The problem comes from the following story: You have an application that stores incoming data in a database. However someday you have noticed that your database schema is not quite well-designed or there was a problem with your computation all the time which you have just noticed. So how exactly you can migrate your existing data to your new database schema or calculate something with your fixed computation logic?

The answer is replaying the logs. What I would sug logic gest is, for every user action that affects your database, you should have a separate “log table” or “log file” which you can parse and replay very easily. It can help you to migrate our database or recover from serious application logic mistakes. I would call this an architectural pattern.

Let’s see how it may be helpful in a few cases: Read More →

I’ve been passionate to computers and Internet since when I was a child. Okay, this post will be about lots of cliche words. This year was a notable one in my life. I earned my first money from this “computer” thing, after starting coding for twelve years. (such a touching moment!) I met hundreds of good, brilliant and friendly people on the Internet. Almost all of my friends are from this developer, social media network around me. Read More →

Microsoft ABD’de hem staj hem de full-time başvuru, mülakat süreci ve iş fırsatları üzerine orada tanıştığım bir full-time çalışan arkadaşım olan Yenel ile Türkçe bir blog hazırladık. Umarım staja ve full-time’a başvurmak isteyenler için faydalı olur: msftturk.wordpress.com This is my blog post after **How is it like to work at Windows Azure?  **During my internship at Microsoft, I learned, enjoyed, experienced and met new people a lot. For tl;dr guys; I don’t want to advertise Microsoft but I will be talking about what’s good and bad about working for Microsoft.

Is Microsoft evil?

I don’t know. I was such a open source and free software fanboy but I’m only a lover now. If you have a similar mind, probably your perception is telling you Microsoft is a bad and such an old-fashioned copycat company; Google and Apple is so cool. Yes they’re cool, I agree, I’m an Android and MacBook user. I develop free software. However, the point is, this is just a “company”.

I was also missing this point when I came here. Companies hire people and try to make money, that simple! 90% of the time, rest of the discussions are because of fanaticism.

If you’re looking for a real answer, let me tell you a recent news. You remember that Linux 3.0 kernel has just released and top contributor of 3.0 is a Microsoft employee and Microsoft is ranked 5th active Linux kernel developer company, and there are lots of similar stories you can hear about Microsoft’s open source contribution. Read More →

Aşağıdaki metin Jared C. tarafından yazılmış bir blog yazısıdır. Bilgisayar Mühendisleri için Problem Çözme Yöntemi yazıma ek olarak bunu çevirme isteği duydum (aslında bu ikisi oldukça benzer yazılar), gerekli gördüğüm yerleri sadeleştirdim ve bir şeyler de ekledim, umarım faydalı olur. Eğer kodlamayı öğrenmek ve bir şeyler ortaya çıkarmak istiyorsanız ve başkasına ne yapmanız gerektiğini soruyorsanız zaten yanlış düşünüyorsunuz demektir. Hemen şimdi, hiçbir hazırlığa gerek duymadan, göz açıp kapayıncaya kadar bu sorunuza bir cevaba ihtiyacınız olmadığını fark ederek hedefinize büyükçe bir adımla yaklaşabilirsiniz. Çünkü her şeyi kendiniz yapabilirsiniz. İhtiyacınız olan her şey bir yerlerde sizi bekliyor. Gidin alın, kimse sizi durduramaz. Hazır mısınız?

Read More →

During my internship at Microsoft, I decided to create a Windows Phone 7 app in my spare times. The reasons I started this were to get familiar with C#, Silverlight and getting the idea behind Windows Phone 7 SDK, how it is designed and Microsoft’s approach to developing mobile apps from developers’ point of view. With this app I’m participating to #WPAppItUp contest organized by Windows Phone Team for students.

The ironic point is Windows Phone 7 is NOT being sold in Turkey. The first time I have seen WP7 is when I came to Microsoft, because as you may guess, considerable amount of MS employees use WP7. Sadly, a student has no chance to develop apps for WP7 except using the emulator. This is terrible and still many students participate to contests like Imagine Cup with WP7 apps.

