Java
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Understanding OAuth 2.0 Token Exchange
In modern software architectures, especially microservices-based systems, authentication is no longer a simple “login once, use everywhere” problem. A single…
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A Complete Guide to MFA in Spring Security 7
Multi-Factor Authentication (MFA) is a security mechanism that requires users to verify their identity using multiple authentication methods before gaining…
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Dependency Confusion Attacks in Maven: How They Work and Why Your settings.xml Makes You Vulnerable
In 2021, a security researcher breached Apple, Microsoft, PayPal, and 32 other organisations without writing a single exploit. He just…
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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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