In this post, I will show the comparison of the two retries — Spring Retry vs Resilience4j Retry. Usually, you can combine retry with a circuit breaker when implementing to make your application more robust. I already covered the circuit breaker demo. Also, I have updated my book Simplifying Spring Security with Okta Demo if you are interested to learn more about Spring Security.

Spring Retry vs Resilience4j Retry

Spring Retry allows applications to retry a failed operation automatically. In most cases, if your service is calling another service and another service is not responding for some reason, you can use Spring Retry to retry…

In this post, I will show how we can deploy a spring boot application on AWS ECS (Elastic Container Service). ECS is one of the amazon web services that is mainly used to run the applications. It is an alternative to use EC2 instances directly.

What is ECS?

ECS is a container orchestration service. ECS allows you to run your container. You can also easily build ECS cluster using AWS Farget. Farget removes the need to provision and manages a server. The advantage of using ECS is that you don’t have to decide which server EC2 instance to use, the service does that…

In this post, I will show how we can build user management and authentication with Okta SDK and Spring Boot.

Introduction

As part of any application, developers have to be careful how they build authentication. Despite we are using Form-Based authentication for a long time, it is not the most secure one. In this post, I plan to show Form-Based authentication where users are not necessarily authenticated by validating their encrypted password against the password stored in a database. If you want to learn more about Spring Security with different authentication flows, I recently released a book Simplifying Spring Security. …

In this post, I will show how we can use the Circuit Breaker pattern in a Spring Boot Application. When I say Circuit Breaker pattern, it is an architectural pattern. Netflix had published a library Hysterix for handling circuit breakers. As part of this post, I will show how we can use a circuit breaker pattern using the resilence4j library in a Spring Boot Application.

In other news, I recently released my book Simplifying Spring Security. If you are interested to learn about Spring Security, you can buy it here.

What is Circuit Breaker?

The concept of Circuit Breaker comes from Electrical Engineering. In…

In this post, I want to show how you can use Spring Batch. This is a step by step Spring Batch Tutorial.

In enterprise applications, batch processing is common. But with data becoming more prevalent on the internet, it has also become important how we process this data. There are multiple solutions available. Apache Storm or Apache Spark helps with processing and transforming the data in the required format. In this post, we will be looking at Spring Batch more closely.

What is Spring Batch?

Spring Batch is a lightweight framework designed to facilitate batch processing. It allows developers to create batch applications. …

Finally, the book is here. Simplifying Spring Security.

Why I wrote this book?

As part of writing my blog, I also follow few communities on Facebook. Most of these communities are related to Spring Framework and Spring Boot. There are a number of users who ask questions related to Spring Security. Hence, I wondered why not write a book about it.

Also as a developer, when I’m writing a Spring Boot application, I often use Spring Security. Accordingly, I always felt like I was using this mysterious library that solves my authentication problems. …

Finally, the book is here. Simplifying Spring Security.

Why I wrote this book?

As part of writing this blog, I also follow few communities on Facebook. Most of these communities are related to Spring Framework and Spring Boot. The number of users asks questions related to Spring Security. Hence, I wondered why not write a book about it.

Also as a developer, when I’m writing a Spring Boot application, I often use Spring Security. Accordingly, I always felt like I was using this mysterious library that solves my authentication problems. I wanted to understand the fundamentals and how Spring Security dealt with authentication and authorization.

What do I cover?

…

Introduction

In this post, I will show how we can use Spring Boot to build a simple CRUD REST application example with MongoDB. I know your first question will be what is MongoDB?

What is MongoDB?

MongoDB is a NoSQL document database. In this database, records are documents which behave a lot like JSON objects. So it is mostly key-value pair.

The key advantages of using MongoDB as a database are:

• MongoDB is a schema less document database. One collection holds different documents.
• Structure of a single object is clear.
• No complex joins
• Deep query ability.
• Easy to scale out

Here are a few…