weekends are for leisure

Yesterday, during lunch, I read through these blog posts that walk through the redis source code:

http://pauladamsmith.com/articles/redis-under-the-hood.html

http://pauladamsmith.com/blog/2011/03/redis_get_set.html

I won’t go into the details now, but while investigating redis for work I saw a use case where being able to intersect sorted and unsorted sets would be nice. Un-sorted elements would have a 0 score (even better if it were customizable). Redis doesn’t currently support this, so I hope to contribute by adding this feature.

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Posts beyond this point were migrated to tumblr from my two previous blogs. Was tired of using wordpress and, more importantly, having my writings spread far and wide.

Thank you very much.

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Too many URLs fly by me in a given week. Sometimes I take the time to digest them, usually after the tab’s been open for a week or more. Lately I’ve been making more of an effort to really think about what I read, to take notes, and share what I’ve learned.

Here are things I’ve read lately, along with the bits I found the most interesting.

10 Business Models that Rocked 2010

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I haven’t been writing enough lately. Facebook’s 2-cent interactions haven’t satisfied, and I’ve noticed myself having a harder time organizing and explaining complex thoughts. That needs to change.

On a related note, initially I thought it was a good idea to separate my blogs into technical and non-technical. My intent was to be considerate of whatever audience I may have, to let them know what to expect. But that’s proving to be a pain in the ass because sometimes my posts are a blend of tech and non-tech. And it also means I have multiple places/accounts/sites to keep track of, but that’s more of a mental hangup that an actual hardship.

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Every now and then a spam comment gets through Akismet and awaits moderation. Here are a few of the funnier ones. Of course, I’m not posting the links or websites they originally attempted to link to.

B says:

It can provide additional storage space. Occasional table is the term used for any small table but, more generally for a cocktail, end table and sofa. It never occurred to me to use the Ghost Chair! Please login for country specific pricing. She chooses to feature items that embody what she feels is the modern spirit: Each [redacted] piece is built to our clients requirements and then is stained or painted and finished in one of our finishing shops.

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Moved away from storing individual string values to storing whole objects/documents in redis hashes. Hashes make more sense when you need to store a group of data values like a blog post.

But I’m not making a blog. My task it to create an updated version of my personal journal and information storage system. Daily I use it to log my thoughts, to stage blog posts (like this one), keep track of links to check later (which often doesn’t happen), keep todo lists for projects, and other things. But the old version relied too heavily on subfolder-type organization. The new version will be tag based, which will hopefully make it easier for me to keep things from getting buried in my hierarchy. Since the new design is tag-based, the data structures involved are simpler, opening the door for me to give redis a try.

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Thought this episode of Science Friday was interesting and worth-mentioning. It talks about the methods of counting the number of people in crowds (at rallies and such) and the merits of doing so. Especially interesting is the idea of having an independent party systematicaly counting crowds at events, in order to present a more accurate picture of the populous’ support for a given issue (mentioned at around 10:30 in the audio). Would be great for democracy.

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In my quest to learn new things, specifically the following things, I’ve been both excited and drained:

• node.js
• Redis
• document database
• haml
• sass
• a micro-framework

By “new things” I really mean “some cutting edge stuff that seems pretty cool”, the “cutting edge” portion being the source of most of my struggle. New tools, languages and software have sharp edges.

Since I love fast and light software, node.js is my current casual focus. Also helps that I’ve been learning more JavaScript lately (through work and various side projects).

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I’ve worked on several new and different things since July, and all thanks to my new job. Say “hooray” with me… Hooray! Luckily I recently got to do some compiler-style expression parsing. Not sure whether it’s my 100% favorite brand of problem to solve, but anything compiler-related is very, very near the top of my list.

We’re working on a jQuery plugin that I won’t share the details of yet, but the API contains a way to filter data using string matching expressions. It supports the normal comparison operations like “starts with”, “equals”, “matches regex”. Those are simple. Tack on logical operators like AND, OR and NOT, and you’ve now got some fancy parsing footwork to do. Imagine something like “Title^=Jimbo AND ID<45 OR Category IN 45,56,67”.

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Trying to do a brain-dump of things I’ve encountered at my new job, since I’ve been doing work in several new areas.

My employer’s website was crashing on IE7. When I tried to re-create the issue on my IE8 machine, it crashed for me as well. Also crashed when I put IE8 in IE7 mode (the Developer Tools are quite nice).

Took me a while to get used to the IE Developer Tools, and eventually I found the JavaScript debugger. Problem was, I couldn’t figure out how to debug a site that crashes the browser once it loads. I thought maybe I could load the page and start the debugger before it crashed. But that didn’t work because what I really needed to do was start the debugger and also tell it to break immediately. If I remember correctly, it defaults to breaking on errors. You have to de-select that button and then click the one next to it so it breaks immediately. Needless to say I didn’t have enough time to do both.

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