Architecture

Posted on 02 April 2017

In one of my previous posts I briefly described the concept of test message. Today I wanted to explain it in more details. The need of having production system operational is self-explanatory. It is the highest priority in all businesses - be able to operate. Without any doubts regarding software quality. Users need to trust the system.

Posted on 02 March 2017

Maintaining large software systems is hard. Such systems are usually complex by nature. On diagrams they look nice - couple figures exchanging messages each other. The devil is in details - as always. Microservices add extra complexity. We moved from monoliths to farms of services. Now we can deploy changes separately - we decoupled the responsibilities (SOLID rocks!). Now we have more nodes where out messages are flowing from and to.

Posted on 15 November 2016

Communication between layers/modules/subsystems works best when API is simple and self explanatory. Pieter Hintjens wrote a great article about API design.

Posted on 27 October 2016

Quite while ago I had the opportunity to start a project using BizTalk. In one sentence BizTalk is a stable integration platform providing message persistence, mappings, orchestrations and tooling. It's of course not everything :) It has it's pros and cons, but today I will share my thoughts on how to start with BizTalk. All information are based on my own experience developing BizTalk solutions for last 2 years.

Posted on 27 September 2016

Working with MSMQ can be hard. Windows does not provide a tool to generated or edit messages on the queue. There are plenty of tools that can do that for you. Especially I like Mqueue Viewer

Posted on 18 August 2016

In daily programming activities some of use have the pleasure to use TDD approach :) Going deeper we can introduce the concept of mocks/stubs/shims. For the sake of this article let's call it mocks. Quite often we use 3rd party libs becuase they offer some functionalities we need. For example:

Posted on 24 March 2016

On Wednesday I've attended Warsaw IT Days (Warszawskie Dni Informatyki in polish). This time as a speaker :). It took me one year to jump back on stage :). I was giving a talk called "SOLID for Adults" as a part of DevTalk - Deep Dive track.

Posted on 08 February 2013

I will be shipping new iPhone game soon. It is 2 players, turn-based strategy game. Client-server architecture. More information soon ;) One question that came to my mind recently was: "How to handle app updates ?!". Right now I use simple REST with http links like: /move, /setup, etc.... The potential problem will occur when a new version will require different JSON response from "/move" link. In that situation either version 1 or 2.0 will not work... or I'll have to support both versions under the same link. This does not smell like a good solution. The image below shows the problem.