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dpawlukiewicz | użytkownik

2 429,55
1 dzień, 43 minuty temu
5 kwietnia, 2016

What is a random number? Well, even if you have never read any definition, you can still answer that question pretty easy. It’s the unpredictable result of some action like throwing a dice. We just can’t predict what the next number will be. The Lucky shoot is all we’ve got. In a real world, randomness is kind of natural „thing”, but it starts to be more complicated when it comes to machines. Why? Simply because of their deterministic character...

Tagi: random
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Using Random on the porduction may put you in a trouble! - Forever F[r]ame

Daj się poznać 2017 7 dni, 15 godzin, 24 minuty temu dpawlukiewicz 136 rozwiń

Today’s post is going to be super easy, especially if you’re familiar with SQL, so without much explanation let’s discuss a little bit about two clauses that you might spot later in my Neo4j & Cypher series – Union and With.  UNION clause The Union clause can be used to merge the results of two queries. There are just two restrictions:the number of columns in both queries must be the samecolumn names in both queries must be the same Let’s demonstra...

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Neo4j & Cypher #3 UNION & WITH clasuse - Forever F[r]ame

Daj się poznać 2017 11 dni, 14 godzin, 33 minuty temu dpawlukiewicz 15 rozwiń

As I’ve mentioned in previous posts about Akka.NET, everything that actor knows is stored in memory. While we can skip any database or IO related bottlenecks because things in memory are generally speaking very fast, we must remember that memory is not a place where you can store your data for an extended period of time and keep it. So let’s talk about persisting it.

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Akka.NET #5: Persisting actors state – events – Hryniewski.NET

Daj się poznać 2017 14 dni, 14 godzin, 36 minut temu Rafał Hryniewski 41 rozwiń

In the previous post, we explored Neo4j dataset containing actors and movies. We also got familiar with basics of Cypher – declarative query language created for graph databases. In today’s post, we’ll find out how to create a more complex query which will consist of many relationships and nodes.  What are we going to retrieve? Let’s start with defining our task. Imagine that someone asked us to build a query which will answer the below question: I...

Tagi: cypher, neo4j, query
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Neo4j & Cypher #2 Creating complex query - Forever F[r]ame

Daj się poznać 2017 13 dni, 4 godziny, 15 minut temu dpawlukiewicz 23 rozwiń

In one of my previous post, we got familiar with the graph databases concept as the opposing approach to the aggregate-oriented, NoSQL databases. As I promised back then, there’s going to be a series of post dedicated to the query language designed for querying that kind of data structure called Cypher. Today’s one starts it and it going to present the way to install Neo4j and later is going to discuss creating simple queries.  Installing Neo4j To start our j...

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Neo4j & Cypher #1 Installation and basic query - Forever F[r]ame

Daj się poznać 2017 21 dni, 2 godziny, 56 minut temu dpawlukiewicz 36 rozwiń

Imagine the following situation: your job was to add some functionality to the application. You’ve worked on this for last couple days doing N commits. When the job is over you want to push your changes to the origin but soon after you spot that for the whole time you’ve worked on master/develop branch instead of the feature branch. Sounds familiar to you? Don’t worry, you can still move your changes!  The example Let’s say that we started a new project. We’ve ...

Tagi: git, undo changes
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Moving already commited changes to new branch using GIT - Forever F[r]ame

Daj się poznać 2017 23 dni, 21 godzin, 43 minuty temu dpawlukiewicz 51 rozwiń

Almost all my career I’ve spent with relational databases (later called RDB) and more precisely SQL Server. Honestly, I’ve never complained about that. It works fine, integrating with object languages is very quick since we’ve got a lot of different ORMs (like Entity Framework or Dapper) and it’s pretty easy to learn no matter how advanced developer you are. Sounds like a perfect solution, right? I mean, think about all the companies and projects th...

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Introduction to graph databases - Forever F[r]ame

Daj się poznać 2017 23 dni, 15 godzin, 34 minuty temu dpawlukiewicz 66 rozwiń

A few days ago I showed you how to combine Nancy with Autofac and ASP.NET Core IoC. Today’s post will be related to the security and more precisely JWT authentication. Before moving further, I’d like to mention that below text is going to be the last Nancy-related one (at least for now). In a next couple weeks, we’ll explore the world of graph databases with Neo4j and .NET Core, so I hope you’re as excited as I do 😉  How does JWT authe...

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Nancy meets JWT authentication - Forever F[r]ame

Daj się poznać 2017 35 dni, 14 godzin, 57 minut temu dpawlukiewicz 59 rozwiń

For couple last days, I worked on gifty to catch up a little bit. My primal task was to introduce JWT authentication to my microservices hosted by Nancy. That’s the topic for next post but today, I’ll describe the proper steps to fully integrate Nancy with Autofac and ASP.NET Core since it’s not that obvious (at least wasn’t for me) and took me way to much time to finally do it. So, I hope that this one will help you one way or another.  Installing pa...

