Java
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Introduction to J2CL
J2CL (Java to JavaScript Compiler) is a Google-backed compiler that enables Java source code to be transpiled into optimized JavaScript.…
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Best Practices for Storing and Validating Passwords in Java (BCrypt, Argon2, PBKDF2)
Password security is critical for any modern application. Java developers often face the question:Which algorithm should I use? In this…
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Fine-Grained Authorization with Spring Security and @PreAuthorize Annotations
Spring Security provides powerful tools to secure your Java applications—but one of its most underrated features is method-level authorization using…
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Fix Cannot Load Driver Class: com.mysql.jdbc.driver in Spring Boot
1. Introduction The “can not find driver exception” with “com.mysql.jdbc.driver" means that the Spring Boot application can not load the…
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Securing GraphQL with Spring Security: A Practical Guide
GraphQL provides a flexible and efficient way to query APIs, but with that power comes the need for robust security.…
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Getting Started with OSHI
OSHI (Operating System and Hardware Information) is a free, open-source Java library used to retrieve system information like CPU, memory,…
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Objenesis Hello World Example
In Java, object instantiation typically involves invoking a constructor using the new keyword or reflective instantiation via Constructor.newInstance(). However, these…
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Rate Limiting in Java: Implementing Per-User Throttling with Redis Buckets
To protect APIs from abuse and ensure fair usage, rate limiting is essential. It prevents users or clients from overwhelming…
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Zero Downtime Deployments with Kubernetes and Argo Rollouts
Delivering new features quickly is important, but not at the cost of application stability. In modern DevOps workflows, zero downtime…
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