TL;DR

Download tutorial code here

Intro

So there are number of tutorials available for monitoring and alerting using Prometheus and this is another one. The reason I had to write this was the time it took me to setup and configure it locally. The resources are numerous but I couldn’t find a single step by step code tut that could share a practical code approach.

This tutorial will take you on an experiment using prometheus with Java Spring Boot framework.

This tutorial is suited for people having intermediate skills in below areas

1. Java and Spring framework
2. Maven
3. CLI/YML

THIS IS NOT A INFRA SETUP OR DEEP-DIVE TUT FOR PROMETHEUS. …

TL:DR Skip to last section for 8 lines of straightforward derivation w/o explanation

Background:

I really believe in the philosophy that what you can’t create, you can’t understand clearly. While going through Machine learning algorithms, I came across Naive Bayes classifier. It made me curious to understand the logic behind the famous formula everyone was using and how it came into existence. This article tries to share my learning experience from scratch and in simple words. I am sure there are many curious minds out there and this article will surely help them.

What is Descriptive Analysis ?

Descriptive analysis or statistics means the summary of a dataset showing the central tendency and the spread of the data using things like mean, median, standard deviation etc

I remember studying these concepts when I was in school but I never understood the use in real life until recently.

Motivation behind this exercise?

I was recently playing with some salary data to learn machine learning. I created some normally distributed data. In the end I appended two huge salaries to play around with different statistics concept.

I uploaded the data in Google sheets and to my surprise, it had an Explore feature which had…

Any claim which is not backed by data is difficult to digest. Be it any vertical or industry, it’s easy to convince yourself, your stakeholders and your team mates if your arguments are backed by data.

~Apurav Chauhan 😋

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History — Need of visualisations

There have been countless times when as an Engineering head, I was put in a situation to decide between one or the other things. And working in a dynamic industry there is a highly likely chance that a choice what seem to be best few years back might have been replaced by a new choice.

For example:

Back in…

I have been observing that the young blood these days are more interested in using a technology or framework instead of understanding how does a particular technology or framework works behind the scene? OR even stepping back to understand why was this framework built at the very first place?

As an engineering manager, I have personally seen in teams that everyone is comfortable in using a framework like Spring Framework or Spring Boot but none took an interest in asking questions like:

1. Where should we use Spring Boot or Spring Framework?
2. How is Spring Boot different from Spring Framework?
3. How…

TL;DR: The article talks about customising the UPI apps chooser on your android device via webpage/hybrid app running in a webview.

Download Demo App on playstore

Github Source code

Background

Unified Payment Interface (UPI) is gaining traction in financial domain following which developers and companies are finding ways to explore its use-cases over web. Since UPI requires to validate your mobile number, so it only works on your mobile OS and not on webpage/HTML/JS (android, iOS etc).

Companies wanting to integrate UPI in their web pages accessible via hybrid apps/ mobile webviews still can’t build user experiences around UPI because they…

In this experiment, I talk about how Augmented Reality with JS can be used to make learning more fun and interactive. The case study will discuss the design process, implementation and feedback from children in the age group 2 to 10 years.

Augmented Reality (AR) has always attracted me, and in this experiment, I try to create a practical AR application. The use-case we will cover is primary education and we will see how we can make the learning fun and interactive. We will make an app to learn alphabets in three languages primarily: Punjabi, Hindi, and English.

The Javascript…

WHY?

We believe that there is a difference between the way developers look at things VS the way a non dev looks at things.