Certificates of Completion1. Developing on AWS Issued by: Trainocate Trainer: Talib Khan Course: AWS-DEV – Developing on AWS Date: 05 May 2025 – 09 May 2025 What I Learned: Hands-on with AWS SDK, DynamoDB, and S3 integration for backend applications. Built fault-tolera...Jul 25, 2025 · 1 min readsaurabhrathi.hashnode.dev
Efficient Data Retrieval in DynamoDB with GSIs and DynamoDBQueryExpressionWhy I Wrote This As I was building a Spring Boot microservice to fetch versioned data from DynamoDB, I had a simple goal: fetch relevant records fast, cleanly, and efficiently. The answer? Using DynamoDBQueryExpression with Global Secondary Indexes (...Jul 1, 2025 · 4 min readsaurabhrathi.hashnode.dev
Tracking Changes in JSON Objects: A Clean Approach to Version History DiffsWhat We're Solving Imagine you store multiple versions of a structured object (let’s say a product listing or a user profile) over time. Each time the object changes, you save a new version. Now, you want to compare every version with the one before ...Jun 13, 2025 · 4 min readsaurabhrathi.hashnode.dev