So, my app is: Colorify

With Colorify you can choose or take pictures and then we make them black & white  for you and the you click on the screen to recolor specific parts of the image and then share it on your Facebook wall and Twitter. Similar apps exists on both Android and iPhone marketplaces, and that’s my first paid app, I’m selling it for $0.99 on Windows Phone Marketplace. There are a few screenshots below, you can find more on Marketplace page. Thanks to _Yenel _for mentoring during development of the app.

[Download Colorify from Windows Phone Marketplace]

Here’s a screencast of the app, thanks to Asli: Read More →

Finally, I decided to write a series of short blog posts about my internship at Redmond this summer, like I did last year. So this post will be covering only Windows Azure-specific topics. I hope you’ll get an idea about the company and may want to apply for jobs there.

What is Windows Azure? (boring part)

Good question. Formal definition: Windows Azure is Microsoft’s PaaS/IaaS cloud computing platform offering that is used to build and host scalable applications, databases and storages on Microsoft datacenters. It has SQL Azure, Azure Storage Service and AppFabric. Windows Azure is the Operating System (OS) for this system. The whole thing is called “Azure Services”.

Informal definition: It is like Google App Engine, but you’re deploying ASP.NET applications instead of Java, but you can access to your instance like Amazon EC2, it also has storage service offering like Amazon S3, but it is better and it also has a cloud relational-database like Amazon RDS. That means when you create an app, you can run it on 20 machines immediately. Everything is on the cloud, you have really less operations and migration costs. Read More →

[caption id="" align=“alignright” width=“240” caption=“How a Facebook hackathon looks like”][/caption]

I have always been so jealous of cool tech companies and startups (e.g. Facebook) that organize events in which many coders sit together and code their project ideas for all-day long or so– usually called hackathon.

Hack at Microsoft

First you might think that Microsoft is a juggernaut company but usually that is not the case. Microsoft is a company full of hacker-spirited coders (maybe not as much as Facebook or Google) and there are many Microsoft employees do side projects in their spare times and sometimes they open-source these. In fact, Microsoft even has an internal group called The Garage organization that has “thousands” of members and organizes many social coding events that project ideas can find contributors and new projects are incubated there. It is not always coders but marketing and program manager guys are also interested in contributing these projects with their skills in their fields.

This year I’m organizing an intern hackathon day which is going to be held at Microsoft campus starting 10pm today and will end tomorrow (Saturday) 10pm (24 hours!) with the help of The Garage. Read More →

I’m a 21 year old person and I really don’t know anything about how to design an API. In my internship last year, I was asked to prepare a presentation on How to Design Social APIs (in Turkish). Today, I look at that presentation and laugh very loudly, indeed. :) Unfortunately, some of my points were just too preconceived and mainstream. Since that, I learned a few things more on this topic and maybe now I can prepare another presentation, but I won’t, because next year I’ll notice that how lame is that presentation, again.

Instead, I will show how not to manage a API design process for a social network, with a real life example of a multi-million dollar project.

Step 1. Be late, no hurries

Take your time and release API at least 1 year after you launch the social network. Who would use your API anyway? You don’t need a developer platform, mobile apps and lovely hacks, right? This might be one of the certain reasons of your failure. There are many hackers out there waiting to use your APIs and do cool stuff and utilize your network. Think about a Twitter without Twitpic.

Step 2. Do not use standards

Standards are for dummies. Dummy developers take advantage of standards just to write their apps easily. Don’t let them do this easily and make them read every damn line of your documentation.

Invent your own standards! Because you’re smarter than everybody in IETF and you are a perfect architect to design new **authentication protocols **[ 1 ][ 2 ] (RFC 5849), **date-time formats **(RFC 3339) and even a new JSON standard (RFC 4627)

Do not apply standards and engineering practices. They’re for lamers. Read More →