David Poblador Garcia » just for fun

Brand new server, new WordPress version

David Poblador — Thu, 15 Jul 2010 23:28:10 +0000

I just moved my blog to a new location. It is the right time to move to a bigger server: new projects ahead!

Additionally I upgraded my WordPress installation to new version 3.0. Drop me a line (david at poblador dot com) if you find something broken.

60 more Spotify invitations

David Poblador — Wed, 14 Oct 2009 18:11:59 +0000

Just drop a note if you wanna get a Spotify invitation. I just got 60 new available invitations.

I’ve already sent 200 invitations. No more left. Sorry!

Playing Django: PageRank calculator

David Poblador — Fri, 03 Jul 2009 00:13:16 +0000

35 Celsius could be a good reason to get some fresh Die Weisse, but unfortunately, I’m not in Salzburg anymore. So I’ve decided to spend some hours playing Python and playing Django. So I’ve written a PageRank calculator I think it may be useful for all SEO fans out there. Have a look at the PageRank check tool.

WordPress 2.7.x & new theme

David Poblador — Wed, 25 Feb 2009 09:30:47 +0000

I’ve been playing at night with new WordPress 2.7 and a new theme, so if something is broken, just let me know (probably I was too asleep to change so many things at once).

Google App Engine + Spotify + Rainy weekend

David Poblador — Mon, 02 Feb 2009 00:16:29 +0000

I’ve spent a rainy weekend in Barcelona playing around with Google App Engine, Python and Spotify. And here is the result: Spotify World: a world of Spotify playlists.

10 more Spotify invitations

David Poblador — Sun, 01 Feb 2009 01:33:24 +0000

I got 10 more Spotify invitations. Leave a comment to get one. (I’ll grant one for each IP address)

I will inform you when I have more spotify invitations.

Again, I got 10 more Spotify invitations. Feel free to ask for one.

Tonight: Franz Ferdinand. Available in Spotify

David Poblador — Sat, 31 Jan 2009 16:51:52 +0000

New Franz Ferdinand album is already available in Spotify. Listen to Tonight in Spotify!

Little Big Planet Soundtrack (Spotify)

David Poblador — Fri, 30 Jan 2009 20:10:56 +0000

I made a quick compilation of Little Big Planet sound tracks for Spotify users. By the way, I still have 8 3 Spotify invitations left. Just drop a comment to get one.

Update: I’ve run out of invitations. Will keep you updated if I get more.

Google Treasure Hunt: Network Question

David Poblador — Tue, 04 Nov 2008 22:20:53 +0000

Network Problem

The network question was by far the easiest one in GTH 2008 contest.

Sample question:

Below is a diagram of a computer network. The nodes are hosts on the network, and the lines between them are links. A packet is sent out from host N with a destination of 201.107.56.70. Which nodes does the packet pass through on its way to the destination? (include start and final node in your answer)

After that, Google presented a list of nodes with their IP addresses, 3 different static routes and a default gateway. This is the entry for host N:

97.134.15.173

88.42.227.237 => 53.138.73.76

201.107.56.70 => 179.138.156.133

68.190.198.0/24 => 248.194.205.8

246.10.120.232

Pretty easy:

A packet going to 201.107.56.70 arrives at node N
Does it match 88.42.227.237 destination host? No… next try
Does it match 201.107.56.70 destination host? Yes!
The packet is forwarded to the host having 179.138.156.133 IP address (which is host B):

179.138.156.133

31.114.20.211 => 248.194.205.8

53.138.73.76 => 97.134.15.173

248.194.205.0/24 => 67.244.46.98

53.138.73.76

And so forth…

How would route table at host B look like?

devel@stewie:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
31.114.20.211   248.194.205.8   255.255.255.255 U     0      0        0 eth0
53.138.73.76    97.134.15.173   255.255.255.255 U     0      0        0 eth0
248.194.205.0   67.244.46.98    255.255.255.0   U     0      0        0 eth0
0.0.0.0         53.138.73.76    0.0.0.0         UG    100    0        0 eth0

Google Treasure Winners announced (and I’m among them)

David Poblador — Wed, 22 Oct 2008 07:30:37 +0000

Google Treasure Hunt winners abound from Official Google Blog.