Docker in AzureAzure CLIWhat is Azure Container RegistryCreating an Azure Container Registry (ACR)What is Azure Container Instances Read More

Azure Container Instances (ACI)allows us to deploy individual containers in Azure without having to provision Virtual Machines.It is kind of a serverless computing environment where we can d… Read More

 We can create an Azure Container Registry(ACR) in different ways, using Azure CLI or Azure Portal or Powershell. In this post, we shall see how to create an Azure Container Registry us… Read More

 Azure Container Registry is like a private DockerHub in Azure. It is a managed private Docker registry service based on the open-source Docker Registry 2.0. Create and maintain Azure c… Read More

 Azure CLI (Command-line Interface) is a command-line tool for Manager azure services. It's like Angular CLI, it provides various commands to manage Azure services in an Account. Before… Read More

Docker in Visual StudioCreate Dockerfile and Container using Visual StudioUpdating Dockerfile and rebuilding images using VisualStudioCreating Executable from .Net Core ApplicationCreate Doc… Read More

 In the previous post we saw how to create an Executable (.exe file)  for a .Net Core console application. In this post we shall see how to package this .exe into a Docker image an… Read More

.Net Core applications by default will create .dll executables, in this post we shall see how to explicitly create a .exe using .Net Core, in the next post we will see how to use this .Exe a… Read More

 In the previous post we saw on how to create a .Net Core console App and use Visual Studio to automatically add Dockerfile to the project. In this post, we will see how to change the D… Read More

 Visual Studio provides an option to automatically add Docker support. Using Visual Studio we can add the Dockerfile to a project without having to manually create one. Visual Studio wi… Read More

Docker Getting StartedInstalling DockerDocker DesktopRunning first Docker ContainerPulling Docker imagesListing and Removing Docker ContainersListing and Removing Docker ImagesBuilding a Hel… Read More

 In this post we shall see how to create a basic Asp.Net core Hello World App and package it into a Docker image. We will deploy the image as a Docker container and execute the Asp.Net… Read More

 In the previous post we saw how to build a HelloWorld Docker image, in this post we will create a Docker image for a Node.js application.First let us create a basic Node server using E… Read More

 We have seen how to pull a Docker image from DockerHub and run in, now we will see how to create our own Docker image, build and run it.The first step to create a Docker image is to cr… Read More

In the previous post we saw on how to pull and run Docker Images from a remote repository. Once we pull a Docker Image, it gets stored in the local repository. We can use the image ls comman… Read More

Docker supports a set of commands to operate on Docker Containers. It supports commands to list Containers, Remove containers etc. Below are some of the commonly used commands for Docker Con… Read More

In the previous post we executed the docker run command and noticed that the Docker Engine automatically pulled the hello-world image from DockerHub. We can also use the docker pull command… Read More

Once we install Docker and make sure it is up and running we can start running our first Docker Container. Let us run the hello-world Docker container, this container is present in the Docke… Read More

 Depending on the version of Windows operating system, we need to either install the Docker Toolkit or Docker Desktop. For Windows version less than 10, we cannot install Docker Desktop… Read More

 To get started with using Docker we need to download and install the Docker setup. Docker can be installed in multiple platforms Windows / Mac / Linux. We can get the appropriate versi… Read More

Docker Overview What is Docker?Docker vs Virtual MachineWhat is a Docker Container?What is a Docker Image?What is Docker Daemon?What is Docker Registry?What is Docker Hub?What is Docker Engi… Read More

 As the name suggests Docker network allows docker containers to communicate with other containers and with the outside world. Docker supports different types of Network configuration d… Read More

 The Docker Engine is the heart of the Docker platform, it consists of 2 main parts.                The Client side (Docker CLI & Rest API) i… Read More

 Docker Hub is a service provided by Docker for finding and sharing container images. It allows us to push new images and pull existing images from the Hub. DockerHub is like GitHub we… Read More

A Docker Registry is a storage and distribution system for named Docker images. The Docker registry is used to store the static Docker image templates. The same image might have multiple dif… Read More

 The Docker Engine has a client-server setup where can client can fire commands and the Server processes the commands to create and maintain live Docker Containers.Docker Daemon is the… Read More

 A Docker Image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries, and se… Read More

When we develop an Application and move it between various environments QA, Staging, Production etc, we need to take care of various environmental factors like Operating System version, secu… Read More

A Virtual Machine is an image that runs on top of a physical server. We can create multiple Virtual Machines on top of a physical server. Each Virtual Machine needs a Guest operating system… Read More

Docker is an open platform to create, deploy and run applications by using Containers. Docker makes is easy to deploy applications from one environment to another. Containers allow a develop… Read More

Angular ElementsWhat are Angular ElementsWhat are Web Components Read More

Angular EventEmitterWhat are EventEmitters?Using EventEmitters with @Output Read More

In the previous post, we saw what EventEmittersare and how they are used in combination with @Output decorator to handle communicate from Child component to the Parent component. In this pos… Read More

Angular applications are made using Components, most often we will have to arrange the components in a hierarchy (parent/child components). We will have to pass values from the parent to chi… Read More

