Arkadiusz Plich - tech blog

Parallel pattern

Sam Newman, in his book Monolith to microservices: Evolutionary Patterns to Transform your Monolith walking through patterns designed to separating functionality from the monolith into microservices, described the pattern which even though might be hard to use and implement but could be very helpful if you are trying to migrate very risky piece of code to new service. This pattern is called the Parallel Run pattern, and today’s post will be about it.

Strangler fig pattern

While reading Building Microservices: Designing Fine-Grained Systems a few weeks ago and Monolith to Microservices: Evolutionary Patterns To Transform Your Monolith by Sam Newman I came across an interesting pattern called Strangler fig that is designed to help exclude some system functionalities, e.g. to the new module or new app. A few simple steps can save time and stress, so I think it is worth exploring.

Transaction isolation levels in relational databases

During one of my recruitment interviews, I was asked how database transactions interact and what influence we have on this. Although I have read about transaction isolation levels in relational databases in the past, I hadn’t had the opportunity to think about this problem in production, so I didn’t initially associate this with what my interviewer was getting at. It seems to me to be a good topic to start, so let’s move on.

Hello world

Initial postThe first blog post and the first “Hello World” program in programming have symbolic meaning. Both are starting points that let you know you are on the right path. They also prove that every journey, even the longest, begins with a single step or word.