@devanshv18

Devansh Verma

@devanshv18Bangalore, IndiaJoined April 2026

I write blogs on Java, Spring boot, Backend development and System in a way that can prepare you for interviews.

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Devansh Verma's blogs

Backend Blueprintsbackendblueprints.hashnode.dev2 posts

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DVDevansh Vermabackendblueprints.hashnode.devJul 18 · 12 min read

Why is it a tough ask to Scale a SQL Database Horizontally especially for Writes

Part 1: The Comfort of Vertical Scaling Picture this. You've built an e-commerce backend on PostgreSQL. Everything is on a single server — one instance, one disk, one brain making all the decisions. F

DVDevansh Vermabackendblueprints.hashnode.devJul 13 · 7 min read

How consistent hashing works and helps in rebalancing shards in a SQL DB.

The problem consistent hashing solves Say you shard your users table across 4 database nodes /shards using a hash function -> hash(user_id) % 4. This works fine — until you add a 5th node. Now % 4 bec

Devansh Verma

About

Available for

Devansh Verma's blogs

Recently published

Why is it a tough ask to Scale a SQL Database Horizontally especially for Writes

How consistent hashing works and helps in rebalancing shards in a SQL DB.

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Devansh Verma

About

Available for

Devansh Verma's blogs

Recently published

Why is it a tough ask to Scale a SQL Database Horizontally especially for Writes

How consistent hashing works and helps in rebalancing shards in a SQL DB.