CountDownLatch in Java: Complete Guide with Real-World Examples, ExecutorService, Interview Questions, and Best Practices
Interview questions with model answers in accordion format.
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CyclicBarrier in Java – Complete Guide with Real-World Example, Execution Flow, and Code
When building multithreaded applications in Java, it is common to divide a large task…
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ForkJoinPool in Java: Complete Guide with Examples, Work Stealing, and Real-World Use Cases
As Java applications continue to leverage multi-core processors, writing efficient concurrent code has become increasingly important.
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CompletableFuture in Java: A Complete Guide with ExecutorService, Future, CountDownLatch, and Real-World Spring Boot Examples
Modern Java applications, especially Spring Boot microservices, are expected to handle thousands of requests efficiently.
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Connection Pool in Spring Boot Explained with a Real E-commerce Example (Thread Pool vs Connection Pool)
If you're preparing for Java Backend or Spring Boot interviews for companies like Oracle,…
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Kafka Topic Retention Explained with Real-World Examples
This is actually one of Kafka's biggest strengths.
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Dead Letter Queue (DLQ) in Kafka: Complete Guide with Spring Boot Example
In event-driven microservices, communication between services is often asynchronous.
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@Transactional Vs Distributed Transaction
This is one of the most common interview questions in Spring Boot and Microservices.
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How Does @Transactional Work Internally in Spring Boot? (Complete Interview Guide with Real E-commerce Example)
If you're preparing for Java Backend interviews at companies like Oracle, Walmart, Microsoft, Amazon,…
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@PreAuthorize vs @Secured in Spring Security | What’s the Difference?
Spring Security provides multiple ways to secure methods.
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