Design Pattern 5: What is the publish/subscribe pattern and how to use it? — This is the fifth article of a series about design patterns. Each article will focus on a single pattern, describing what it is and what problem it solves. The Problem When building systems with multiple interacting applications you typically want to avoid your applications being tightly coupled to each other. Applications are…

Design Pattern 4: What is the claim-check pattern and how to use it? — This is the fourth article of a series about design patterns. Each article will focus on a single pattern, describing what it is and what problem it solves. The Problem In message- and event-driven systems, applications are mostly communicating via asynchronous components such as message queues and topics. These messaging systems are…

Design Pattern 3: What is the request-reply pattern and how to use it? — This is the third article of a series about design patterns. Each article will focus on a single pattern, describing what it is and what problem it solves. The Problem When having an IT landscape consisting of multiple interacting applications, it being microservices or not, it is common to implement asynchronous communication…

Design Pattern 2: What is the circuit breaker pattern? How to use it? — This is the second article of a series about design patterns. Each article will focus on a single pattern, describing what it is and what problem it solves. The Problem Applications that depend on external dependencies such as other applications, databases, etc. will have more potential areas where things can go wrong…

Design Pattern 1: What is the retry pattern? How to use it? — This is the first article of a series about design patterns. Each article will focus on a single pattern, describing what it is and what problem it solves. The Problem When building applications that communicate synchronously with other applications, databases, or other infrastructure dependencies, it is likely that over a longer period…

The term vendor lock-in describes a situation where a business has become so entangled and dependent on a product or service that it’s not able to switch to another without a big economic cost. It is a common concern for companies using (or considering to use) cloud platforms to end…

The concept of cloud computing has existed for several years and its popularity seems to have exploded over the last decade. There are now a wide range of cloud computing platforms and the number of businesses migrating to the cloud seems to keep growing. The leading cloud providers offer an…