Tag Archives: opensource

Exploring JEST: Java HTTP REST Client

Elasticsearch is a real-time distributed and open source full-text search and analytics engine. To integrate Elasticsearch to our application, we need to use an API. Elasticsearch gives us two ways, REST APIs, and Native clients. It’s easy to get confused … Continue reading

Posted in Elasticsearch, knoldus, NoSql, sbt, Scala | Tagged , , , , , | Leave a comment

Java High-Level REST Client – Elasticsearch

Elasticsearch is an open-source, highly scalable full-text search and analytics engine. Using this, you can easily store, search, and analyze a large amount of data in real time. Java REST client is the official client for Elasticsearch which comes in … Continue reading

Posted in database, Elasticsearch, fulltextsearch, knoldus, NoSql, sbt, Scala | Tagged , , , | 1 Comment

Back2Basics: For Expression Served From Scala Magic Box – I.

In Scala, lots of the things are kind of a magic for Java developers. Sometimes this magic amazes the code but sometimes it has ruined the developer’s life. Today we are going to discuss one of the magic called “For … Continue reading

Posted in Functional Programming, Java, Scala | Tagged , , , , , , , , , , | 2 Comments

DC/OS Installation experience on Local Cluster

Recently got the task to install DC/OS on our local cluster. Previously I used AWS to install DC/OS, but this time I had to do everything on our own, from installing CentOS to creating the DC/OS cluster. With this blog, … Continue reading

Posted in cluster, Devops, knoldus | Tagged , , , , , | 1 Comment

Developers Needs SDKMAN Not Super-Man

Every developer has pain for setup development environment to his/her machine with lots of the setups. Sometimes, the pain goes beyond while we need to test same application on multiple versions of SDKs or virtual machines. If you are a … Continue reading

Posted in apache spark, buildtools, Java, linux, sbt, Scala, Spark | Tagged , , , , , , , , , , , , , , , , , , , , | 2 Comments

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 , , , , , , , , , , , , , | 4 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 , , , , , , , , , , | 5 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 , , , , | 4 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