The Case of the Crashing Checkout Flows: My Strangest Debugging Story
The year was 2015, and I had just joined RedMart. I was very impressed by the importance RedMart placed on addressing customer fee
Shesh's blog
Latest posts
Swiss Cheese Model of Software Reliability
Software surrounds us. It’s in the planes we fly and the cars we drive. It handles our finances, helps us learn, and keeps us connected.
Zero-Downtime Postgres Credentials Rotation with Node.js
In enterprise environments, it’s common to store database credentials in a vault like AWS Secrets Manager. These credentials are usually
Implementing SAML SSO in Node.js with Microsoft Entra ID
Authenticate with Microsoft Entra ID (Azure Active Directory) using Node.js, Express and Passport
Refreshing OAuth Access Tokens using Axios Interceptors
HTTP Clients like Axios , <a href="https://www.pytho
FastAPI without ORM: Testing with asyncpg
In our last two posts, we explored how to set
System Design for Entity Resolution
Entity Resolution (also known as Record Linkage, Data Fusion, Deduplication etc) is the process of identifying the same real-world entiti
Demystifying Postgres Schema Migrations: Building it from Scratch
Database schema migrations are rarely taught in universities, and if you’re a self-taught developer, migrations are not something you wou
FastAPI without ORM: Getting started with asyncpg
Let’s start with a simple FastAPI example: <span class="token comment" sp
How Big Things Get Done
If you’ve been in the industry for more than a few years, you might have seen at least one big project that failed badly - maybe it went
Graph Retrieval using Postgres Recursive CTEs
Using Postgres as an alternative to graph databases for storing and retrieving graphs
Remove PDF password protection using qpdf and AppleScript
For removing password protection from PDFs, I prefer using qpdf
Killing long running queries in Postgres
Finding and terminating long running queries in Postgres
Implementing React-like Composition using Go's html/template
Compose and render frontend components using Go's standard library
What Every Programmer Should Know About Load Testing
Load testing is very important to prevent reputational or revenue loss. However, most developers struggle to write load tests. Even if th
Taurus: Writing JMeter Load Tests As Code
JMeter is one of the oldest and widely
Analyzing Slow Python Code using cProfile
Python is widely considered to be a slow language. However it’s slow only when compared to other fast languages. I’d argue it’s a perfect
Thoughts on the Future of Software Development
My optimistic take on the future of Software Development in the age of AI.
System-wide text summarization using Ollama and AppleScript
Local LLMs like Mistral, Llama etc allow us to run ChatGPT like large language models locally inside our computers. Since all the process
Entity Resolution Challenges
Entity Resolution (also known as Record Linkage, Deduplication etc) is the process of identifying the same entity (person, company, produ
Alerting: Expectation vs Reality
Let’s say you’ve a moderately complex system that your team has been working on for the past couple of years. It works well and the users
Exploring Singapore’s OneMap API
Lot of people use Google Maps on a regular basis, however when it comes to programmatic access, using Google Maps API can get quite expen
Structured JSON Logging using FastAPI
Let’s start with a simple FastAPI example: <span class="token comment" sp
Why use Azure OpenAI when you have OpenAI?
In addition to the ChatGPT application, OpenAI has also released AP
A Gentle Introduction to LLMs for Product Teams
There has been explosive growth in Generative AI and LLMs (Large Language Models) in the past few months. Not only we are seeing the laun
Detecting Clusters in Graphs using NetworkX
Clusters of all connected nodes inside a graph is commonly known as “connected components”
Generating Unique Pairs in Python
Let’s say we’ve a list of entities, this can be anything like people names, company names, etc from which we’d like to generate unique pa
Loading Amplitude Events Data into Pandas DataFrame
Amplitude allows you to export the events data from their platform using their Export API. Let’s see how we can get that exported data loaded into a Pandas dataframe.
Make your backend more reliable using Nginx caching proxy
Most of us are familiar with Nginx - it’s a very popular Web Server and Reverse Proxy. But do you know that you can also use it as a Cach
Single Page Applications using Rust
Easy to follow guide to building SPAs using Rust, WebAssembly and Yew
Beginner's guide to Error Handling in Rust
Easy to follow guide using practical examples
Clear explanation of Rust’s module system
Easy to understand explanation using visual aids and practical examples
Rust for JavaScript Developers - Pattern Matching and Enums
Part 4 covers pattern matching, destructuring, and enums
Rust for JavaScript Developers - Functions and Control Flow
Part 3 covers functions, closures, if-else, while, for..in, range and iterators
Rust for JavaScript Developers - Variables and Data Types
Rust for JavaScript Developers - Variables and Data Types
Rust for JavaScript Developers - Tooling Ecosystem Overview
Rust for JavaScript Developers - Tooling Ecosystem Overview
Automatic PageView Tracking using React Router
Automatic PageView Tracking using React Router
Publishing an npx command to npm
Publishing an npx command to npm
Running Express over HTTPS in localhost
Running Express over HTTPS in localhost
Visual explanation of SAML authentication
High level explanation of the SAML authentication protocol for beginners
Blocking usage of the any type in TypeScript codebases
Blocking usage of the any type in TypeScript codebases
How to prevent code reviews from slowing down your team
How to prevent code reviews from slowing down your team
Ways to manage config in frontend and their tradeoffs
Ways to manage config in frontend and their tradeoffs
Minimal Viable Search using Postgres
Minimal Viable Search using Postgres
Career advice for new developers
Career advice for new developers
Organizing HTTP requests using the API module pattern
Improve readability and testability by abstracting the HTTP code from the UI or business code
How we use Storybook for documentation and code reviews
How we use Storybook for documentation and code reviews
RedMart’s experience with PWA
RedMart’s experience with PWA
Packaging Node.js code into cross platform executables
Cross compile Node.js code into static binaries for easier distribution
Tips for using ESLint in a legacy codebase
Tips for using ESLint in a legacy codebase