LocalStack

🎄 Day 21: Lambda Hot Reloading in the Resource Browser. A few days ago, we mentioned Hot Reloading for Lambda Debug Mode in LocalStack v4.0. Let's continue the streak with even more great news: Lambda Hot Reloading is now available directly in the Lambda Resource Browser, enabling continuous updates and testing without the need for redeployment. This means you can iterate on your Lambda functions faster, saving precious time during development. 🎁 It's as easy as it sounds: ✏️ Make changes to your Lambda function code. 🔁 LocalStack automatically detects these updates and reloads the function in real time. ⚡️ Skip the hassle of full redeployments and focus on fine-tuning your serverless applications. Why does this matter? 🛠️ With Lambda Hot Reloading, debugging and testing become seamless. You can quickly experiment, adjust, and see the results live — all while keeping your feedback loop short and efficient. No more waiting for deployments, just instant iteration.

🎄 Day 20 of our Advent Calendar: 🔐 LocalStack v4 introduces support for deriving shared secrets using KMS, making secure communication workflows easier to test and debug locally! 🚀 🎁 What’s new? The kms:DeriveSharedSecret operation is now emulated with some cool advantages: 🔑 Key Agreements Made Simple: Emulate secure exchanges between two parties by deriving shared secrets from public and private keys. 🔒 Enhanced Security Testing: Use shared secrets to establish encrypted communication or validate data integrity locally. 🌐 Cross-Account Compatibility: Test key sharing and agreements across simulated AWS accounts with LocalStack. 💻 Why It Matters: Shared secret derivation is a cornerstone of secure application design. This new feature lets you test encryption workflows, key exchanges, and secure data transfer scenarios in an AWS-like local environment—all without incurring cloud costs.

🎄 Day 19 of our Advent Calendar: Debugging just got a serious upgrade with LocalStack v4! The new hot reloading feature for Lambda Debug Mode takes the hassle out of reconfiguring and restarting your debugging environment. 🎁 What’s new? 🔄 Dynamic Updates: The Lambda Debug Mode configuration file now supports hot reloading. Changes made to the file are detected and applied automatically—no need to restart LocalStack. 🛑 Automatic Container Stop: Once debugging is complete, the associated Lambda container stops automatically, ensuring that configurations like port adjustments can be modified without restarting. ♻️ Debug Multiple Times: Seamlessly debug the same Lambda function multiple times, enhancing iteration speed and flexibility. 💻 Why It Matters: Debugging live AWS Lambda functions is often tedious and time-consuming. This feature simplifies local debugging workflows, allowing developers to experiment with port configurations, test fixes, and iterate rapidly—all in an isolated, AWS-like environment. 🚀 You can find out more in the documentation: https://lnkd.in/dUaWSdZK

Join us for a virtual community event to explore LocalStack 4.0, our latest major release aimed toward our mission to give developers control over cloud development and help them build faster, better, and more efficiently.

🎄 Day 18 of our Advent Calendar: IAM Policy Editing Made Easy with LocalStack v4 Resource Browser! 🚀 LocalStack 4 introduces a powerful enhancement to its IAM Resource Browser—you can now edit and view IAM policies directly within the browser! 🎁 What’s new? 📝 Edit Policies Inline: Make real-time changes to IAM policies without leaving LocalStack. 👀 View Policies with Ease: Inspect existing policies for better debugging and access management. 🔒 Simplify Permissions Management: Streamline the process of defining and testing access controls locally.

🎄 Day 17: Unified Kubernetes Support in LocalStack v4! 🚀 LocalStack v4 takes Kubernetes integration to the next level! You can now run a broader range of AWS services directly in Kubernetes, expanding beyond Lambda, ECS Tasks, and EC2. 🎁 What’s new? You can now run services like: 📚 DocumentDB 🔄 MWAA (Managed Workflows for Apache Airflow) 💾 RDS (MySQL & MSSQL) 🎁 How to enable? Set the new CONTAINER_RUNTIME configuration variable to kubernetes and you’re good to go! This unified support allows you to seamlessly integrate LocalStack with your Kubernetes-based workflows, offering a consistent environment for testing and development. 💪 

⏰ Our next meetup is 24 hours away! 🚀 Join us to broadly learn about LocalStack 4.0 and our roadmap, with exciting demos around: • New Bedrock service • New Event Studio • Unified Kubernetes support • Revamped Web App UX 🔗 https://lnkd.in/giiVX6ks #LocalStack #Meetup

🎄 Day 16 of our Advent Calendar: Tagging Event Source Mappings in LocalStack v4! 🚀 LocalStack now supports tagging Event Source Mappings (ESM) for Lambda functions, making resource management and access control easier than ever! 🎁 What’s new with ESM tagging? 🏷️ Better organization: Use key-value tags to identify and manage your Lambda Event Source Mappings effortlessly. 🔒 Tag-based access controls: Streamline access management by applying policies directly to ESM resources. 🔄 Integrated workflows: Manage tags through AWS CLI, SDKs, CDK, or CloudFormation. This upgrade enhances your ability to debug, manage, and control Lambda-triggered integrations (like SQS, DynamoDB Streams, or Kinesis) in your local development environment.

🎄 Day 15 of our Advent Calendar: LocalStack v4 now features DynamoDB Local 2.0, upgrading your DynamoDB emulation experience. 🚀 🎁 Points of interest: 🛠️ Advanced emulation: Enjoy higher compatibility with the DynamoDB API while seamlessly testing your apps within LocalStack’s isolated local environment. 💻 Java-ready: Supports the jakarta.* namespace for frameworks like Spring Boot 3, Spring Framework 6, and Micronaut 4, helping you modernize cloud-native apps. 💾 Persistent testing states: Combine with LocalStack’s Cloud Pods to save your database state for iterative development and debugging.

🎄 Day 14 of our Advent Calendar: LocalStack v4 introduces a game-changing feature, Cloud Pod creation at the shutdown of Ephemeral Instances! 🚀 🎁 What’s new? At the end of an ephemeral instance, LocalStack can now create a Cloud Pod, allowing you to: 🔄 Start over exactly where you left off—perfect for iterative testing and debugging. 🐛 Quickly pinpoint and resolve exceptions/errors that caused your application to crash. 🔬 Recreate specific states to test fixes or troubleshoot edge cases effortlessly. This feature simplifies the debugging process, saves time, and keeps your development flow smooth. 💻✨