Watched this youtube video yesterday; it’s great. I don’t know the story behind it, and don’t really care, but it’s nice, nonetheless.
The music is by some guys called “Sick Puppies” and the track is “All the same”, from the album “Dressed up as life.” It’s really a great track. Go buy it.
Edit: Turns out I do indeed care about the story behind this. You can read it here. I nearly cried.
That pretty much summarizes what happened over at Dreamhost today. Noticed how that’s not a link? I wouldn’t want you to click it and somehow get into using their services. Why?
My coffee pusher made me an offer I couldn’t refuse.
Pun is Copyright (c) 2008 Joen P. Olsen, All Rights Reserved.
Yes, Mr. Stavem tagged me in some random meme (again). Here goes:
I’m looking into various programming languages these days. Today I took a quick look at a guide to Io. Io is a small language, which has some pretty cool concepts, aggregated from other powerful languages (Lisp, Smalltalk, the list goes on.)
So here’s the mandatory fibonacci 0->36 code:
Io> fib := method(n, if(n < 2, 1, fib(n - 1) + fib(n - 2)))
Io> Date cpuSecondsToRun(fib(36))
==> 455.8999999999999773
Meh. Python did faster than that; of course none of them are a match for D. Also, monitoring the memory usage of the VM as this ran, it became obvious that there’s no tail recursion here.
Seriously though, Io is a fun language, and with things such as coroutines and a nice standard library, it has a good chance of making it.
We make the best bacon. And yeah, the article is so last year. Link
So, after the move, I haven’t had much time to buzz around with my pizzas. I even forgot the recipe I used in Oslo.
Our oven here is some piece of shit electrical monster, so it won’t bake my stuff evenly. So I bought a dedicated pizza oven. It too, is a piece of unknown-korean-brand-crap, but at least it hits 250C fairly quickly, and it even came with its own stone (hooray for not having to find a matching size elsewhere.)
I upped a set to flickr. Here’s my favorite:
My setup at home.
KitchenAid Artisan espresso machine, Krups burr grinder, Dreamfarm knockbin, 1883 syrups, cool sign I got for xmas, from Katie :-)
SQLAlchemy is an Object Relational Mapper (ORM) for Python, supporting a wide variety of databases.
As per the 0.4 documentation, it mentions that:
Is the Session a cache? Yeee…no. It’s somewhat used as a cache, in that it implements the identity map pattern, and stores objects keyed to their primary key. However, it doesn’t do any kind of query caching.
Admittedly, it would be an extremely daunting and challenging task to write a caching framework that would work well for all use cases. Yesterday, after some googling, I decided to write my own cache. As of version 0.4.1, there are some features that makes it possible to do this rather easily; you can write a MapperExtension that overwrites the ‘get()’ method that SQLAlchemy usually uses to fetch data. There you can cache your things. I’m doing this in memcached.
It’s built heavily on this thread from the SQLAlchemy mailinglist.
Oh, here’s the code.
How to use? Like this:
mapper(Foo, t_foo, extension=MemCachedMapper(mc, timeout=35))
Easy, eh? Now just use the session.query(Foo).get(xyz), and you’ll be caching results for 35 seconds (the second named argument to MemCachedMapper.) ‘mc’ is an instance of memcached or cmemcached, that is already connected.
This is in semi-production on my own pet-project, but I’d really appreciate some feedback from anyone who attempts to use this in their own code. If/when you run into a bug, write me here, and I’ll do my best to fix it.
Today we’re going to talk about ARCs, or Adaptive Replacement Caches.
So what is it? Well, lets talk about some other caching algorithms first.
So what’s an ARC? Well, it’s basically a more sophisticated caching algorithm, which sort of, kind of, looks like a MRU/LRU. We’ll try to explain it in further detail here, and also provide a Python implementation.