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My MySQL Conference Schedule


Posted by Artem Russakovskii on April 13th, 2008 in Databases, Programming

Were there too many "my"'s in that title? Anyway… this week's MySQL conference is promising to be really busy and exciting. I can't wait to finally be there and experience it in all its glory. Thanks to the O'Reilly personal conference planner and scheduler and the advice of my fellow conference goers, I was able to easily (not really) pick out the speeches I am most interested in attending.

Here goes (my pass doesn't include Monday :( ):

Tuesday

8:30am Tuesday, 04/15/2008

State of MySQL

Keynote Ballroom E

Mårten Mickos (MySQL)

In his annual State of MySQL keynote, Marten discusses the current and future role of MySQL in the modern online world. The presentation also covers the acquisition …

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Some Useful vim Commands – My vim Cheatsheet


Posted by Artem Russakovskii on April 9th, 2008 in Linux, My Favorites, Programming

Updated: April 23rd, 2008

[WORK IN PROGRESS] Here is a list of commands that I use every day with vim, in no particular order. Out of a billion possible key combinations, I found these to be irreplaceable and simple enough to remember.

     

    *

    search for the word under cursor (to the end of the file)

    #

    search for the word under cursor (to the top of the file)

    ctrl-p,ctrl-n

    suggest (p)revious or (n)ext autocomplete from the list of existing keywords in the file or included files (!).

    :go NNN

    go to byte NNN

    .

    redo last command

    /SEARCH TERM

    search document for SEARCH TERM

    :%s/FOO/BAR/gci

    replace FOO with BAR (g)lobally, case (i)insensitively, and asking for (c)onfirmation

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How To Add A File Extension To vim Syntax Highlighting


Posted by Artem Russakovskii on April 2nd, 2008 in Databases, Linux, Programming

Updated: July 8th, 2009

Today I was asked a question about defining custom extensions for vim syntax highlighting such that, for example, vim would know that example.lmx is actually of type xml and apply xml syntax highlighting to it. I know vim already automatically does it not just based on extension but by looking for certain strings inside the text, like <?xml but what if my file doesn't have such strings?

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After digging around I found the solution. Add the following to ~/.vimrc (the vim configuration file):

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syntax on
filetype on
au BufNewFile,BufRead *.lmx set filetype=xml

After applying it, my .lmx file is highlighted:

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Same principle works, for instance, for mysql dumps that I have to do from time to time. …

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Updated: May 23rd, 2009

In this tutorial, I'll show you how to parse JSON using Perl. As a fun example, I'll use the new SouthParkStudios.com site released earlier this week, which contains full legal episodes of South Park. I guess the TV companies are finally getting a clue about what users want.

I will parse the first season's JSON and pull out information about individual episodes (like title, description, air date, etc) from http://www.southparkstudios.com/includes/utils/proxy_feed.php?html=season_json.jhtml%3fseason=1. Feel free to replace '1' with any valid season number.

Here's a short snippet of the JSON:

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Setting Up A MySQL Cluster


Posted by Artem Russakovskii on March 26th, 2008 in Databases, Linux, Programming, Technology

Updated: January 4th, 2009

Attention: Apparently since the release of 5.1.25, cluster is packaged separately. I need to do some reading and research first and then update the tutorial with the latest info.

Here are some quick links for now: http://blogs.mysql.com/kaj/2008/05/23/mysql-clusters-improved-release-model/, http://johanandersson.blogspot.com/2008/05/mysql-cluster-62-officially-released.html, http://blogs.sun.com/theaquarium/entry/improved_release_model_for_mysql.

This article contains my notes and detailed instructions on setting up a MySQL cluster. After reading it, you should have a good understanding of what a MySQL cluster is capable of, how and why it works, and how to set one of these bad boys up. Note that I'm primarily a developer, with an interest in systems administration but I think that every developer should be able to understand and set up a MySQL cluster, at least to …

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MySQL Conference 2008


Posted by Artem Russakovskii on March 24th, 2008 in Awesomeness, Databases, Linux, Personal, Programming, Technology

Updated: March 26th, 2008

April 14-17th is going to be an exciting time. Why? Because the 2008 MySQL Conference and Expo is going to be held in Santa Clara, CA. Who would want to miss out on a chance to lurk around, let alone talk to, some of the smartest people in the MySQL world? Well, those who don't have at least $1000+, of course. A 3 day pass to the conference without tutorials costs a whopping $1199. A full pass would dry up your pockets $1499.

Well, "good news everyone". Thanks to Sheeri Cabral of The Pythian Group, PlanetMySQL.org, Jeremy, and, most importantly, LinuxQuestions.org, I am now in possession of a 3-day conference pass!! I'm incredibly excited that I …

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Quick Perl Snippet: Finding If A File Has A Media Extension Using Regex


Posted by Artem Russakovskii on March 21st, 2008 in Programming

Updated: May 1st, 2008

Sometimes in my line of work, I need to figure out if a url or filename point to a media file by checking for the file extension. If it's a url, however, it may be followed by various parameters. Not to overcomplicate things, I came up with the following Perl code:

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#!/usr/bin/perl -w
use strict;
my $name = "some_file.flv"; # or http://example.com/file.mp4?foo=bar
my $is_media_type = ($name =~ /\.(wmv|avi|flv|mov|mkv|mp..?|swf|ra.?|rm|as.|m4[av]|smi.?)\b/i);
if($is_media_type){
  print "media extension found\n";
}
else{
  print "not a media file\n";
}

This gets the job done without triggering any false positives (at least for the files/urls I've been dealing with so far). Am I missing any obvious types? Do you …

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Must-Know People In The MySQL Field


Posted by Artem Russakovskii on March 18th, 2008 in Databases, Programming

Updated: April 8th, 2008

If you're serious about MySQL, it doesn't hurt to know the people closely tied to its development and maintenance as well as famous bloggers. Here's my ongoing list of people I consider important:

Peter Zaitsev – MySQL Performance Blog, former head of MySQL AB High Performance Group. His company Percona is available for consulting. He's a co-author of High Performance MySQL 2nd edition (great book).

