Spotify is an awesome music streaming service launched in 2008 by a Swedish startup. Just recently it became available in 14 different countries including US and UK. What’s rather interesting about this particular music streaming service is that at the end of last year they introduced an app platform. It opened up a whole new world inside the Spotify desktop client. There were various cool apps released in the first batch, like Last.fm and Moodagent. Be sure to check them out if you’re a Spotify user.

But the first batch of apps was just a start. Two weeks ago, a second batch of apps went out. And we are proud to be a part of it. We got an opportunity to build a Spotify app for Matador Records. It’s a well-known independent record label famous for their indie rock artists and bands. So we jumped on the opportunity and went to work.

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Recently, we worked on a project that required frequent polling of database table, processing each row, and writing output to different database table(s). The data tables are incoming and outgoing sms messages, and load would get quite high sometimes. We also had to support load balancing. Since our services are already done with spring – the choice was to try Spring Integration.

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If an object gets deallocated too early, other objects still might have references to it and accessing it will lead to crash. Enabling Zombie objects will prevent crashes because objects are never actually deallocated and we’ll get an exception if we try to access such an object. But figuring out which object is causing trouble is just smaller part of the job. We need to find out where is the extra release (or missing retain) that is causing troubles. Read more