Interview: How to Check Whether a Username Exists Among One Billion Users?

Stop using if-else statements in Java

The tale goes that there is an ancient legacy system, my colleague coded thousands of lines…

Most-Used Distributed System Design Patterns

Distributed system design patterns provide architects and developers with proven…

Keycloak Integration with Spring Security 6

As the security needs of modern web applications continue to grow, reliable identity…

Mastering Design Patterns in Java

Figure 1: Design patterns

System Design CheatSheet for Interview

Dear Readers, I am summarizing the commonly asked concepts in system design interviews…

DAY 1 — High level System Design Series: URL Shortening

How do tinyurl, linktree, and bit.ly work?

Because I Didn’t Know the Difference Between Exception and Error in Java, I Failed the Interview…

You don’t know Java Streams in-practice , Do You?

Why You Should Learn Java Streams Today

I’m a Java developer , and I recently got a code review comment that I should use Java Streams API to write a piece of code that took me 10 lines to…

25 REASONS WHY JAVA IS STILL AROUND IN 2024

“There are only two kinds of programming languages: the ones people complain about…