@krishnapro

krishna Kumar

@krishnaproKolkata, IndiaJoined January 2022

Software Developer @Asmaka ventures | DevOps | Open source

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👨‍🎓 Software Developer @Asmaka Venture | DevOps | open source | Data Engineering

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I am available for Backend development, Software development and Data Engineering roles.

krishna Kumar's blogs

Krishna Kumarkrishnakumar.hashnode.dev9 posts

SQL COALESCE vs CASE: Why COALESCE is Better for Handling NULL Values

In SQL, dealing with NULL value is a common task especially when querying large datasets with missing or incomplete data. Generally, we use CASE expression and COALESCE to handle NULL value. While both can achieve similar goals, COALESCE is typically...

Oct 19, 2024 · 2 min readkrishnakumar.hashnode.dev

System Design: Load Balancing

Load balancing is a crucial component of system design, especially for ensuring that applications can handle high traffic and remain available and responsive. Let's break it down step by step. What is a Load Balancer? Load balancing is the process of...

Aug 10, 2024 · 5 min readkrishnakumar.hashnode.dev

Scaling: Horizontal vs Vertical Scaling

What is scaling? In system Design terms, scaling is the process of increasing the system's performance and resources to handle more traffic or load without making it more complex. There are two types of scaling: Vertical Scaling (Scaling-up) Horizo...

Jul 7, 2024 · 2 min readkrishnakumar.hashnode.dev

How to Implement User Authentication and Authorization with SpringBoot and JWT

If you do a quick search on how to secure REST API in SpringBoot using JWT you will find a lot of the same results. These results contain a method that involves writing a custom filter chain and using third party library for encoding and decoding JWT...

Jun 15, 2024 · 5 min readkrishnakumar.hashnode.dev

A Beginner's Guide to ProcessBuilder in Java

Introduction ProcessBuilder is a class in Java that enables developers to start and manage operating system processes from within their Java applications. This can be useful for executing shell commands, scripts or other applications from your Java c...

Feb 4, 2023 · 4 min readkrishnakumar.hashnode.dev

krishna Kumar

About

Available for

krishna Kumar's blogs

SQL COALESCE vs CASE: Why COALESCE is Better for Handling NULL Values

System Design: Load Balancing

Scaling: Horizontal vs Vertical Scaling

How to Implement User Authentication and Authorization with SpringBoot and JWT

A Beginner's Guide to ProcessBuilder in Java

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krishna Kumar

About

Available for

krishna Kumar's blogs

SQL COALESCE vs CASE: Why COALESCE is Better for Handling NULL Values

System Design: Load Balancing

Scaling: Horizontal vs Vertical Scaling

How to Implement User Authentication and Authorization with SpringBoot and JWT

A Beginner's Guide to ProcessBuilder in Java