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AWS Lambda is a fully serverless compute service that lets you run code without provisioning or managing servers. You are billed only for the time your function actually runs—unlike EC2, where you pay even when the server is idle. Lambda automatically scales, executes only when triggered, and shuts down after execution. What AWS Lambda Does Runs small pieces of code called functions written in Java, Python, Node.js, Ruby, and more. No server, OS, CPU, RAM, or patching management—AWS handles everything. Billed only per invocation and execution time. Ideal for event-driven, bursty, or low-traffic workloads. How AWS Lambda is Triggered A Lambda function does nothing until a trigger fires. Common triggers include: S3 — Run code when files are uploaded or deleted (e.g., image resizing). SQS / SNS — Process messages as they arrive. API Gateway — Build serverless REST APIs where each HTTP call invokes Lambda. EventBridge / CloudWatch — Cron jobs...

Java is one of the most powerful, versatile, and widely used programming languages in the world. From enterprise-grade web apps and Android development to embedded systems and cloud-native microservices, Java remains a developer favorite in 2025. In this post, you’ll learn: What is Java? History of Java Who owns Java today Major Java versions and their features Where Java is used in real-world development Best IDEs for Java development Popular frameworks for Java What you can build using Java 🧠 What is Java? Java is a high-level, object-oriented, class-based programming language that runs on the Java Virtual Machine (JVM) . Java is known for its Write Once, Run Anywhere philosophy — code written in Java can run on any platform that supports the JVM. Java is widely adopted for its strong memory management, security features, rich libraries, and vast ecosystem. 📜 History of Java Java was first developed in 1991 by James Gosling and his team ...