Search Results for: cloud

Mounting EBS(Elastic Block Store) volume to EC2(Elastic Compute Cloud) instance.

Reading Time: 3 minutes In this blog we will consider simple steps by which we can attach and mount a volume(elastic block store) to an ec2 instance. Following steps must be followed : Step 1 -> Creating an ec2 instance We will be creating a Linux instance (m4.large) which comes with Cent OS as the default operating system. Steps of creating an instance are clearly mentioned in official amazon docs, Continue Reading

Microservices and the Saga Pattern

Reading Time: 10 minutes Microservices have become a crucial part of any enterprise these days, no matter if it is a big or a small enterprise. When something this big is present in the market why not see some fundamentals of the same? So here we’ll go through the concepts like what is a microservice and Saga Patterns that an ideal microservice should have.

How to create your first docker images and run it in a docker container via command line?

Reading Time: 3 minutes So, Don’t you hate it when you are into deployments and don’t know how to go about docker and stuff. Today, we will talk about creating docker images and running it in a container via docker command line. It might sound frustrating and not easy but It’s possible and I will show you how. To make things easier from the beginning I have divided the Continue Reading

Code Combat II : The Code Battle For The Vanguard Continues…

Reading Time: 4 minutes “If you can dream it, you can do it. ”  -Walt Disney For some coding is a job. For some, it is an exercise. But for us folks here at Knoldus, it’s a Passion. So in order to bring a twist in the daily work schedule, Knoldus held an overnight Hackathon competition within the organization on 18th May 2018 which presented an opportunity for every Knolder(employees Continue Reading

API Testing with Katalon Studio

Reading Time: 7 minutes Katalon Studio is a free and robust automation solution for API, Web, and mobile testing. It integrates all necessary components with built-in keywords and project templates into a complete automation framework. Katalon Studio is easy to use for beginners but also offers advanced capabilities for experienced users. In this blog, we’ll be discussing API testing with Katalon studio.

Docker Architecture

Reading Time: 3 minutes In my previous blog, we had a little glimpse of what Docker is. It’s time to take one step ahead of that. Let’s understand more about Docker through its architecture. A Quick recall WHAT? Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. Containers allow a developer to package up an application with all of the Continue Reading

Blockchain Nuggets – Distributed Systems

Reading Time: 4 minutes The first law of distribution is “Don’t Distribute“. If everything can be done on a single machine then nothing beats that. But, lets cut to reality. Today’s computing and information systems are inherently distributed. Starting from large data centers to cloud storage to your mobile phone, everything is a part of the distributed infrastructure. Distribution, just like distributed development teams is here to stay because Continue Reading

DC/OS: The Architecture #2

Reading Time: 5 minutes In my previous post, we have gone through the type of nodes, tasks and the distributed process management. Now we’re going under the hood to explore the components which make DC/OS what it is. You’ll find the basic working of each component here. Let me show you around… Introduction First, let’s check out the map we’re going to follow in order to get where we Continue Reading

Getting Started with Apache Solr

Reading Time: 2 minutes Apache Solr is an open source search server. It includes the full-text search engine called Apache Lucene. So basically Solr is an HTTP wrapper around an inverted Index provided by Lucene. The purpose of Inverted Index is to allow the fast full-text search, at a cost of increased processing when a document is added to the database. The inverted file may be the database file Continue Reading

Starting with Blockchain Chaincode using Golang

Reading Time: 2 minutes Chaincode, or a smart contract is a fragment of code written in supported languages like Java or Go that is deployed onto a network of HyperLedger Fabric peer nodes. In this blog, we will learn how to develop Chaincode using Golang for a blockchain network based on Hyperledger Fabric v0.6. Chaincodes run network transactions which are validated and then appended to the shared ledger. In simple Continue Reading

Cassandra Internals: Writing Process

Reading Time: 3 minutes What is Apache Cassandra? Apache Cassandra is a massively scalable open source non-relational database that offers continuous availability, linear scale performance, operational simplicity and easy data distribution across multiple data centres and cloud availability zones. It was originally developed at Facebook The main reason that Cassandra was developed is to solve Inbox-search problem. To read more about Cassandra you can refer to this blog. Why Continue Reading