Tickets went on sale for Google’s Input/Output developers conference at 10 a.m., Eastern on Tuesday. But if you don’t have your pass yet, you’re out of luck. All tickets sold out in around half an hour.

The demand for the tickets continued despite Google’s efforts to make the event a little more exclusive, including hiking the price of admission. The tickets for the three-day event were $900, though there were a limited number of academic tickets for $300, which sold out in minutes. It was record-setting sellout for Google, which passed out all of its tickets in just under an hour last year, T he Verge reported.

Android is becoming an increasingly popular platform for developers as it gains marketshare, though it still lags behind Apple when it comes to attracting developers.

Both platforms have their pitfalls. Apple, for example, is notorious for trying to exert a lot of control over its developers, while Android’s main problem is fragmentation.

In a recent study from the research firm IDC, developers said that they are staying with Apple, with 89 percent of them saying they’re interested in making software for the iPhone and 88 percent expressing interest in the iPad.

Interest in Android phones dropped just under 5 percent, the report said, with 78.6 percent and 65.9 percent of developers expressing interest in developing for Android phones and tablets, respectively. They said that the variety of Android devices and systems discourage them from wanting to develop on the platform. But the ticket sales for Google I/O indicate that this hasn’t discouraged interest in learning about it.

Apple’s main developer conference, the five-day Worldwide Developers Conference (WWDC) also has a history of selling out on its opening day, though its heftier price tag of $1,599 slows folks down a little bit. According to MacWorld, WWDC 2011 sold out in about 12 hours; WWDC 2010 took eight days.

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