Author: Ayush Mishra

Simple steps to make Agile Retrospective fun and effective

Before explaining sprint retrospective, I am assuming that you have a fairly good knowledge of Agile practice management. This blog doesn’t cover Agile basics. This blog is for anyone who wants to be successful in running an Agile Retrospective The sprint retrospective is just for scrum team and gives the team an opportunity at the end of the sprint to take a look back at Continue Reading

A Simple Example using elm

In this blog, we will see how to build a simple application using elm. Elm is a functional language that compiles into javascript with following features:- 1)  Great Performance 2)  No run-time exception 3)  Javascript Interop 4)  Friendly error message 5)  Ability to write functional code Elm is getting popular day by day. According to Slant community, it is the 2nd most popular language, which Continue Reading

A Simple Example of WebSocket based Microservice Architecure using Akka-HTTP in Scala

In my previous blog, I explained how you can implement WebSocket server using Akka-HTTP. As you know,  Microservice architecture has become very popular in recent years. This architecture fits perfect 1) When you want to give support of your application for many platforms such as web, mobile etc. 2) When your application consists of multiple services such as order service, account service, payment service etc. Continue Reading

A simple example to implement WebSocket server using Akka HTTP

This is a very simple example to implement WebSocket server using Akka HTTP. If we have the scenario to transfer real time data from and to server over a HTTP connection, we use WebSocket. Akka provides Akka HTTP library to interact with web services. Akka HTTP provides a stream-based implementation of the WebSocket protocol. In this example, you will see how easily you can create web Continue Reading

Frontend to Backend: Everything is on Scala using Play, Scala.js and ScalaCSS

In my previous post, I tried to create a pure front-end application using Scala.js and ScalaCSS. So that we can build our front-end also in a typesafe way. But there was no server interaction. This time I have tried to make server interaction using play framework. Since this application is about Weather Information System, so I am  hitting a third party api to get weather Continue Reading

A Pure Scala Front-End application using Scala.js and ScalaCSS

In my previous posts, I created an application ‘Weather Report‘, based on Scala.js and explained how to write test-case in Scala.js using same application.  Earlier I was creating html page using Scala.Js Jquery library.  But code was not very clean and well structured. I started exploring ScalaTags and ScalaCSS to make application more interactive and clean using Scala.js. ScalaTags is HTML construction library for Scala Continue Reading

How to write test-case for Scala.js application

Few months ago, I created a web application ‘Weather Report‘, based on Scala.js.  In this blog, I have explained how we can test our Scala.js application. Since I am still exploring it, so I took help from scalajs-tutorial.  I have used µTest as testing library. // uTest settings libraryDependencies += “com.lihaoyi” %%% “utest” % “0.3.0” % “test” testFrameworks += new TestFramework(“utest.runner.Framework”) Here is example of test-cases: def tests = Continue Reading

Simple steps to ease your programming life and deliver good quality software in an extreme way

Most of the programmers are struggling today with their programming life because of unbalanced working hours, increasing number of defects, late deployment etc., which impact most of the things including quality and delivery of software, personal life etc. I was reading “extreme programming explained embrace change” by Kent Beck. I found this book to be very helpful to ease our stressful programming life, to deliver Continue Reading

Why Scala.js is preferred language for front-end development

From last few years, I have been working on Scala as a back-end and Javascript as front-end for web application.  It becomes very painful, when I have to refactor a large Javascript code base, written by someone else. There are also many annoying language warts. I tried to use other front-end framework, targeting JS but wanted to use same platform to go all the way Continue Reading

MeetUp on “BlinkDB and G-OLA: Supporting Continuous Answers with Error Bars in SparkSQL”

Big datasets are growing exponentially, but our needs to get quick interactive responses to our queries remain ever as important. This talk will feature an overview of various components in BlinkDB and introduce a new generalized online aggregation (G-OLA) paradigm in SparkSQL to incrementally process massive amounts of data on clusters of tens, hundreds or thousands of machines while returning approximate answers. More precisely, this Continue Reading

MeetUp on “An Overview of Spark DataFrames with Scala”

Knoldus is organizing an one hour session on 18th Nov 2015 at 6:00 PM. Topic would be An Overview of Spark DataFrames with Scala. All of you are invited to join this session. Address:- 30/29, First Floor, Above UCO Bank, Near Rajendra Place Metro Station,  New Delhi, India Please click here for more details.

Easiest Way to connect with Couchbase using Scala

In this blog, we have explained how easily we can connect with Couchbase, store and fetch data  using scala through an example. Tools and technologies used : SBT 0.13.8 Scala 2.11.6 Couchbase Server 4.0 Beta Eclipse JDK 1.7 Please follow below instructions to use this example:- 1) Install and configure Couchbase a) Download the couchbase server from here. b)  If you are using ubuntu, then Install the Continue Reading

Easiest Way To Insert Scala Collection into PostgreSQL using Slick

Few days ago, I had a scenario, in which I had to insert scala collection into postgreSQL using Slick. My postgreSQL table has some columns with data types such as Arrays, hstore  etc.. I tried to do this using slick, but didn’t get success. After beating my head whole day, I found a solution. I found a slick extension slick-pg, which supports following postgreSQL types:- Continue Reading

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