All news with #aws lambda tag

🔧 The AWS Serverless Model Context Protocol (MCP) Server now includes specialized tools to configure and manage AWS Lambda event source mappings (ESM), combining AI assistance with ESM expertise. The new toolset—comprising the ESM guidance tool, the ESM optimization tool, and an ESM Kafka troubleshooting tool—translates high-level throughput, latency, and reliability requirements into concrete ESM configurations and generates optimized AWS SAM templates. It also validates VPC network topology for VPC-based event sources and diagnoses common ESM issues to streamline setup, tuning, and troubleshooting workflows.

🚀 AWS has increased the maximum payload size for AWS Lambda asynchronous invocations from 256 KB to 1 MB. This change lets customers deliver richer, complex events—such as LLM prompts, telemetry batches, or detailed JSON outputs—without splitting, compressing, or externalizing data. The increase is generally available in all AWS Commercial and AWS GovCloud (US) Regions and can be used via the Lambda invoke API. Billing counts 1 request for the first 256 KB and an additional request per 64 KB chunk beyond that up to 1 MB.

🧪 Amazon Kinesis Data Streams now integrates with AWS Fault Injection Service (FIS) to simulate Kinesis API errors and validate application error handling, retry logic, and monitoring. Customers can induce throttling, internal errors, service unavailable, and expired iterator exceptions—covering 500, 503, and 400 responses for GET and PUT operations—to test resilience and CloudWatch alarms. FIS experiments support templates, CI integration, and automatic stop thresholds to keep tests controlled, and are generally available in all Regions where FIS is offered, including AWS GovCloud (US).

🔐 AWS Lambda now supports code signing in AWS GovCloud (US-West and US-East) through the managed AWS Signer service. Lambda validates signatures at deployment to ensure code has not been altered and that it originates from trusted signers. Administrators can create Signing Profiles, bind allowed profiles to functions, and configure whether failed signature checks produce warnings or reject deployments. Access and permissions are controlled via IAM, and there is no additional charge to use this capability.

⚙️ AWS Step Functions now expands Distributed Map input sources and adds visibility metrics. Distributed Map can now iterate S3 objects via S3ListObjectsV2, read AWS Athena data manifests and Parquet files directly, and extract arrays from JSON stored in S3 or passed as state input. New observability metrics — Approximate Open Map Runs Count, Open Map Run Limit, and Approximate Map Runs Backlog Size — provide operational insight. These features are available in all commercial AWS Regions; enable Distributed Map mode in the Step Functions console and consult the developer guide for examples.

🚀 AWS Lambda now supports creating or updating functions using container images stored in an Amazon ECR repository in a different AWS account within GovCloud Regions. This removes the previous need to copy images into a local ECR repo and streamlines centralized image management and CI/CD workflows. Administrators must grant the Lambda resource and the Lambda service principal the necessary cross-account permissions.

🔁 This AWS blog demonstrates how to automate OIDC client secret rotation for Application Load Balancer authentication using AWS Secrets Manager, AWS Lambda, and Amazon EventBridge. The solution securely stores IdP credentials (Auth0 in the example), schedules a Lambda handler to fetch and compare tokens, and updates Secrets Manager and ALB listener rules when changes occur. It reduces manual effort, limits plaintext credential exposure, and adds monitoring via CloudWatch alarms.

🧰 AWS has added a LocalStack integration for Visual Studio Code that enables developers to test and debug serverless applications locally from the IDE. The integration connects VS Code to a LocalStack-emulated environment without manual port configuration or code changes, exposing emulated services such as AWS Lambda, Amazon SQS, Amazon API Gateway, and DynamoDB. Available through the AWS Toolkit for VS Code (v3.74.0+), a guided walkthrough installs the LocalStack CLI, creates a LocalStack profile, and lets developers switch profiles and deploy to the LocalStack environment at no additional AWS cost.