Chaos engineering made easy — Maintaining a complex distributed software architecture is not an easy job. We should be ready for the failure of one or more components and make sure the blast radius is as limited as possible. What will happen if one of the services will run out of memory or reboots? Or…

How to balance your software architecture? — The software architecture is a set of significant decisions that have been taken. Designing a good and long-living software that you would be happy to work with is a complex and hard task. Very very hard. We have to make tough trade-offs while things around are changing and breaking. How…

Quick overview of the usage of AWS SSM Parameter Store and Secret Manager — Security is one the most important features of a well-architected cloud system. Storing passwords or other confidential data directly in your application’s code can create serious security risks and makes secret management harder. Fortunately, there is a better way that can be implemented with ease using AWS. Confidential data can…

Let’s put a PHP application right into the serverless cloud — AWS Lambda and serverless approach can give a wide range of benefits. Unfortunately, Lambda does not have native support for PHP and it has not been that easy to run PHP applications here. One of the big announcements from the AWS re:Invent 2020 was the Lambda container image support. …

Let’s build a simple event-sourced chess application from scratch — Event Sourcing is a really useful concept that can help make your application more predictable, easier to maintain, and more performant. Let’s assume that we have already made the decision to use this technique in our brand new application. In the Event Sourcing, the state of a system is created…

Few tricks that can help overcome public speaking fear — Software developers are a very special species. We often tend to avoid communication and when it comes to the public we would rather hide in the darkest corner of a room. I have worked as a developer for several years without having to do many public presentations and was quite…

Decouple your application by extracting reusable business requirements — We are running a recruitment process for an internship in an IT department for a startup. We have received a number of applications but not everyone will fit a profile of a perfect candidate we want to hire. He/she should be a young student, or recent graduate and have at…

Let’s build a serverless clone of WeTransfer to share cat pictures — WeTransfer is a really great file sharing service. It’s completely free for files that weigh less than 2 GB and it stores them for seven days without registration. It also offers premium support and functionalities if needed. Let’s see how we can create a serverless clone of this cool service…

Level up the interfaces of your classes — There are concepts so simple that it is surprising they have a name. This does not mean that they are not useful. Often, the simplest concepts are the best ones for the job. A fluent interface simplifies the way we use an object’s API and promotes method chaining. …