Testing serverless systems is hard. In this article, we will discuss some practices which work well for my project.

Implementing a SaaS as a multitenant system brings a lot of benefits. As usual, there are some tradeoffs, too. For example security becomes more complex. Let's take a look at possible approaches when implementing security in a multitenant architectrure.

What's the difference between queues and topics in AWS? It's not as obvious as it seems to be...

How to design a standalone program that produces a big amount of binary data, and what are the pitfalls of the approach?

When one-thread-access for synchronized methods is too restrictive, semaphores come to mind.

It's recommended to avoid any asynchrony within the scope of the test. Unfortunately, this is not possible everywhere.

Not everywhere could be immutable objects used to ensure thread-safe code.

A small program to generate JSON data.

Let's build a simple but powerful application package manager with Ant.

This article will show you how to implement an Ant task which consume a sequence of sub-task and call them with a parameter of the result from the execution.