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Integrating Nancy with Autofac and ASP.NET Core IoC - Forever F[r]ame

Daj się poznać 2017 39 dni, 20 godzin, 22 minuty temu dpawlukiewicz 53 rozwiń

Kilka słów o konferencji GET.NET w Łodzi + konkurs ;)

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GET.NET 2017 is coming! - Forever F[r]ame

Inne 48 dni, 14 godzin, 56 minut temu dpawlukiewicz 58 rozwiń

It’s been almost a year since I did my first public speaking (related to programming). During that, many things changed including my personal point of view on that profession. It is nothing new that the first steps are the hardest, so in this post, I’ll describe my first feelings, mistakes, and moves which started my personal journey as a speaker. Since I’m still at the beginning of my way, this post will probably evolve from time to time but even thou...

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Don't be afraid of public speaking! - Forever F[r]ame

Last week, I finally started working on my „Get noticed” project called gifty. If you have absolutely no idea what I’m writing about you can go read my introduction to the project which I link here😉 Anyway, one of the first things I wanted to do was to create some kind of ServiceBuilder for every microservice, since all of them (or at least majority) will have to go through some steps before the actually run. The steps are:Initialize Kestrel wi...

Using interface explicit imlementation for creating a builder class - Forever F[r]ame

Daj się poznać 2017 62 dni, 9 godzin, 1 minutę temu dpawlukiewicz 68 rozwiń

I’m not a big enthusiast of hard-coded values in my apps, mostly because of three things. First, it’s really annoying to change their value if necessary (especially if one is used in many places). Of course, we can use some „find and replace tool” but to be honest I don’t fully trust them. Another thing is that in many cases we have absolutely no idea what do they represent. Let’s say we have the following of code:   PaymentService.Create(or...

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How to keep settings in ASP.NET Core? - Forever F[r]ame

Daj się poznać 2017 67 dni, 21 godzin, 32 minuty temu dpawlukiewicz 49 rozwiń

Today’s post is going to shortly discuss entire architecture,  I’m going to implement in next three months. Since I’m not microservices master, some of my current decisions might be stupid or just not efficient. I so, please let me know in the comments. This would definitely help me out 😉 !  What are microservices? Let’s start with defining the microservice term. In a common approach, we design our system as one huge „being”. Of course, there mig...

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gifty - Architecture overview - Forever F[r]ame

Daj się poznać 2017 73 dni, 3 godziny, 5 minut temu dpawlukiewicz 44 rozwiń

As some of you might notice, I’ve not posted any new post since two weeks. There are few reasons for that including my vacations (finally) and other. But the most important one is the fact that I wanted to rest before huge programming competition. If you are not familiar with this even keep reading 🙂  Get Noticed One of the most recognizable Polish .NET developer – Maciej Aniserowicz – came up with really great and simple idea. Why not create some kind of competi...

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[EN] Hello Get Noticed! We meet again... - Forever F[r]ame

Daj się poznać 2017 78 dni, 14 godzin, 29 minut temu dpawlukiewicz 27 rozwiń

Yet another week, yet another code tip for you folks! Today’s post is going to be short and easy but I hope that useful at the same time (at least for the C# beginners). Let’s start!  C# logical operators One of the first things we learn when starting discovering some new programming language are operators. There are plenty of them including arithmetic operators, bitwise operators and… logical operators.  In C# two most common ones are „&&” for conjunc...

CodeTip #5 - How to avoid short-circuiting evaluation in C#? - Forever F[r]ame

Sztuka programowania 91 dni, 15 godzin, 56 minut temu dpawlukiewicz 138 rozwiń

I’ve been working as software developers since July 2014 and during that time my point of view of IT industry have changed several times. Before starting my career I had absolutely no idea about this profession but even though I loved that! Why? Simply because of my friends who talked about tons of money they were earning, lots of benefits in the office including snacks, coffee, PlayStaion, alcohol and so on. That seemed awesome! Infamously, I must admit tha...

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My "professional" hierarchy of needs - Forever F[r]ame

Inne 93 dni, 14 godzin, 52 minuty temu dpawlukiewicz 199 rozwiń

I’m a really big fan of Scott Hanselman and the way he manages his personal/work time. While watching his „soft” talk titled „Scaling Yourself” I was surprised when he described his way of answering some questions coming from all over the world (via email). He said that each of us has a limited number of keystrokes until we die so, it’s such a waste to write a dedicated email with long answer and examples in the code. Why? Because we could optimize that process and share our knowledge with other folks ou...

When to use Include() with Entity Framework? - Forever F[r]ame

Web 106 dni, 3 godziny, 59 minut temu dpawlukiewicz 150 rozwiń

This is one of those "I had to explain this couple times already so next time I want something I can redirect people to" kind of post. What I want to write about is difference in behavior between using new() and DbSet.Create() for instantiating new entities.

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[EN] Entity Framework - new() vs DbSet.Create()

Inne 112 dni, 15 godzin, 23 minuty temu tpeczek 201 rozwiń

Sometimes it happens that knowing well some tool we suddenly discover an option that seems completely „exotic” but when we sh...

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CodeTip #4 Debugging with conditions & actions in Visual Studio - Forever F[r]ame

Narzędzia 112 dni, 15 godzin, 23 minuty temu dpawlukiewicz 74 rozwiń

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