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HARSHAD's Dev Diary

Implementing Distributed Tracing with OpenTelemetry in Java Microservices
Java, Spring Boot, AWS, Microservices

Implementing Distributed Tracing with OpenTelemetry in Java Microservices

As microservices scale in complexity, debugging issues across multiple services becomes increasingly difficult. Traditional logging falls short when tracking a request across boundaries. This is where distributed tracing plays a crucial role. In this blog, we’ll explore how to implement Read more…

By HS, 2 daysOctober 11, 2025 ago
Building Multi-Tenant Applications with Spring Boot
Java Development, Software Architecture, Backend Engineering

Building Multi-Tenant Applications with Spring Boot

As businesses scale and serve multiple customers, building multi-tenant applications becomes a core architectural need. A multi-tenant application is designed to serve more than one client (tenant), while maintaining data isolation, security, and performance efficiency. In this blog, we explore Read more…

By HS, 1 weekOctober 4, 2025 ago
REST vs GraphQL in Java: Which API Style Suits Your Backend?
Java Development, Software Architecture, Backend Engineering

REST vs GraphQL in Java: Which API Style Suits Your Backend?

APIs form the backbone of modern software systems. Whether you’re building a monolithic application or distributed microservices, choosing the right API style can significantly affect maintainability, scalability, and development velocity. Among the leading approaches are REST and GraphQL, each with Read more…

By HS, 2 weeksSeptember 27, 2025 ago
Managing Secrets and Configurations in Spring Boot Using Vault or AWS Secrets Manager
Java, Spring Boot, AWS, Microservices

Managing Secrets and Configurations in Spring Boot Using Vault or AWS Secrets Manager

In modern cloud-native applications, managing secrets such as API keys, database credentials, and configuration properties securely is critical. Hardcoding secrets or storing them in plain text config files is risky and violates best practices for security and compliance. This post Read more…

By HS, 3 weeksSeptember 20, 2025 ago
A Guide to Resilience4j in Spring Boot for Fault-Tolerant Systems
Java Development, Code Quality, Object-Oriented Programming

A Guide to Resilience4j in Spring Boot for Fault-Tolerant Systems

Modern distributed systems must be resilient in the face of network failures, service downtime, and unpredictable latencies. As microservices architecture becomes the standard, building systems that can gracefully handle such failures is not just a feature—it’s a requirement. Resilience4j, a Read more…

By HS, 4 weeksSeptember 13, 2025 ago
Building Event-Driven Architectures Using Spring Boot and Kafka
Java, Spring Boot, AWS, Microservices

Building Event-Driven Architectures Using Spring Boot and Kafka

As applications scale in complexity and volume, traditional request-response models often fall short in terms of responsiveness, decoupling, and scalability. Event-driven architecture (EDA) has emerged as a powerful paradigm to address these challenges, enabling reactive, resilient, and loosely coupled systems. Read more…

By HS, 1 monthSeptember 6, 2025 ago
Spring Boot Caching Strategies: Improving Performance with @Cacheable
Java, Spring Boot, AWS, Cloud

Spring Boot Caching Strategies: Improving Performance with @Cacheable

In modern web applications, performance plays a pivotal role in user experience and scalability. One of the most effective yet often overlooked strategies for improving performance in Spring Boot applications is caching. By avoiding repeated computations and database hits for Read more…

By HS, 1 monthAugust 30, 2025 ago
Benchmarking Java Code: Profiling and Performance Measurement Tools
Cloud Computing, Serverless, Technology Trends

Benchmarking Java Code: Profiling and Performance Measurement Tools

When developing high-performance Java applications, it’s not enough for the code to work—it must also work efficiently. Identifying performance bottlenecks, optimizing memory usage, and reducing response times are all key to delivering robust, scalable systems. This is where benchmarking and Read more…

By HS, 2 monthsAugust 23, 2025 ago
Functional Interfaces and Lambda Expressions: Mastering Java's Functional Side
Java Development, Code Quality, Object-Oriented Programming

Functional Interfaces and Lambda Expressions: Mastering Java’s Functional Side

Since the release of Java 8, the language has undergone a major shift towards functional programming. Two of the most important features that enable this transition are functional interfaces and lambda expressions. These features allow developers to write cleaner, more Read more…

By HS, 2 monthsAugust 16, 2025 ago
Working with Optional in Java: Avoiding NullPointerException the Right Way
Cloud Computing, Serverless, Technology Trends

Working with Optional in Java: Avoiding NullPointerException the Right Way

One of the most dreaded runtime errors in Java is the infamous NullPointerException (NPE). While defensive coding and null checks can help, they often lead to cluttered and error-prone code. Introduced in Java 8, Optional<T> is a powerful and expressive Read more…

By HS, 2 monthsAugust 9, 2025 ago

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