Baron Schwartz – also know as Xaprb, Baron a co-author of High Performance MySQL 2nd edition and creator of innotop and Maatkit. Maatkit is simply brilliant, and so is Baron. Baron recently joined Peter Zaitsev at Percona.

Jeremy Zawodny – MySQL guru, works for Yahoo, and is considered a legend. He wrote mytop

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Programming Comic: Lisp, Perl, And God


Posted by Artem Russakovskii on March 17th, 2008 in Humor, Programming

Computer Science majors out there that went through tedious hours of studying Lisp – this is for you from xkcd. If you know Perl, it will make even more sense.

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Source: http://xkcd.com/224/

See Also: Best Programming Comic Ever: Code Quality In WTFs/Minute

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79

Mass Renaming Directories And Files Using Total Commander


Posted by Artem Russakovskii on March 12th, 2008 in Programming, Technology

Updated: September 16th, 2012

If you're like me, you constantly move and rename files and directories. You are also an extremely productive person with evangelical ideals of making every task as efficient as it can be. In this tutorial, I will use my favorite must-have file manager called Total Commander (formerly, Windows Commander) and its brilliant Multi-Rename Tool.

You can download a shareware version of Total Commander at www.ghisler.com. I encourage you to buy it after you try it as it'll soon become an integral part of your life. I've been using it for more than 10 years now and seriously can't imagine my computer without it.

Now for some quick tasks I'd like to accomplish using the Multi-Rename Tool in under a …

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Best Programming Comic Ever: Code Quality In WTFs/Minute


Posted by Artem Russakovskii on March 12th, 2008 in Awesomeness, Humor, Programming, WTF?

Courtesy of OSnews. This comic still cracks me up, weeks after I saw it. It's one of those comics that your CS teacher would print out and slap on his door, so that in the moments of doom students would at least have something humorous to look at. Here it is:

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MySQL Falcon Storage Engine Enters Beta Stage.


Posted by Artem Russakovskii on March 11th, 2008 in Databases, Linux, Programming

Updated: March 18th, 2008

Today Robin Schumacher, MySQL's Director of Product Management, announced that the mysql Falcon storage engine has moved into a beta release stage. Falcon, a new transactional storage engine introduced in mysql 6 (aka 5.2), has been in alpha for years. Other popular storage engines include MyISAM, InnoDB, which Falcon is supposed to challenge (successfully? :-/), and the upcoming Maria.

Falcon features:

  • ACID transaction compliant
  • Crash recovery
  • User-defined tablespaces
  • High-speed data caches
  • Advanced B-Tree indexes
  • Performance/diagnostic monitoring tables
  • Simplified configuration

You can download mysql 6 with Falcon here: http://dev.mysql.com/downloads/mysql/6.0.html….

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Sun buys MySQL for $1bln!


Posted by Artem Russakovskii on January 16th, 2008 in Databases, Linux, Programming, Technology

Updated: March 18th, 2008

"Didn't see that one coming. Their blog contains details to what this could mean for both companies. May as well be one of the most important takeovers of 2008 already!"

read more | digg story

Could this mean that the mysql cluster is finally going to get proper development attention? I don't know but sure as hell hope so. Congratulations to all mysql employees!…

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Make Screen and YaST Work Together


Posted by Artem Russakovskii on November 4th, 2007 in Linux, Programming

Updated: March 19th, 2008

I don't know about you but I've had a lot of problems making screen work nicely with YaST. Both putty and SecureCRT had major problems displaying YaST's ncurses interface. The screenshots below depict the problem quite clearly. If at this point you don't see anything like this, you are most likely not affected and can go get a beer.

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If you are seeing similar problems, here's the fix. After digging around a bit, I have discovered that the problem was incorrect data encoding. My character set was set to KOI8-R while ncurses expected UTF-8. Here is how to change the corresponding setting in putty:

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… and SecureCRT:

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Now restart YaST and voila:

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P.S. You may be wondering why my screen …

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FTPRush Cleanup Script


Posted by Artem Russakovskii on October 28th, 2007 in Programming

Updated: May 23rd, 2009

Removes all ftprush queue items that don't download to localhost. It is useful to run if you FXP a lot of files back and forth and want to clean up the queues from time to time, but don't want to delete anything that is downloading. Feel free to make a shortcut to this script and run it any time you want.

Note that this script is only compatible with the ANSI FTPRush version. The Unicode version is not supported.

You need to have Activestate Perl installed in order to run this script. http://www.google.com/search?q=activestate+perl+download

Script source is available from SVN here.

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