Web server/application server/Web services

What is interpolation vs property binding in angular

WHAT IS INTERPOLATION VS PROPERTY BINDING IN ANGULAR Data binding makes the angular applications development very easy. Data binding helps to do the data synchronization between the template(view/html) and class(typescript code) There are 4 types of data binding in Angular and are following, Event binding Two way data binding Interpolation Property binding What is Interpolation? …

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What is ELK

What is ELK (Elastic search, Logstash, Kibana) ? ELK stack is a combination of 3 open-source products as below, Elasticsearch, a search and analytics engine. Logstash, that index the data to Elasticsearch. Logstash has a config file that has input,filter and output section. Config file looks like json file. Kibana, a visualization tool which provides …

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DevOps vs DevSecOps vs NetOps

What is DevOps vs DevSecOps vs NetOps ? DevOps is the practice of using set of tools, processes and practices to get good agility in software implementation to customers. It combines Dev (software development ) and Ops (information operations). DevOps shortens the development lifecycles and provides Continous Integration & Delivery. DevSecOps is when security features are …

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Jenkins job vs pipeline

What is Jenkins jobs and Jenkins pipeline ? Jenkins jobs and Jenkins pipeline are essentially same, however pipeline is more staged flow of jobs. For Jenkins pipeline, Jenkinsfile is used.What is Jenkinsfile?Jenkinsfile is a text file placed in the root project directory. The Jenkinsfile has multiple stages like build, unit test, sonar test, functional,  regression, …

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What is Apache Kafka

Whats is Apache Kafka and Linkedin’s Initial contribution? Apache Kafka was built by LinkedIn initially and then offered to Apache Foundation. Development was done using Java and Scala.Why Kafka is able to handle high volume transactions?Kafka is meant to handle high volume fractions as the way it is architectured. Message key value pairs are called …

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What is Flagger

What is Flagger and how that is used in cloud ? Flagger works are controller of the deployment workflow and helps automating the promotion of canary deployments. It utilizes the Istio’s and Prometheus metrics for analyzing application behaviors.What is Istio ?Istio is an open source service mesh that allows you to connect, monitor, secure your …

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What is docker daemon

What is Docker Daemon ? In short, docker daemon acts as a server and exposes APIs to Docker client CLI and other third parties consumers. Altogether docker architectured as a client server based implementation.Let’s also understand the basics about how docker works Docker is a platform which allows DevOps teams to package the applications and run in …

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What is Ansible roles

What is Ansible roles ? Ansible roles are used to break the Ansible playbooks into multiple files. Usually an Ansible developer may have a tendency to write large single playbooks that adds complexity and that is when Ansible roles would come into real help.Ansible molecules are used to create the ansible roles. How to install Ansible …

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How does DNS look up work for Kubernetes

How does DNS look up and DNS resolution work for Kubernetes? What is DNS?Think about olden time, we used to keep phone book to find contact numbers. DNS is like a phone book of IP address.How Does DNS resolution work Generally?DNS resolution is the process converting domain name (e.g. shalimatech.com ) to computer friendly Ip …

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What is PSScriptAnalyzer used for

What is PSScriptAnalyzer used for ? PSScriptAnalyzer is code quality scanner developed by Microsoft to scan powershell code.  PSScriptAnalyzer can be installed using below command in Powershell ISE  “Install-Module -Name PSScriptAnalyzer”PSScriptAnalyzer cmndlet to unit test powershell code below: “Invoke-ScriptAnalyzer -Path ‘path of targetted ps1 file to be scanned for code quality’