Deepak Kumar

@dpktech

Generating simplified solutions for common problems

LondonJoined March 2025

About

Software engineer based in the UK with 15+ years of experience building cloud-native, microservices-based systems. Writing about Java, Spring, APIs, security, performance, and real-world software engineering.

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Deepak Kumar's blogs

DeepTechHubdeeptechhub.hashnode.dev9 posts

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Recently published

DKDeepak Kumardeeptechhub.hashnode.devMar 4 · 17 min read

Kubernetes in Practice: A Hands-On Guide Using Docker Desktop

If you've containerized applications with Docker and want to explore Kubernetes—a powerful orchestration platform that manages containers at scale - I'll walk you through its fundamentals, architectur

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DKDeepak Kumardeeptechhub.hashnode.devFeb 26 · 14 min read

Mastering Stack and Queue in Java: Concepts, Implementations, and Best Practices

Stack and Queue are two fundamental data structures that appear frequently in real-world software development and technical interviews. Although they seem simple, choosing the right implementation and

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DKDeepak Kumardeeptechhub.hashnode.devJan 11 · 6 min read

Troubleshooting Java Applications

Troubleshooting Java applications is a critical skill for backend and full‑stack developers. When systems grow complex—microservices, ORMs, async processing, containers—issues rarely come with clear error messages. Instead, you must observe, compare,...

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DKDeepak Kumardeeptechhub.hashnode.devNov 24, 2025 · 5 min read

🔥11 Most Useful Java Features From Java 21 To 25

Java has evolved rapidly in recent releases. Between Java 21 (LTS) and Java 25(LTS), several new powerful features have been added that help in writing cleaner, safer, and more expressive code. In this article, I have picked the most practical and us...

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DKDeepak Kumardeeptechhub.hashnode.devOct 5, 2025 · 8 min read

Securing Chrome Extension using Auth0 Authentication

Chrome Extensions are powerful tools that enhance our browsing experience. But when your extension needs to interact with user-specific data or private APIs, you need a robust and secure authentication system. Rolling your own auth can be risky and t...

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Deepak Kumar

About

Available for

Deepak Kumar's blogs

Recently published

Kubernetes in Practice: A Hands-On Guide Using Docker Desktop

Mastering Stack and Queue in Java: Concepts, Implementations, and Best Practices

Troubleshooting Java Applications

🔥11 Most Useful Java Features From Java 21 To 25

Securing Chrome Extension using Auth0 Authentication

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Deepak Kumar

About

Available for

Deepak Kumar's blogs

Recently published

Kubernetes in Practice: A Hands-On Guide Using Docker Desktop

Mastering Stack and Queue in Java: Concepts, Implementations, and Best Practices

Troubleshooting Java Applications

🔥11 Most Useful Java Features From Java 21 To 25

Securing Chrome Extension using Auth0 Authentication