Tag Archives: opensource

Knolders review of #venkat_50_50_tour at #DelhiJUG17 meetup


Dr. Venkat Subramaniam celebrates his 50th anniversary with distributing his smiles throughout the world’s Java User Groups (JUG) meetups, conferences, and events. Recently, he was in India and Delhi-NCR Java User Group organized one stop meetup for him. Needless to say, core to our … Continue reading

Posted in event, Functional Programming, Java, Reactive | Tagged , , , , , , , , , , , | 3 Comments

Simple Things You Can Learn From Cassandra Nodetool (Monitor/Manage) For DC/OS


Cassandra native tool called nodetool is used for monitoring and managing cassandra cluster for dcos Continue reading

Posted in Best Practices, big data, Cassandra, cluster, NoSql | Tagged , , , , , , , , , , , , , | 2 Comments

What’s new in Apache Spark 2.2


Apache recently released a newer version of Spark i.e Apache Spark2.2. The new version comes with new improvements as well as the addition of new functionalities. The major addition to this release is Structured Streaming. It has been marked as production … Continue reading

Posted in apache spark, big data, Scala, Spark, Streaming | Tagged , , , , , , , , , , | 3 Comments

Introduction to GraphQL – A Query Language for APIs


GraphQL is an API standard that provides a more efficient, powerful and flexible alternative to REST. It was created by Facebook in 2012 and was open-sourced in 2015 and is now maintained by a large community of companies and individuals from … Continue reading

Posted in Scala, Tutorial, Web, web application, Web Services, Web Standard | Tagged , , , , | 3 Comments

Scala Best Practices : Pure Functions


We grew up in a world of imperative programming that’s why we are more addictive to writing code in imperative style. Everything is mutable around us. Mutability is not that bad. But shared mutability is devil’s work. The moment we … Continue reading

Posted in Scala, Tutorial | Tagged , , , | 1 Comment

Cinnamon: Way For Monitoring & Metrics Generation for Akka ActorSystem


We are developing huge applications and deployed on multiple virtual machines and clusters. For monitoring applications, we need to enable logs into our application and analysis that logs with help of some tools like elastic stack. But !! what if … Continue reading

Posted in #telemetry, Akka, Metrics, Monitor, Scala | Tagged , , , , , , , , , , , , , | Leave a comment

Introducing Kafka Streams: Processing made easy


If you are working on huge amount of data, you might have heard about Kafka. At a very high level, Kafka is a fault tolerant, distributed publish-subscribe messaging system that is designed for fast processing of data and the ability … Continue reading

Posted in big data, Java, Streaming | Tagged , , , | 1 Comment

Installing and Running Presto


Hi Folks ! In my previous blog, I had talked about Getting Introduced with Presto. In today’s blog, I shall be talking about setting up(installing) and running presto. The basic pre-requisites for setting up Presto are: Linux or Mac OS … Continue reading

Posted in big data, database, Scala | Tagged , , , , | Leave a comment

Jmeter Load Testing:Send and Receive Email


Email notification, send email and retrieve email is a important part of any company or organisation so if you have your email server and want to know the email performance of email server then we can use the jmeter. Beauty … Continue reading

Posted in JMeter, Scala | Tagged , , , , , , , , | 2 Comments

Scala Trait and Mixin – Points to Remember


Trait can be viewed not only as interfaces in other languages, but also as classes with only parameterless constructor. Whenever there is some code in trait, the trait is called mixin. trait Alarm { def trigger(): String } In scala … Continue reading

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