Angular ObservablesWhat is an Observable?What is RxJS?Observables in AngularWhat is Async Pipe?Creating observableCreating observable using Inline Arrow functionsConsuming Observable using S… Read More

Promise is eager, once they are initialized they trigger the underlying actions and returns the result Observable is lazy, they don’t trigger until it has a subscriber.Promises returns… Read More

To consume an Observable using async pipe we need to use the | async syntax in the components view template. In the previous post, we saw how to consume an Observable (response from a http A… Read More

To consume an observable by subscribing, we need to call the subscribe() method and capture the result/error objects returned by the observable. In this sample, we will get a list of users u… Read More

In the previous post we created a separate function and passed it as a parameter to create an Observable. In this post we shall see on how to create an Observable using an inline arrow funct… Read More

We can create our own Observable by creating a function that takes an observer parameter. The function will be passed to create the Observable. When someone subscribes to the observable, the… Read More

Async Pipe is an impure pipe which helps to make it easier to work with Observables. The Async Pipesubscribes to an Observable or Promise and returns the latest value it has emitted. When a… Read More

Angular internally uses Observables for different features, which needs to listen to specific sources and trigger actions based on specific events/values. Angular uses Observables for the fo… Read More

RxJS (Reactive Extensions for JavaScript) is a library for reactive programming using observables that makes it easier to compose asynchronous or callback-based code. RxJS provides an implem… Read More

The observer patternis a software design pattern in which an object, called the subject, maintains a list of its dependents, called observers, and notifies them automatically of state change… Read More

Angular ServicesWhat are Angular ServicesAngular Service ScopeAngular Provider ScopeAngular Singleton ServicesAngular Dependency Injection Read More

Dependency Injection (DI) is a pattern in which a class gets its dependent classes from an external source/framework instead of instantiating them within the class.  Dependency Injectio… Read More

A Singleton Serviceis one which has only one instance shared across the entire Angular App, it is a great way to share data across different components even if they don’t have any Hier… Read More

Redux OverviewWhat is Redux?Actions in ReduxReducers in ReduxcombineReducers in ReduxStore in ReduxmapStateToProps in ReduxmapDispatchToProps in ReduxAdding Redux to a React App Read More

Redux Thunk OverviewWhat is Redux ThunkAdding Redux Thunk Middleware to a React-Redux AppFetch async data using Redux Thunk example Read More

In the previous post we saw about setting up Redux Thunk for a React Redux application, in this post we shall see an example for fetching async data from an API call using axios and redux th… Read More

In the previous post we saw about Redux Thunk middleware and its need, in this post we shall see on how to setup the redux-thunk middleware in a React Redux application. Assuming that we hav… Read More

Redux Thunk is a middleware that lets us perform asynchronous operations like API/Ajax calls before modifying the data in a store. Middleware provides a way to interact with actions that hav… Read More

In the previous few posts we saw about Action, Reducer and Storeconcepts about Redux. In this post we shall see on how to put all of these together to add a Redux store to a React applicatio… Read More

mapDispatchToPropsfunction is used to dispatch actions to the store in a react-redux application.To dispatch an action to the store we need to call store.dispatch. In a React Redux applicati… Read More

The is a function which takes the state as an input parameter and maps the properties in the state to props mapStateToProps  in the component. mapStateToProps take the state object (the… Read More

In Redux store is the state object which holds the Application state. The current state can be accessed using store.getState()and any changes to the state can be performed by dispatching an… Read More

In the previous post, we saw about Redux reducers, how to create them, and bind it to the store when the Application gets initialized. This approach of creating and initializing a single red… Read More

React TypeScript ExamplesReact TypeScript component with State and EventsReact TypeScript Parent - Child components exampleReact TypeScript stateless Function component example Read More

In the previous post, we saw on how to create a React component with state and event handlers using TypeScript. We can also create simple function components using TypeScript which does not… Read More

In the previous post we saw a React class component written in TypeScript, the component had state support and event handling (button click event and text change event). The component has a… Read More

In the previous post we saw on how to do a simple Hello World application in React with TypeScriptusing the create-react-app package. In this post we will move on the next step we will add s… Read More

React ref overviewRefs in ReactReact ref exampleReact ref for components exampleWhat is ReactDOM.findDOMNodeReact callback ref example Read More

React Component Lifecycle methods examplesComponentDidMount examplegetDerivedStateFromProps examplecomponentWillReceiveProps exampleshouldComponentUpdate examplecomponentDidCatch example Read More

React Component Lifecycle OverviewWhat is React Component LifecycleReact Component Lifecycle MountingReact Component Lifecycle UpdatingReact Component Lifecycle UnMountingReact Component Lif… Read More

React ES6 ExamplesBasic HelloWorld example in React Basic Component example in ReactParent - Child components example in ReactFunctional stateless component example in ReactInline styles exa… Read More

React 16.3 Context, Ref & Lifecycle changesWhat's new in React 16.3Context in React 16.3createRef API in React 16.3Callback Refs in React 16.3ref Forwarding in React 16.3Component Lifecy… Read More

