Miroservices Patterns Series — Part 08 API Gateway Pattern API Gateway Pattern: Implementing a service that is the entry point into a microservices based application from external API clients. [1] Due to a lot of drawbacks with clients trying to access microservices directly via the Internet, it is recommended to apply the API…

Microservices Patterns Series — Part 07 In the typical microservices design, the Database per service pattern indicates that each microservice should be responsible for its own data. However, if the consumer wants to access data, which spans across multiple microservices, we should be able to find a solution for that…

What is Event Sourcing? It is a different way of structuring the business logic and persisting aggregates. — Microservices Patterns Series — Part 06 In a typical traditional persistence model, we store the “current state” of an aggregate on a relational database table. If we are to track any events that happened around the aggregate, we will basically use transaction log files to store them. However, these transactional…

Microservices Patterns Series — Part 05: Hexagonal Architecture, Domain Model Pattern, Domain Driven Design (DDD), Aggregate Pattern and more. — Building business logic/service for an enterprise application whether it is a monolithic or microservice has more similarities than differences. In both approaches, it will comprise classes such as services, entities, repositories, etc. However, you will find some distinct differences as well. …

Microservices Pattern Series — Part 04: Some insights into ACID Transactions, 2PC Pattern and finally the Saga Pattern in detail. — Objective Transaction handling is an integral part of any enterprise architecture. This allows for building proper data consistency across enterprise applications. As an Enterprise Architect, knowing how to handle transactions in a distributed architecture is essential.

Microservices Pattern Series — Part 03: A deep dive into the world of Service Discovery Patterns — Client Side and Server Side Service Discovery. — Due to the dynamic nature of a microservices application, it is difficult to invoke a service with a fixed IP address of the service. This is where the concept Service Discovery comes into the picture. This will help the client to know where the service instance is located. …

Microservices Patterns Series — Part 02 The Circuit Breaker pattern is a basic pattern used especially in microservices based architectures. The Problem When one service synchronously invokes another, there is always a possibility that the other service is unavailable or unusable. This scenario could exhaust precious resources such on the caller side…

Microservices Pattern Series — Part 01 Inter Process Communication (IPC) A process could be explained in two different ways. (1. Independent Process. 2. Cooperating Services Process). An independent service is not affected by the execution of other processes while a cooperating service could be affected by other executing processes. However, though an independent process…

An introduction to the key aspects of the Digital Identity Governance While the Digital Identity for a country is established, there are a few governance factors to be established in order to be sustainable in the long run [1]. Some of those key factors are: Implementing a Digital ID Authority…