linux

Apache Spark

Deep Dive into Apache Spark Transformations and Action

Reading Time: 4 minutes In our previous blog of Apache Spark, we discussed a little about what Transformations & Actions are? Now we will get deeper into the topic and will understand what actually they are & how they play a vital role to work with Apache Spark? What is Spark RDD? Spark introduces the concept of an RDD (Resilient Distributed Dataset), an immutable fault-tolerant, distributed collection of objects Continue Reading

Mystery of Linux File System

Reading Time: 5 minutes Hi people! I’m back with a new blog,  Today we’ll be discussing the Linux File System. Have you ever saw various directories in your Linux systems and wonder why even they exist. Why can’t we just have a single directory and keep everything in it? Introduction to Linux file system Linux File System is a method of organizing and storing various information in a way Continue Reading

Store Git Credentials Encrypted

Reading Time: 3 minutes Hey folks in this blog post we would be looking over how we can store our git credentials in an encrypted format over linux remote servers, let’s first quickly have a look why we want to do it and what git provide us with as options. Git credentials helpers So git provide many types of credential helpers like Store The first and most basic type Continue Reading

Running jmx2graphite as a java agent to push the JMX metrics into Graphite

Reading Time: 2 minutes In my previous blog, we discussed how to monitor a Kafka stream application using Grafana and Graphite. In this solution, we used jmx2graphite as a metrics exporter which takes the metrics from the Jolokia URL where Jolokia exposes the JMX metrics and pushes those metrics to Graphite. But, there is a problem with this solution that we need to deploy one jmx2graphite per service. So Continue Reading

OpsInit: Introduction to Systemd

Reading Time: 4 minutes Introduction Let’s talk about init processes, What are they and how they work? Init stands for initialization which implies that it is the first process that runs when we start our system. This process is the father to all the processes. There are some disadvantages due to which it has been replaced by Systemd. These disadvantages are as follows: Starts tasks serially. It waits for one Continue Reading

A Simple walk-through to set up a local Cassandra multi-node cluster

Reading Time: 5 minutes In our earlier blogs we have already gone through The basic Introduction to Cassandra and also tried to explore the Cassandra Reads and Writes. Today we will be discussing something apart from the in-depth theoretical knowledge of Cassandra. In one of our projects , we came through a basic requirement in which we needed to required a local Cassandra cluster for some kind of testing.  Continue Reading

Developers Needs SDKMAN Not Super-Man

Reading Time: 4 minutes 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 Mac user, you have the best option called brew installer. But if you are Linux user, your pain is unpredictable. We are JVM stack developers Continue Reading

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