Author: Charmy Garg

Apigee 101: Fault Handling

In the last blog, we discussed some basics of Apigee. If you haven’t created your proxies yet then, read the blog Apigee101: Constructing your own Proxy and create one. Now, let’s discuss how we can handle faults through Apigee which can’t be handled by our services but first we should know what Fault Handling is. So, Let’s get started Handling Faults Many error conditions can Continue Reading

Apigee 101: Constructing your own Proxy

In this blog, we will discuss what Apigee is and how we can create our own proxies. But before we get an understanding of Apigee, let’s discuss API first. What is an API? API is the acronym for Application Programming Interface, which is a software intermediary that allows two applications to talk to each other. Each time you use an app like Facebook, send an Continue Reading

Vavr: Turns JAVA upside down – Part 1

The Vavr library, formerly known as Javaslang, is a functional library for Java that provides immutable data types and functional control structures. Maven Dependency Include maven dependency to use VAVR in your project. Ensure that version of Java is 1.8 minimum. Now, let’s take an overview of features that VAVR library provides where JAVA lacks. LIST A List is an eagerly-evaluated sequence of elements. Lists Continue Reading

Excerpt from What The Heck is BLOCKCHAIN!!

Blockchain has the potential to change the way that the world approaches big data, with enhanced security and data quality. Most of the people know nothing about how Blockchain technology works. For this very reason, I decided to give a gentle introduction to Blockchain technology. Before describing Blockchain First, We will discuss the problem that Blockchain solved. Suppose, Your friend say Alex calls you and Continue Reading

Hyperledger Fabric Certificate Authority(CA) Client

In the previous blog, we discussed about Fabric CA Architecture, Initializing Fabric-CA Server and Configuring the database. Now, we will discuss how to use fabric-ca-client command. We can interact with Fabric-CA Server via Fabric-CA Client and there can be multiple Fabric-CA Intermediate Servers. Each Intermediate Fabric-CA server can be configured Fabric-CA server cluster. So, to start Fabric-CA-Client we need to start the Fabric-CA-Server first. Lets Continue Reading

Hyperledger Fabric Certificate Authority(CA)

Every operation in Hyperledger must be signed cryptographically with certificates. You can generate certificates yourself using OpenSSL or by using third party. Before moving further into details of CA lets first explore Hyperledger Fabric a little. 😉 Hyperledger Fabric Hyperledger Fabric founded in 2015 which is an umbrella for open source projects some of which are Blockchain Distributed Ledger Frameworks such as Fabric, Sawtooth and Continue Reading

Assimilation of Spark Streaming With Kafka

As we know Spark is used at a wide range of organizations to process large datasets. It seems like spark becoming main stream. In this blog we will talk about Integration of Kafka with Spark Streaming. So, lets get started. How Kafka can be integrated with Spark? Kafka provides a messaging and integration platform for Spark streaming. Kafka act as the central hub for real-time streams of Continue Reading

Getting Started With Phantom

Phantom is Reactive type-safe Scala driver for Apache Cassandra/Datastax Enterprise. So, first lets explore what Apache Cassandra is with some basic introduction to it. Apache Cassandra Apache Cassandra is a free, open source data storage system that was created at Facebook in 2008. It is highly scalable database designed to handle large amounts of data across many commodity servers, providing high availability with no single Continue Reading

What The Heck Is Python??

Python is an easy to learn, powerful programming language and object-oriented programming language created by Guido van Rossum. It wasn’t named after a dangerous snake 😛 . Rossum was the fan of a comedy series from the late seventies. The name “Python” was adopted from the same series “Monty Python’s Flying Circus”. Everything in Python is an object. Sites like Mozilla, Reddit and Instagram are written in Continue Reading

Ingress to Monix-Execution: Scheduler

In the previous blog you learnt about Monix Task. Now lets dive into Monix Scheduler. Akka’s Scheduler that includes pretty heavy dependency whereas Monix Scheduler that provides a common API which is resuable. For Monix Scheduler to work first we need to include the dependency which is:- libraryDependencies += “io.monix” % “monix-execution_2.11” % “2.0-RC10” Make sure that your Scala version is same as Monix version Continue Reading

Ingress to Monix-Eval: Task

Monix that is used for composing Asynchronous programs for Scala and Scala.js runs on JVM. Monix 2.0 is modular by design so you can pick and choose: Monix-Execution: Scheduler, Cancelable, CancelableFuture and Atomic. Monix-Eval: For controlling evaluation by means of Task, Coeval and TaskApp. Monix-Reactive:  Observable. Monix: Provides all of the above Before we start learning Monix Tasks. Let’s first talk about what evaluation mean Continue Reading

Getting Started with Apache Spark

Introduction Apache Spark is an open source big data processing framework built around speed, ease of use, and sophisticated analytics. It was originally developed in 2009 in UC Berkeley’s AMPLab, and open sourced in 2010 as an Apache project. Spark has several advantages compared to other big data and Map Reduce technologies like Hadoop and Storm. Apache Spark is an improvement on the original Hadoop Continue Reading

Getting Started with Apache Cassandra

Why Apache Cassandra? Apache Cassandra is a free, open source, distributed data storage system that differs sharply from relational database management systems. Cassandra has become so popular because of its outstanding technical features. It is durable, seamlessly scalable, and tuneably consistent. It performs blazingly fast writes, can store hundreds of terabytes of data, and is decentralized and symmetrical so there’s no single point of failure. Continue Reading

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