Monday insight: Spring Boot 4.1.0-M3 advances testing annotations and observability, like smarter auto-config in backend pipelines for faster feedback loops. Milestone: https://lnkd.in/g5D8_9mS From framework familiarity, these ease monitoring and testing. Following the 4.1 milestones? What excites you? #SpringBoot #Java #Testing #Observability #TechMilestones
Spring Boot 4.1.0-M3 Advances Testing Annotations and Observability
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Monday insight: Spring Boot 4.1.0-M3 adds refined observability attributes, making metrics and testing even smoother in backend pipelines. Milestone: https://lnkd.in/g5D8_9mS From framework familiarity, these simplify production monitoring. Following the 4.1 milestones? What excites you? #SpringBoot #Java #Observability #Testing #TechMilestones
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Monday insight: Spring Boot 4.1.0-M3 adds refined observability attributes, making metrics and testing even smoother in backend pipelines. Milestone: https://lnkd.in/g5D8_9mS From framework familiarity, these simplify production monitoring. Following the 4.1 milestones? What excites you? #SpringBoot #Java #Observability #Testing #TechMilestones
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Most people use Spring Boot. But very few understand what actually happens when the application starts While going deeper into it, a few things started making more sense How the application context is created What SpringBootApplication really triggers How the bean lifecycle actually works Why proxies are used for things like Transactional And how self invocation can silently break things It is easy to write Spring code Understanding what happens inside is different Still learning and connecting the dots What part of Spring feels confusing to you #Java #SpringBoot #BackendDevelopment #SoftwareEngineering #JavaDeveloper #SystemDesign #Placements
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REST API design is more than just mapping endpoints. Working with Spring Boot has taught me that the best APIs are the ones that feel "invisible" because they are so intuitive. Here is how I’m building that bridge: ◈ Meaningful and resource-based endpoint naming ◈ Proper use of HTTP methods (GET, POST, PUT, DELETE) ◈ Consistent request and response structure ◈ Using appropriate HTTP status codes ◈ Basic validation and clear error messages A clean API simplifies integration and saves hours of debugging down the road. Still learning, still building! 🛠️ #Java #SpringBoot #RESTAPI #BackendDevelopment #Microservices #SoftwareEngineering #CleanCode #WebDevelopment #APIDesign #SystemDesign #JavaDeveloper #TechUpdate
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🚀 Learning Exception Handling in Spring Boot Today I worked on handling exceptions in a Spring Boot application to make APIs more robust and user-friendly. What I learned: • Why exception handling is important in backend systems • Using @ExceptionHandler for handling specific exceptions • Implementing @ControllerAdvice for global exception handling • Returning meaningful error responses instead of generic server errors 💡 Key takeaway: Proper exception handling improves API reliability and provides clear feedback to clients instead of exposing internal errors. 🎯 Next step: Integrating exception handling into my existing REST APIs. Small improvements like this make a big difference in real-world applications. #SpringBoot #Java #BackendDevelopment #ExceptionHandling #Coding
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Fixing a Real Spring Boot Error (and what it taught me) While building a simple REST API, I encountered this error: ClassCastException: Product cannot be cast to Prodcut 🔍 What went wrong? I unknowingly created two different classes: Product ✅ (correct model) Prodcut ❌ (typo) Then I tried to cast one into another — which caused the application to crash. Why this error happens In Java, even a small typo creates a completely new class.So: Product ≠ Prodcut Java treats them as entirely different types, and casting between them is not allowed. #Java #SpringBoot #Debugging #BackendDevelopment #CodingJourney #SoftwareEngineering
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🚀 What happens inside Spring Framework when your application starts? From bootstrapping to dependency injection, here’s a complete step-by-step flow of how Spring works internally. Understanding this flow helps developers write better and optimized applications. #Java #SpringBoot #BackendDevelopment #SoftwareEngineering
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🚀 Day 20/100: Spring Boot From Zero to Production Topic: Custom Auto-Configuration We covered Auto-Configuration. We covered disabling it. But does it stop there? Nope. 👀 Spring Boot lets you build your own auto-configuration too. 🔧 But, How It Works? You create a @Configuration class and slap conditionals on it. Spring Boot only loads it if your conditions are met. Two most common ones: @ConditionalOnClass → Load only if a class exists on the classpath @ConditionalOnProperty → Load only if a property is set in application.properties 💡 See the code attached below. ⬇️ No DataSource on classpath? → Skipped entirely db.enabled=false? → Skipped entirely Bean already defined by user? → Your default is skipped ✅ 📌 Don't forget to register it In META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports: -> com.yourpackage.MyDataAutoConfiguration Without this, Spring Boot won't pick it up. Checkout the previous posts on Auto-Config & disabling it to better understand the sequence. See you in the next one! #Java #SpringBoot #SoftwareDevelopment #100DaysOfCode #Backend #AutoConfiguration
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Last week our Spring Boot service froze completely under load. No errors. No exceptions. Just requests piling up and users seeing blank screens. Turns out it was thread pool exhaustion — one of the most common production issues that looks nothing like what it is. I wrote a detailed breakdown of: → How we diagnosed it using thread dumps and Actuator metrics → Why adding timeouts was the immediate fix → How we properly solved it with async thread pool isolation → What to check in your own Spring Boot service right now Full article link in the comments 👇 If you are building Java microservices — this one is worth bookmarking. #Java #SpringBoot #Backend #Microservices #SoftwareEngineering #Programming #BackendDevelopment #TechBlog
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Spring Boot Bean Lifecycle — Most developers ignore this 🔥 Do you know what happens before your bean is ready? Here’s the flow 👇 1️⃣ Bean Instantiation 2️⃣ Dependency Injection 3️⃣ @PostConstruct runs 4️⃣ Bean is ready to use ✅ And before shutdown: 👉 @PreDestroy is called 💡 Why it matters: ✔ Resource initialization ✔ Cleanup logic ✔ Better control over application lifecycle ⚠️ Mistake: Putting heavy logic inside constructors ❌ 👉 Use @PostConstruct instead Understanding lifecycle = writing smarter Spring Boot apps 🚀 #SpringBoot #Java #BackendDeveloper
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