The high-level design and description of a software system. Architectural design distills away details of implementations, algorithms, and data representation to concentrate on the interaction of "black box" components.
I am thorough with programming and have come across languages including BASIC, FORTRAN, COBOL, LISP, LOGO, Java, C++, C, MATLAB, Mathematica, Python, Ruby, Perl, JavaScript, Assembly and so on. I can't understand how people create programming…
A colleague of mine today committed a class called ThreadLocalFormat, which basically moved instances of Java Format classes into a thread local, since they are not thread safe and "relatively expensive" to create. I wrote a quick test and…
It seems pretty clear that "Single Responsibility Principle" does not mean "only does one thing." That's what methods are for.
public Interface CustomerCRUD
{
public void Create(Customer customer);
public Customer Read(int CustomerID);
…
Intel processors (and maybe some others) use the little endian format for storage.
I always wonder why someone would want to store the bytes in reverse order. Does this format have any advantages over the big endian format?
I am looking for a recommendation here. I am struggling with whether it is better to return NULL or an empty value from a method when the return value is not present or cannot be determined.
Take the following two methods as an examples:
string…
Dependency injection (DI) is a well known and fashionable pattern. Most of engineers know its advantages, like:
Making isolation in unit testing possible/easy
Explicitly defining dependencies of a class
Facilitating good design (single…
I've always liked the idea of having multiple inheritance supported in a language. Most often though it's intentionally forgone, and the supposed "replacement" is interfaces. Interfaces simply do not cover all the same ground multiple inheritance…
The Clean Architecture suggests to let a use case interactor call the actual implementation of the presenter (which is injected, following the DIP) to handle the response/display. However, I see people implementing this architecture, returning the…
I submitted an application I wrote to some other architects for code review. One of them almost immediately wrote me back and said "Don't use static. You can't write automated tests with static classes and methods. static is to be avoided."
I…
This is probably something everyone has to face during the development sooner or later.
You have an existing code written by someone else, and you have to extend it to work under new requirements.
Sometimes it's simple, but sometimes the modules…
For a system that consist of multiple services calling each other (e.g. Front End -> Backend -> Storage), I often heard people using terminology such as "downstream" or "upstream" services. I'm not clear which direction these mean. Data flows in…
This question concerns the C# language, but I expect it to cover other languages such as Java or TypeScript.
Microsoft recommends best practices on using asynchronous calls in .NET. Among these recommendations, let's pick two:
change the signature…
I am having a hard time looking for resources on why I should use dependency injection. Most of the resources that I see explains that it just passes an instance of an object to another instance of an object, but why? Is this just for cleaner…
One of the major issues that I have seen occur in a system with microservices is the way transactions work when they span over different services. Within our own architecture, we have been using distributed transactions to resolve this, but they…
I am planning to build a RESTfull API but there are some architectural questions that are creating some problems in my head. Adding backend business logic to clients is an option that I would like to avoid since updating multiple client platforms is…
