Monday, January 16, 2023

API mock servers from OpenAPI specs

›
 If you have an OpenAPI specs file (YAML or JSON), then you can quickly create a mock server using one of the following tools.  Microrocks: ...
Saturday, November 19, 2022

Ruminating on the internals of K8

›
Today Kubernetes has become the defacto standard to deploy applications. To understand what happens behind the scenes when you fire "ku...
Wednesday, September 07, 2022

Ruminating on Hypothesis testing

›
The following two articles by Rebecca Bevans are an excellent introduction to the concept of Hypothesis testing and the types of statistic...

Free Stats & Finance courses

›
The following site has an excellent collection of 20 free courses that I would highly recommend for folks who want to learn the basics of f...

Continuous, Discreet and Categorical variables

›
The following websites gives an excellent overview for beginners of the 3 different types of variables that we encounter in feature engineer...
Wednesday, August 31, 2022

Ruminating on TMForum

›
The TM Forum ( TMF ) is an organisation of over 850 telecom firms working together to drive digital innovation. They created a standard know...
Monday, August 29, 2022

mAP (mean Average Precision) and IoU (Intersection over Union) for Object Detection

›
mAP (mean Average Precision) is a common metric used for evaluating the accuracy of object detection models. The mAP computes a score by com...
Thursday, August 25, 2022

Ruminating on Bloom's Taxonomy

›
I was trying to help my kids understand the importance of deeply understanding a concept, instead of just remembering facts.  I found the kn...
Thursday, August 11, 2022

Handling Distributed Transactions in a microservices environment

›
 In a distributed microservices environment, we do not have complex 2-phase commit transaction managers.   We need a simpler approach and we...
Wednesday, August 10, 2022

API contract first design

›
 I have always been a great fan of the 'Contract-First' API design paradigm. The Swagger (OpenAPI) toolset makes it very simple to d...
Wednesday, July 20, 2022

Ruminating on Data Lakehouse

›
 In my previous blog posts, we had discussed about Data Lakes and Snowflake architecture .  Since Snowflake combines the abilities of a tra...
Saturday, June 11, 2022

ServiceNow Gekkobrain & Celonis for SAP S4 HANA modernization

›
One of the fundamental challenges in migrating SAP ECC to S/4 HANA is the lack of knowledge on the plethora of customizations done on legacy...
Wednesday, June 08, 2022

Ruminating on software defined cloud interconnect (SDCI)

›
When we connect on-prem applications to cloud services, we have two options - a) Connect to the cloud service provider through the internet ...
Wednesday, June 01, 2022

Ruminating on Data Gravity

›
Data Gravity is a concept that states that as more and more data gets accumulated (analogy of mass increasing), there would be greater attra...
Monday, May 30, 2022

Hash Length of SHA 265

›
It is important to note that any hash algorithm always returns a hash of fixed length.  SHA256 returns a hash value that is 256 bits - i.e. ...
Sunday, May 29, 2022

Does Bitcoin encrypt transactions?

›
 * It is important to note that the core bitcoin network/ledger does not use any encryption. It is all hashing as explained here -  https://...

Ruminating on Elliptic Curve Cryptography

›
When it comes to symmetric encryption, the most common standards are Data Encryption Standards (DES) and Advanced Encryption Standards (AES)...

Ruminating on Proof of Work

›
While I understood how bitcoin mining worked, there were still a few strings loose in my mind on why exactly was the 'Proof-of-Work'...

Numeric value of a hash

›
In the bitcoin network, miners have to compare the hash value during the 'Proof-of-Work' process. The target hash value is stored in...
Thursday, May 26, 2022

Ruminating on dedicated instance vs. dedicated host

›
 Many folks get confused between the AWS terminology of 'Dedicated Instance' vs 'Dedicated Host'. A simple way to understand...
Tuesday, May 17, 2022

Cloud Native Banking Platform - Temenos

›
Temenos is the world's number one core banking platform. It is built entirely on the AWS cloud and uses all managed services.  I was stu...
Sunday, March 27, 2022

Difference between Epoch, Batch and Iterations

›
In neural nets, we have to specify the number of epochs while we train the model.  One Epoch is defined as the complete forward & backwa...
Saturday, March 26, 2022

Ruminating on Convolutional Neural Networks

›
Convolutional Neural Nets (CNNs) have made Computer Vision a reality. But to understand CNNs, we need to get basics right - What exactly is ...
Friday, March 25, 2022

Ruminating on Activation Function

›
 Activation functions play an important role in neural nets. An activation function transforms the weighted sum of the input into an output ...

Ruminating on Gradient Descent

›
Gradient Descent is the most popular optimization algorithm used to train machine learning models - by minimizing the cost function. In deep...

Ruminating on 'Fitting the line to data'

›
 In linear regression, we need to find the best fit line over a set of points (data). StatQuest has an excellent video explaining how we fit...
Wednesday, March 23, 2022

Ruminating on CUDA and TPU

›
  CUDA  is a parallel computing platform (or a programming model - available as an API) that was developed by Nvidia to enable developers le...
Tuesday, March 22, 2022

Understanding what is a Tensor?

›
Found this excellent video on YouTube by Prof. Daniel Fleisch that explains tensors in a very simple and engaging way -  https://youtu.be/f5...
Wednesday, March 09, 2022

Topic Modeling vs. Topic Classification

›
Topic Modeling is an unsupervised method of infering "topics" or classification tags within a cluster of documents. Whereas topic ...

Ruminating on the log scale

›
Today, I was trying to explain my colleague on the usecases where a log scale could be more useful than a linear scale and I found this wond...