Store Semantic Web Triples into Cassandra

November 22, 2017November 23, 2017akka-http, Cassandra, Scalaakka-http, Cassandra, RDF, Semantic Web, Triples

The semantic web is the next level of Web Searching where data is more important and it should be well defined. The semantic web is needed for making the web search more intelligent and intuitive to get the user’s requirement. You all can find some interesting point on the Semantic Web here. Triples is an atomic entity in RDF. It is composed of subject-predicate-object. It Continue Reading

Routing DSL in Akka HTTP

June 13, 2017June 8, 2018Akka, akka-http, Scala, Web ServicesAkka, Akka http server, akka-http, directives, dsl, High level server Api, http, http request, HTTP server, https, low level server api, Routes, Routing, routing dsl, Server Api

In this blog we’ll be discussing about the Routing DSl provided by Akka HTTP High level Server Side API. Akka HTTP provides a very flexible “Routing DSL” for elegantly defining RESTful web services. It picks up where the low-level API leaves off and offers much of the higher level functionality of typical web servers or frameworks, like deconstruction of URIs, content negotiation or static content serving. Continue Reading

Akka HTTP vs Other REST API Tools

June 12, 2017June 12, 2017Akka, akka-http, Play Framework, ScalaAkka, akka-http, Finch, http4s, play, scala, Scalatra, Spray

Hi Folks ! Lately there have been a lot of tools that allow us to build rest APIs like the following : Akka Http Play Scalatra http4s Finch Spray In my blog today, I will be discussing Akka Http and its counterparts(competitors) in terms of their advantages, disadvantages, performance and use cases. Let us begin comparsion of Akka-Http with Scalatra. Scalatra is a thread based,it Continue Reading

Say Hello to “Akka-Http”

June 12, 2017July 17, 2017ScalaAkka, akka-http, http, starting with akka

Hello folks, Hope you are enjoying your coding days!!! in this blog, I will explain a cool technology named Akka-Http which i have recently explored in my coding days!! Introduction The Akka HTTP implements a full server- and client-side HTTP stack on top of akka-actor and akka-stream. It’s not a web-framework but rather a more general toolkit for providing and consuming HTTP-based services. Akka.Http comes with Continue Reading

Neo4j With Scala: Rest End Points with AKKA HTTP

February 23, 2017April 7, 2017akka-http, Scala, scalatestakka-http, Neo4j, scala

Hello Folks, Welcome back again in the series of Neo4j with Scala . Let’s start our journey again. But before starting our journey here is the links for recap who join late us in the journey : Getting Started Neo4j with Scala : An Introduction Neo4j with Scala: Defining User Defined Procedures and APOC Neo4j with Scala: Migrate Data From Other Database to Neo4j Neo4j Continue Reading

Document generation of Akka-HTTP using Swagger

January 31, 2017August 8, 2018Akka, akka-http, Scala, SwaggerAkka, akka-http, scala, Swagger

Hello All, In this blog we are using Swagger to generate document of Akka-HTTP. For Swagger you can get more information from Introduction to Swagger . For Akka you can get more information from Introduction to Akka-Http You can find complete code here. build.sbt file of the project contains all dependency. SwaggerDocService.scala AkkaSwagger.Scala Get the Json in response by hitting localhost:8080/api-docs/swagger.json You can get Continue Reading

Handling HTTPS requests with Akka-HTTPS Server

January 17, 2017June 8, 2018Akka, akka-http, Scala, Security, Security Audit, Security Checklist, Security Controls, Security GuidelinesAkka, akka-http, akka-https, http, http request, HTTP server, https, HTTPS requests, keymanager, keystore, REST, scala, Server-Side HTTPS, SMTP, SOAP, ssl, ssl certificate, SSlContext, trustmanager, truststore

Hi guys, In my last blogs I explained how one can create a self-signed certificate and KeyStore in PKCS12. You can go through the previous blog, as we’ll be needing certificate and keystore for handling HTTPS requests. https://blog.knoldus.com/2016/10/18/create-a-self-signed-ssl-certificate-using-openssl/ https://blog.knoldus.com/2016/10/26/how-to-create-a-keystore-in-pkcs12-format/ Akka-HTTP provides both Server-Side and Client-Side HTTPS support. In this blog I’ll be covering the Server-Side HTTPS support. Let’s start with “why do we need server-side HTTPS support?” If we want the communication between the browser and Continue Reading

Cassandra with Spark 2.0 : Building Rest API !

October 12, 2016Akka, akka-http, Apache Spark, Cassandra, Scala, scalatest, Sparkakka-http, Cassandra, cassandra spark connector usescase, Code Samples, full example, REST, RestApi, scala, Scalability, Spark, spark 2.0, Spark SQL, starter, starter kit

In this tutorial , we will be demonstrating how to make a REST service in Spark using Akka-http as a side-kick 😉 and Cassandra as the data store. We have seen the power of Spark earlier and when it is combined with Cassandra in a right way it becomes even more powerful. Earlier we have seen how to build Rest Api on Spark and Couchbase Continue Reading

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

August 8, 2016July 18, 2018Akka, akka-http, Scala, Web ServicesAkka, akka-http, scala, Web Services Testing, websockets

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

Scala, Couchbase, Spark and Akka-http: A combinatory tutorial for starters

August 3, 2016August 3, 2016Akka, akka-http, Apache Spark, couchbase, Future, Scala, SparkAkka, akka-http, Apache Spark, connector, couchbase, scala, Spark

Couchbase and Apache Spark are best so far , for the in-memory computation. I am using akka-http because its new in the business. If you are not a big fan of akka-http and don’t think it is yet ready for production then you can take a look on this blog, which displays how to do the same task using Spray. If you are new to all Continue Reading

Akka-http Logging: Logging the Response Time of the Rest API

July 19, 2016July 20, 2016Akka, akka-http, ScalaAkka, akka-http, Akka-Http Loggin, Logging, RestApi, scala

Sometimes while developing REST API’s we want to log the response time of our REST APi for the sake of better tuning. We are going to discuss the same case here and will see how to do that in Akka-http . So sometime before while I was working on akka-http while developing a spark-akka-http-couchbase Lightbend activator template , a weird use case came in-front of Continue Reading

Upgrade your Spark REST Server with Akka HTTP & Spark 2.0

July 6, 2016August 14, 2018akka-http, Scala, Sparkakka-http, Apache Spark, scala

About an year ago, in one of our blog – Spark with Spray Starter Kit we explained about creating REST Services with Spark and Spray. But, from past one year there has not been much development on Spray which tells us that soon Spray will be out-of-phase. So, we decided to Upgrade our Spark REST Server with Akka HTTP and Spark 2.0. Akka HTTP is a suite of Continue Reading

A simple example to implement WebSocket server using Akka HTTP

June 13, 2016July 19, 2018Akka, Scala, Web ServicesAkka, akka-http, scala, Web Services Testing, websockets

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

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