React 16 Fragments, Portals & Error boundariesWhat's new in React 16.0Fragments in React v16Error boundaries in React v16Portals in React v16Server Side Rendering in React v16What's new… Read More

 In Angular, a Service is a class that is used to provide shared features across different components. Components are the View layer they deal only with UI specific features. Functional… Read More

React TypeScript Environment SetupSet up React dev Environment using Webpack and TypeScriptHelloWorld example in React with TypeScriptHelloWorld create-react-app Application using TypeScript Read More

In the previous post we saw on how to setup a React Application using TypeScript and webpack, in that post we manually installed the required npm packages, created the config files and the R… Read More

In the previous post we did setup the Development environment to develop React applications using TypeScript. In this post we will use this environment and create a Hello World React applica… Read More

In the previous posts we saw on how to create React Applications using JavaScript and JSX. We can also write react applications using TypeScript. The build environment setup will be differen… Read More

In this post we shall see on how to install the create-react-app boilerplate and how to create a simple Hello World application using the boilerplate.Let us create a React application hello… Read More

React Boilerplates OverviewWhat are React BoilerplatesReact Hello World using create-react-app Read More

In the post Setting up React Environment, we saw the process to setup the environment to do a simple Hello World application in React, we know that it takes quite a bit of time and effort to… Read More

React Environment Setup and Build Tools OverviewSetting up React dev Environment using Webpack and babelReact Setup and Build ToolsWebpacknpmnpm semantic versioning npm package-lock.jsonBabl… Read More

Source Map helps us debug JavaScript code in production. Source Map creates a mapping between the original development version of the JavaScript / JSX files and the compiled and bundles prod… Read More

Babel is a JavaScript compiler which is used to transform ES6 JavaScript code to ES5 JavaScript which the browsers can understand. This transformation is called transpilation. React componen… Read More

The package-lock.json is a new file introduces in npm v 5.*. The goal of introducing this new file is to resolve issue due to installing different versions of packages.In the previous post w… Read More

NPM uses Semantic package versioning, which is a 3 part versioning like 7.5.5..Patch version – Patch versions will includes bug fixesMinor version – Minor versions will include f… Read More

NPM is the package manager for Node.js, NPM is also used to install dependent packages for client side applications like React, Angular etc. NPM takes care of installing and maintaining the… Read More

Webpack is a module bundler, its main purpose is to bundle all the dependent files into a single .js file which helps optimize the page load. Apart from bundling webpack can also be used as… Read More

In the previous post we saw how to setup the environment to develop a Hello World React App, we saw that we used a set of npm packages and tools like webpack, bable etc to setup the environm… Read More

Modern web development frameworks like Angular / React are complex and involves complex environment setup before we could write our Hello World program. Setting up the development environmen… Read More

React Fiber OverviewWhat is React FiberWhat is Reconciliation Read More

A React application comprises of various React components, the components are organized in a tree structure with a root component and other child / nested components. When the React applicat… Read More

React Fiber is a re-write of React’s core algorithm which aims in improved rendering and responsiveness of the UI. React Fiber helps in improving performance of UI intensive operations… Read More

Profiling React applications for performance was introduced in React 16.5 using a React Profiler DevToolsplugin, this works but not straightforward. To get this working we need to open the d… Read More

React 16.8 HooksHooks in React 16.8useState Hook example in React 16.8useEffect Hook example in React 16.8 Read More

In the previous post we saw an example of how to use the useState hook in a function component to maintain and update state props. In this post we will see an example on how to use the useEf… Read More

In the previous post we saw that the useState Hook is used to define state props in a function component, in this post we shall see a small example on how the useState hook works in action.I… Read More

Hooks were introduces in React 16.8, hooks let us create function components in React with state and other React features. Usually for a React component to have state it should be created as… Read More

React 16.8 Lazy, Memo and contextTypeReact.memo & React.lazy in React 16.6React.memo exampleReact.lazy with Suspense exampleWhat is Code-Splitting?Lazy loading React components Read More

Lazy loading is loading dependent modules / components dynamically, this is done to optimize the initial load time of larger React Applications which have multiple components and 3rd part li… Read More

Config settings in ASP.NET Core OverviewAsp.Net Core ConfigurationAccess configuration settings from appsetting.json in StartupAccess configuration settings from custom configuration file in… Read More

In the previous post we saw on how to access the config settingsby creating a custom class and injecting it in the startup, so that it can be used in the controllers. In this case the startu… Read More

In the previous post we saw on how to use Dependency Injectionto get the configuration options in the Controller classes. In this post we will see another way of reading the configuration se… Read More

In the previous post we saw the options to read configsetting values in Startup, in this post we shall see on how to get the config setting values in the controller. We will inject the confi… Read More

In the previous post we saw on how to read configuration settings from the appsettings.json file. While this holds good for most of the cases, there might be situations where we will need ou… Read More

We saw about the various configuration options provided by .Net Core in the previous post. In this post we shall see on how to use the configuration file option to store and retrieve key-val… Read More