Building a custom authentication flow using Amazon Cognito and MetaMask — When you build a blockchain DApp, you can use AWS services with custom logic, such as monitoring and troubleshooting your contract event logs using AWS CloudWatch. With Amazon Cognito, you can deliver temporary, limited-privilege credentials to your application to access AWS resources. In this article, we will introduce a cryptographically…

Connecting AKS Applications to Azure PostgreSQL with AAD Pod Identities — In this post, We will look at how to run a Java Spring Boot application on Azure Kubernetes Service (AKS) and connects to Azure PostgreSQL using Azure AD Pod identity. Azure Kubernetes Service (AKS) is a managed Kubernetes service that lets you quickly deploy and manage applications based on microservices. …

Using BigQuery, Airflow, and Amazon Personalize to Build a machine learning workflow — Amazon announced the availability of Amazon Managed Workflows for Apache Airflow (MWAA), a fully managed service that makes it easy to run Apache Airflow on AWS and to build data processing workflows in the cloud. Apache Airflow is an open-source tool used to programmatically author, schedule, and monitor sequences of…

Multi-cloud bulk transfer of files using AWS Data Wrangler, Amazon S3 Inventory, Amazon S3 Batch Operations, Athena, Fargate, and AzCopy — It may be a requirement of your business to move a good amount of data periodically from one public cloud to another. More specifically, you may face mandates requiring a multi-cloud solution. …

Building a Serverless Workflow using AWS Cloud Development Kit — The AWS CDK is a software development framework used to define cloud infrastructure as code and provision it through CloudFormation. The CDK integrates fully with AWS services and allows developers to use a high-level construct to define cloud infrastructure in code. In this article, we will build a CDK version…

Serverless Machine Learning on AWS Lambda with Amazon EFS — Amazon announced the general availability of AWS Lambda support for Amazon Elastic File System. Amazon EFS is a fully managed, elastic, shared file system and designed to be consumed by other AWS services. With the release of Amazon EFS for Lambda, we can now easily share data across function invocations…

Step-by-Step Guide to Building a Quick Q&A Chatbot — Amazon announced the general availability of Amazon Kendra a few weeks ago, Kendra is a highly accurate and easy to use enterprise search service powered by machine learning. In this post I will build a question and answer chatbot solution using React with Amplify, WebSocket API in AWS API Gateway…

Recently i have been facing EMR Cluster suck at provisioning issue since we start using custom encrypted AMI Image. EMR service 3 times tried to launch a new instance to run as the master node and each time the instance was terminated after timeout (~16 minutes). …

Step-by-Step Guide to Building Efficient and Scalable Document Similarity Search Engine — Amazon Elasticsearch Service recently added support for k-nearest neighbor search. It enables you to run high scale and low latency k-NN search across thousands of dimensions with the same ease as running any regular Elasticsearch query. k-NN similarity search is powered by Open Distro for Elasticsearch, an Apache 2.0-licensed …