AWS Lambda Durable Execution SDK for Java

AWS Lambda Durable Execution SDK for Java GA - Today, AWS announces the general availability of the AWS Lambda Durable Execution SDK for Java, empowering Java developers to build resilient, long-running workflows using Lambda durable functions. With this SDK, developers can create multi-step applications like order processing pipelines, AI… https://lnkd.in/ecYKHFvT

🚀 Spring Boot Concept Every Java Developer Must Know: Dependency Injection 🌱 After working with Java technologies, I realized one of the most powerful Spring Boot concepts is Dependency Injection (DI). 👉 Instead of creating objects manually using new, Spring Boot manages objects for us and injects dependencies automatically. ✅ Why it is powerful? ✔️ Clean and maintainable code ✔️ Loose coupling ✔️ Easy testing ✔️ Better scalability ✔️ Professional project structure 💻 Example: @Service public class UserService {    public String getUser() {        return "User Data";    } } @RestController public class UserController {    @Autowired    private UserService userService;    @GetMapping("/user")    public String user() {        return userService.getUser();    } } 🔍 Spring automatically creates the UserService object and injects it into UserController. 🎯 Real-world Learning: In enterprise projects, Dependency Injection makes code modular and easier to manage. 💡 Strong Spring Boot developers understand concepts first, not only annotations. 📌 Question for Developers: Which Spring Boot concept helped you the most? 👇 #SpringBoot #Java #DependencyInjection #BackendDeveloper #JavaDeveloper #Programming #Coding #Microservices #Developers #LinkedInPost    

Building RESTful APIs is a core skill for every Java developer. 🔹 Design clean and scalable APIs 🔹 Develop using Spring Boot 🔹 Handle HTTP methods effectively 🔹 Ensure security and performance Mastering RESTful APIs helps create robust and production-ready applications. #Java #RESTAPI #SpringBoot #JavaDeveloper #BackendDevelopment #FullStackDeveloper #WebDevelopment #Programming #SoftwareDevelopment

Getting started with Virtual Threads (Java 21+) Virtual Threads are changing how we build scalable Java applications. With Java 21+ (and beyond), concurrency becomes much simpler. 🧠 A simple example ExecutorService executor = Executors.newVirtualThreadPerTaskExecutor(); for (int i = 0; i < 1000; i++) { executor.submit(() -> { callExternalService(); }); } 👉 Lightweight threads 👉 Massive concurrency 👉 Much simpler than traditional thread pools ⚡ Why this matters handle thousands of concurrent tasks reduce complexity in async code improve scalability in I/O-heavy applications 👉 especially useful in Spring Boot backends 🧩 Modern Java concurrency stack Virtual Threads work well with: Structured Concurrency CompletableFuture Concurrency in Java is becoming simpler, safer, and more scalable. Virtual Threads are a big step forward. 🎓 If you want to go deeper If you're exploring modern Java concurrency (Virtual Threads, structured concurrency, etc.), this course is a solid starting point: https://lnkd.in/eDVg_fpC #JavaDev #Java21 #Java25 #VirtualThreads #SpringBoot #Concurrency #Backend

Mastering Java methods, constructors, and overloading is key to writing clean, flexible code. 🚀 These fundamentals help you reuse logic, initialize objects, and handle multiple inputs efficiently. https://lnkd.in/d9uvNnJP #Java #OOP #Programming

Using GitHub Copilot to generate your Java code? Here's a full comparison, with details and advices, on the best approaches: https://lnkd.in/e48uhQDh Feedback is highly welcome!!

🚀 Java Developer Roadmap If you want to become a Java Developer, this roadmap can help you understand the learning path step-by-step. The best way to learn Java is to first build a strong foundation and then apply those concepts in real-world projects. 📌 Key Learning Stages: • Java Basics (Syntax, Variables, Data Types) • OOP Concepts • Collections Framework • Exception Handling • Multithreading • JDBC • Java 8 Features • Spring Boot & Frameworks • REST APIs & Web Development #Java #JavaDeveloper #JavaProgramming #BackendDevelopment #SoftwareDevelopment #Coding #Programmer #Developers #LearnToCode #CodingJourney #JavaCommunity #SpringBoot #Hibernate #RESTAPI #WebDevelopment #FullStackDeveloper

🚀 Containerizing Java Applications with Docker! 🚀 Today, I successfully created a Docker image for a Java Spring Boot application. Here’s a quick workflow that worked perfectly: Dockerfile Steps: 1️⃣ Use an official Java base image (openjdk:17-jdk) 2️⃣ Set the working directory (WORKDIR /app) 3️⃣ Copy pom.xml and the src/ folder into the container 4️⃣ Build the project inside Docker (mvn clean install -DskipTests) 5️⃣ Package the application as a .jar and expose the desired port 6️⃣ Define the entry point to run the Spring Boot app This approach ensures: ✅ Consistency across environments ✅ Faster deployments ✅ Easy scaling with container orchestration tools like Kubernetes 💡 Pro Tip: Always make your Docker image small and secure by using multi-stage builds and skipping unnecessary tests during build. Docker + Java = 🚀 Simplified DevOps and faster time-to-market! #Java #Docker #SpringBoot #DevOps #Microservices #CloudNative #Containerization #Kubernetes #JavaDeveloper #TechTips #SoftwareEngineering #Programming #BuildAutomation #CI_CD

AWS Lambda Cold Starts: TypeScript vs Java (What Actually Makes the Difference) There’s a common belief: TypeScript Lambdas are faster than Java. That’s only partially true. It’s not the language—it’s the build. Modern TypeScript setups use esbuild, which: - Bundles code into a single file - Removes unused dependencies (tree shaking) - Minimizes output The result is a smaller artifact and less work during initialization. In Node.js (TypeScript): - Fewer files to load - Reduced dependency resolution - Faster startup In Java, even with optimized packaging, the language still requires: - JVM startup - Class loading - Framework initialization This leads to a higher cold start by default. However, Java changes with SnapStart, which offers a pre-initialized runtime snapshot, significantly reducing cold start times and making Java much more competitive. Key takeaway: TypeScript doesn’t reduce cold starts—esbuild does. Java doesn’t lag; it pays the JVM startup cost unless optimized. Cold start performance isn’t about language choice—it’s about how much work your runtime does before your code runs.

💡 Most Java developers still think thread creation is just: new Thread().start(); But that mindset is already outdated. Java has quietly evolved… and with Virtual Threads (Project Loom), the entire concurrency model has changed 🚀 Here’s the real shift: 👉 Traditional Threads → Heavy, 1:1 OS mapping 👉 ExecutorService → Controlled, pooled execution 👉 Virtual Threads → Lightweight, scalable, millions possible 🔥 And the most powerful pattern today? 👉 Executors.newVirtualThreadPerTaskExecutor() You get: ✔ Clean architecture (task vs execution separation) ✔ Massive scalability ✔ Simple, readable code ✔ No thread pool tuning headaches 🧠 The biggest mindset change? 👉 Don’t change your business logic 👉 Just change how it executes Same Runnable. Different execution model. That’s how modern Java systems are built. 📌 I’ve broken this down with: ✔ Complete runnable examples ✔ Traditional vs Executor vs Virtual Threads ✔ Internal working (what JVM actually does) ✔ Real-world scenarios & pitfalls 👇 Read here: https://lnkd.in/e-vdH8Vc ⚠️ If you're building backend systems and not using virtual threads yet… you’re leaving serious performance on the table. #Java #VirtualThreads #ProjectLoom #Concurrency #BackendDevelopment #Multithreading