Mar 22 · 23 min read · Source: Techniques for Writing Thread-Safe Code Without Using Synchronized Locks 1. What thread-safe code really means without locks Thread safety is often misunderstood as merely “preventing crashes when multiple threads run.” That definition...
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Feb 4 · 6 min read · Source: Series of Questions in Backend Developer Interviews Part 3 1. Deep Copy vs Shallow Copy – What Really Happens? Developers often say “shallow copy copies reference, deep copy copies data,” but this shortcut hides the subtlety that expla...
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Feb 3 · 6 min read · Source: Series of Backend Interview Questions for Java Developers Part 2 1. What does a thread dump contain, and how do you detect deadlocks from a stack trace? A thread dump is essentially an MRI scan of the JVM’s brain taken at a specific mo...
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Dec 12, 2025 · 5 min read · Source: Techniques to Manage Global Variables in Spring Boot Without Breaking Thread-Safety 1. Introduction: Why “Global Variables” Are a Hidden Danger in Spring Boot 1.1 The Naive Way — And Why It Fails Consider this simple (but dangerou...
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Sep 5, 2025 · 4 min read · Source: Add UUIDs to Logs in Spring Boot for Better Traceability 1. Why Add UUIDs to Logs? Improved Traceability Across Systems In microservices architecture, a single user request can span multiple services. By associating a unique UUID w...
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Jul 30, 2025 · 4 min read · Source: Techniques for Configuring Executors and Guava RateLimiter for Effective Multithreaded Processing 1. Understanding Executors and Their Role in Multithreading 1.1 What is an Executor? In Java, the Executor framework provides a high...
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Jul 12, 2025 · 5 min read · Source: Reasons Why Pre-Increment and Post-Increment Operators in Java Can Make or Break Your Code 1. Understanding Increment Operators in Java 1.1 What Are Pre-Increment and Post-Increment? Increment operators in Java are shortcuts to in...
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Jul 4, 2025 · 4 min read · Source: Why the yield() Function in Java Does Not Work and How to Address It 1. What Is the yield() Function in Java? The yield() function is a static method of the Thread class. Its intended purpose is to pause the current thread, allowing ot...
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Jun 18, 2025 · 7 min read · In the last post, we were introduced to the concept of concurrency. In this post, we will look at how to get started with concurrency using Java, an object-oriented programming language. This assumes that you have some experience with Java. There are...
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May 12, 2025 · 2 min read · Process And Thread 일단 Thread라는 녀석이 정확히 뭔지부터 알고가자. 그러기 위해선 Process부터 알아야한다 Process 보조 기억 장치의 ‘프로그램’이 메모리 상으로 적재되어 실행되면 프로세스가 된다고 한다 게임하다가 강제로 끄고 싶을 때 작업 관리자 여는데 그 때 줄줄이 있는게 프로세스라고 한다 Thread 동일한 Process 내에서 실행되는 여러 작업의 단위이다 Process는 위와같이 Code...
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