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persistent.info

Porting Twitter Digest to Google App EngineMay 11 2008

I've been meaning to play around with Google App Engine for a while, and as a quick project, I decided to port Twitter Digest to it (not as exciting as Kushal's Millidunst Calculator). This looked to be pretty straightforward: the original version was already in Python, and wasn't very complicated (just a single CGI script). It did indeed end up pretty easy; the whole process took a couple of hours.

The first step was to port the script from CGI-style invocation to the App Engine webapp framework. Then I looked into what it would take to get Python Twitter (the library I used for fetching data from Twitter) running. Switching it from urllib2 to urlfetch was pretty painless (though I don't use the posting parts of the API, so I didn't check if those work too). The other part of the library that I was relying on was its caching mechanism (since the digests are daily, there's no point in querying Twitter more often). DeWitt (the library's author) had thoughtfully put the caching functionality into a separate class, so it was easy to replace it with another on

Intern on the Google Reader teamApril 24 2008

Having interns has worked out well for the Reader team. Following my blog post, we were very pleased to get Nitin Shantharam and Jason Hall to help us out with Reader development. Their stints on the team resulted in a a bunch of features, and Jason is now back at Google working full-time (Nitin wasn't a slacker, he's just still in school).

We're looking for another intern or two this year. Internships generally last a couple of months to twelve weeks, are for full-time students, and would be in Google's Mountain View, California office. You can work on either Reader's backend (a C++ system for crawling millions of feeds, handling lots of items being read, shared, starred or tagged per second) or frontend (Java servers and JavaScript/AJAX-y craziness) depending on your interests and experience.

If you or anyone you know is interested in this internship, contact me at mihaip at google dot com. This page also has more general information about interning at Google.

persistent.coffeeApril 3 2008

I've been trying my hand at latte art. Though I have a very long way to go, I've been documenting my efforts, with a hope of learning from my mistakes. Blogger's mobile support makes it pretty easy to collect pictures, and I've finally gotten around to making a decent template for the "blog."

coffee.persistent.info is the result. Technically, this isn't a Blogger template, since I just have some static HTML as the content. Instead, it uses the JSON output that Blogger's GData API supports. Rendering the page in JavaScript allows for more flexibility. I wanted to make pictures that I liked take up 4 slots (a layout inspired by TwitterPoster). This imposed additional constraints (in order to prevent overlap between sequential large pictures). The display is generally reverse-chronological starting from the top left, but images are occasionally shuffled around to prevent such overlaps. There is also a bit of interactivity, the pictures are clickable to display larger versions. To help with all this, I've been experimenting with jQuery (also on Ma

Mail TrendsMarch 25 2008

I get a lot of email (especially at work). I'm trying a Inbox Zero-like approach in order to keep up with it. Though that's helping me to stay on top of things, I had the nagging feeling that I was probably on too many mailing lists, and that some of them were probably not worth it from a signal-to-noise ratio perspective.

Ideally something like the Reader Trends or Search History Trends page would exist for Gmail. I thought I could perhaps build it myself, but the absence of an official Gmail API deterred me. However, it occurred to me that the recently added IMAP support could act as an API of sorts. It should be easy to get just the message headers and slice and dice them to extract the stats that I was interested in.

Thus was born Mail Trends, an IMAP-based email analysis project. It can generate a bunch of tables, graphs and distributions based on time of day, senders, recipients, mailing lists, etc. To get a feel for what it can output, see the r

Two Safari 3.1 TipsMarch 22 2008

Safari 3.1 is out, and I've upgraded my Mac to it. Besides some issues with arrow keys in Reader (we're on it), it's working out well. Here are two hidden prefs that you may find useful:

defaults write com.apple.Safari IncludeInternalDebugMenu -bool true

The Develop menu that 3.1 includes is nice, but it seems to supplant the old "Debug" menu (i.e. the preference key that used to toggle it - IncludeDebugMenu - now toggles the "Develop" menu). The old menu had functionality that isn't present in the official one, most notably the "Caches" window that displayed the number of live JavaScript objects and made tracking down memory leaks much easier. If you'd like to bring back the old menu, you can use the new IncludeInternalDebugMenu key shown above

defaults write com.apple.Safari TargetedClicksCreateTabs -bool true

First spotted on Twitter, this forces new windows to open in tabs, one feature that I missed from my Firefox days.