RxJS Operator – From

RxJS is filled with rich set of functions – known as operators. But its easy to get lost if you are not familiar with Functional programming. With this in mind, I started creating a series of videos on RxJS. To begin with, we start with From operator.

Change Data Capture with Apache Kafka, PostgreSQL, Kafka Connect and Debezium

I always wondered how Enterprise Systems are able to perform analytics on continuously increasing data. I have read articles which talk about Map Reduce jobs to perform bulk of data processing and later on utilize tools like Kafka, Flink etc. This enables to perform continuous data streaming and keep analytics in sync with latest changes. I admit I am still noob to all this stuff, But my curiosity doesn’t let me rest. I definitely wanted to get started somewhere. Recently I started working on a problem which needed a solution to build reliable batch system.

Journey into the world of RxJS – Observable

RxJS – in the beginning, I found it hard to understand what this library does. Just another fancy collection of functions OR someone infatuated with functional programming created this stuff. I tried to get familiar with it and soon I felt – no its not meant for me. It’s just too difficult to understand what all these functions are doing. I could see that the functions can be chained together and do something. But because I have spent too much of time in Procedural/OO world, the idea of dealing with functions and wiring them together to create meaningful stuff – Somehow I just couldn’t digest the thought. It’s true, I was an idiot to have an opinion like that.

Everything You Should Know about AWS Web Hosting

Did you consider using AWS web hosting? Admittedly, if you’re a complete beginner in web development and just want to host a simple blog, you’re probably better off with a shared hosting plan. If your aspirations are grander in scope, however, AWS could be the thing for you.

If you want to host a website on Amazon’s servers and are looking for more info, the hosting experts from the Hosting Tribunal have you covered. They have prepared a helpful infographic about AWS web hosting.

Pre-signed URL for Digital Ocean spaces

Spaces a new storage offering from Digital Ocean, is definitely cost effective and offers rich API. If you are an existing AWS S3 user, the good news is that Spaces is fully compatible with AWS S3 SDK. You can leverage most of the S3 functionality in Spaces. Digital ocean is also focused on increasing the number of regions to support Spaces. As of writing this article, there are 5 regions available.

Keycloak custom fields validation

Keycloak is without a doubt most feature rich product when it comes to Enterprise security implementation. Recently I had to add custom fields in the Keycloak signup form with a set of rules to validate the data. To my surprise, the implementation was pretty easy. Keycloak out of the box supports customization and validation of forms with the help of FormAction and FormActionFactory.

Angular interview questions – Episode I

Angular has gained a lot of popularity over the last few years. The trend in Angular Jobs is on rise, with more and more companies having vacancies for Angular UI Developer. With this article, we are starting a series of Angular Interview Questions.

Google Drive UI Integration

Integrating with Google Drive UI will give an edge to your product and ease your users’ life. Users can interact with your product right from the Drive interface. Hooks within Drive application enable 3rd party developers to integrate the proprietary product and perform actions on the document, media stored on the Drive. But there seems to be a little challenge. Though Google Drive API documentation is comprehensive, the dots are not well connected. I received an email from one of my reader who was struggling with integration. With this article, I thought of listing the steps, so the community can benefit from it.

CSS Position Absolute

Nothing has puzzled me more than a CSS position. I couldn’t figure out what CSS position means – absolute, relative, static, fixed, etc. How all of these really works? The moment I felt that I have now learned enough and started experimenting with layouts, I would fail miserably. The only way to overcome this problem was to experiment and learn as much as possible.