Mutation Testing With PIT in Java: The Coverage Metric You’re Ignoring That Actually Measures Test Quality

Line coverage tells you which code ran. Mutation testing tells you whether your tests would actually catch a bug. Here…

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The Lies Your Microbenchmarks Tell You: A JMH Field Guide for Backend Engineers

JMH is powerful, but deceptively easy to misuse. Here are the five pitfalls that silently corrupt your results — and…

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Understanding Spring Data AOT Repositories

Spring Boot 3 introduced several enhancements for cloud-native and native-image applications. One of the most important optimizations is AOT (Ahead-of-Time)…

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How to Import P7B into Java Keystore

In Java-based applications, SSL/TLS certificates are managed using a Java KeyStore (JKS or PKCS12). Often, certificates are provided in different…

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Dynamic Cron Scheduling in Spring Boot

In many enterprise applications, scheduled tasks are used for activities such as: sending emails, generating reports, cleaning temporary data, synchronizing…

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Serialization Is Still Java’s Biggest Attack Surface. What JEP 290 Actually Did and What It Didn’t

What JEP 290 actually did, what it genuinely left open, and how to write filters that hold up in the…

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Understanding @NamedEntityGraph in Hibernate

Hibernate provides several techniques to optimize entity fetching and reduce performance issues such as the N+1 query problem. One of…

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Fix RestTemplate Conversion Error in Spring

When working with REST APIs in Spring Boot, developers often use RestTemplate to send HTTP requests and process responses. One…

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Java Flip Bits Number Example

Bit manipulation is an important concept in Java programming, especially when dealing with low-level operations, optimization, cryptography, networking, and competitive…

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