Y Yantratmika

Engineering Blog

Deep, practical writing from the work we actually do — organized around our three practices, plus the engineering foundations and perspectives behind them.

Generative AI & Agents IoT & Embedded AWS Native Cloud Foundations & Engineering Insights & Perspectives
🤖

Generative AI & Agents

Our core practice. Taking LLMs from a working prompt to production — agentic AI, RAG, prompt engineering, and evaluation on OpenAI, Anthropic and AWS Bedrock.

15 posts
📡

IoT & Embedded

Firmware and hardware engineering — ESP32, ARM, assembly, Modbus and industrial edge — carried all the way to the cloud.

5 posts
☁️

AWS Native Cloud

Serverless-first architecture and aggressive cost optimization on native AWS — Lambda, DynamoDB, migration and well-architected resilience.

13 posts
Reduce the AWS Bills
★ Featured

Reduce the AWS Bills

2026-07-06 · 118 min read

An detailed account of how we went about reducing the AWS bill to 60%

AWS CLI: The Developer's Secret Weapon (And How to Keep It Secure)

AWS CLI: The Developer's Secret Weapon (And How to Keep It Secure)

2025-12-07 · 24 min read

AWS CLI is a powerful utility - if you can keep it secure

Amazon Redshift - What, Why, and How

Amazon Redshift - What, Why, and How

2023-02-20 · 5 min read

A detailed understanding of AWS Redshift - the core behind many data analytics solutions deployed across the globe

Elastic Beanstalk - Simplify the Cloud

Elastic Beanstalk - Simplify the Cloud

2022-10-11 · 8 min read

When simplicity is all you need, don't go for complexity. You have many options that can simplify your life

AWS Migration - The Architect's Handbook

AWS Migration - The Architect's Handbook

2021-08-09 · 14 min read

A detailed step by step guide for leading your application into the AWS cloud.

Optimize with AWS Cost Explorer

Optimize with AWS Cost Explorer

2021-03-17 · 8 min read

An introduction to using the AWS Cost explorer to understand your costs and improve the bill

AWS Cloud Front Functions

AWS Cloud Front Functions

2021-03-17 · 2 min read

An introduction to using the AWS cloudfront functions for enhancing the user experience

Asynchronous API with DynamoDB Streams

Asynchronous API with DynamoDB Streams

2021-03-17 · 4 min read

An introduction to the power of dynamodb streams - combination of resiliance and performance

On a Long Drive with AWS DeepRacer

On a Long Drive with AWS DeepRacer

2020-12-30 · 13 min read

An introduction to the fun games of AWS Deep Racer.

Data Analytics on AWS — What, Why & How

Data Analytics on AWS — What, Why & How

2020-12-08 · 15 min read

LUnderstand the core components of Data analytics in AWS

SMS OTP Authentication Using AWS Backend

SMS OTP Authentication Using AWS Backend

2020-11-25 · 12 min read

Learn how to implement SMS based OTP Authentication using AWS SNS

AWS Lambda - Enhance the functionality with Lambda Layers

AWS Lambda - Enhance the functionality with Lambda Layers

2020-11-08 · 6 min read

Learn how to develop reusable components and enhance the functionality of Lambda functions using Layers

Simple Atomic Counter with DynamoDB and API Gateway

Simple Atomic Counter with DynamoDB and API Gateway

2020-11-08 · 2 min read

A simple API for an atomic counter using DynamiDB. Not best for high speed transactions, but good for most practical purposes.

🧱

Foundations & Engineering

The supporting craft behind everything we ship — Kubernetes, Redis, microservices, resilience patterns and hard-won lessons from real outages.

10 posts
Embracing the Polygot Architecture

Embracing the Polygot Architecture

2025-12-03 · 18 min read

It is not an ambition, but the need of the hour. And it is not all that difficult anymore.

Clash of the Titans

Clash of the Titans

2025-10-30 · 9 min read

An elaborate account of the parody of errors that breaks the cloud again and again; Vikas tells us more about the how we should survive these times.

When the Titanic Sinks

When the Titanic Sinks

2025-10-25 · 13 min read

October 25, 2025 saw a terrible blow to the entire world - when US-EAST-1 got into trouble, and half the internet was down. A detailed analysis of what happened on that day, and key takeaways for us.

Microservice - (not) a Fix All Solution

Microservice - (not) a Fix All Solution

2023-02-20 · 4 min read

A recent blog post from Amazon Prime Video has caused a lot of ripples when the primary advocates of microservice architecture started speaking against it. Here is a detailed analysis of the problem

Redis Stack: The backbone for efficient MicroServices

Redis Stack: The backbone for efficient MicroServices

2023-01-04 · 16 min read

Redis is the necessary companion for any high performance system. This blog gives you a detailed overview of different components of the Redis Stack.

Redisearch

Redisearch

2022-10-20 · 10 min read

A quick introduction to Redisearch, how to configure and use it in your applications

Preventing Errors in Kubernetes

Preventing Errors in Kubernetes

2021-10-11 · 10 min read

Configuration errors in Kubernetes can be disasterous. Thankfully we have some tools that can help us out

Understanding Kubernetes

Understanding Kubernetes

2021-09-21 · 43 min read

A detailed tutorial on Kubernetes - helps you understand it from scratch

When Success is an Exception

When Success is an Exception

2021-03-17 · 8 min read

Developing applications for high resiliance requires a lot more than you thought

Transcribe Speech on your Website

Transcribe Speech on your Website

2020-11-08 · 2 min read

Transcribe speech on your website, using the webkit speech recognition

💡

Insights & Perspectives

Views on where technology, business and India's digital economy are heading.

5 posts