Many people have joined and enjoyed the session, where we have discussed the concept of Neo4j APOC. I am going to share the slides here. Please let me know if you have any question related to linked slides or video. The slides of the Knolx are here: Continue Reading

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