In this tutorial, we will see how to develop a microservice using AWS Serverless services, API Gateway, AWS Lambda and SAM (AWS Serverless Application Model) CLI. To get a running environment, I will use Docker for Windows, Java 8, Spring Tool Suite (STS), Power Shell and Postman on a Windows…

In this tutorial, we will see how easy to develop a Lambda function using AWS Serverless services, AWS Lambda and SAM (AWS Serverless Application Model) CLI. To get a running environment, I will use Docker for Windows, Java 8, Spring Tool Suite (STS) and Power Shell on a Windows 10…

Short introduction … In Public-key cryptography (a.k.a asymmetric cryptography) a pair of keys are used. Each pair consists of a public key and a private key. Public key and private key depend on each other and they are mathematically related. However, generation of the key pairs is subject to one-way…

Google’s OAuth 2.0 APIs can be used for both authentication and authorization. OAuth 2.0 implementation for authentication document describes Google’s OAuth 2.0 implementation for authentication (which conforms to the OpenID Connect specification) step by step. (ref: https://developers.google.com/identity/protocols/oauth2/openid-connect). …

In this tutorial, I will talk about Rest API response codes, when to use which response code and RFC 7807 specification when returning an error. I will use a simple REST Api which is implemented using Spring Boot. …

In this tutorial, we will see how to implement a search as you type feature using Spring Boot and Elasticseach. Elastic nodes will be created using a docker-compose.yml file. Also, a simple Angular application is added so that we can see the feature in action. To get a running environment…

In this simple tutorial, we will see how easy to run a Spring Boot microservice application and a MySQL instance in a docker container using docker-compose.yml file. To get a running environment, I will use Docker Desktop for Windows (when Docker Desktop is installed, you will have Docker Engine, Docker…

In this simple tutorial, we will see how easy to run a MySQL Server in a docker container using docker-compose.yml file. To get a running container I will use Docker Desktop for Windows (when Docker Desktop is installed, you will have Docker Engine, Docker CLI client and Docker Compose), GitBash…