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Distributed key-value store for large amount of content?

posted Nov 3, 2010, 2:33 PM by Eugene A

What would you do now if you need huge media storage for your photos or videos? You can wait for Facebook to opensource its Haystack storage but that may never happen... You can try Mogilefs but you will run soon into the same problem as if you would store files directly in file system because Mogilefs stores every object in a separate file. But here might be the solution for your problems - distributed Key-Value store which uses stable Tokyo Cabinet storage and can be accesses with generic memcached client: http://kumofs.sourceforge.net/ .

Linux NUMA architecture.

posted Sep 29, 2010, 10:32 AM by Eugene A   [ updated Sep 29, 2010, 10:33 AM ]

Our Network admin being bored ran into interesting article about Linux memory architecture. It can be useful if you run memory hungry applications and experience some swapping. Here is the article link - http://jcole.us/blog/archives/2010/09/28/mysql-swap-insanity-and-the-numa-architecture/ .

NFS pitfalls

posted Sep 22, 2010, 12:47 PM by Eugene A   [ updated Sep 22, 2010, 12:53 PM ]

When debugging issue with .nfsXXX files I ran (with the help of coworker) into interesting article about NFS pitfalls. I think this article meant to be memorized here for future references. Here it is - http://www.time-travellers.org/shane/papers/NFS_considered_harmful.html.

More about Wordpress malware...

posted Jul 23, 2010, 5:06 PM by Eugene A

There is a nice site to check your site for possible malware - http://www.unmaskparasites.com/ , however one kind of malware will not show itself up to a "normal" user agent, I'm talking about one designed to poison Google index with advertisement. I wish Unmaskparasites had option to specify custom User-Agent for request. Until then analyze google cache for strange content using search query site:www.yourdomain.com or use wget with custom UA like this wget -U 'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)' http://www.yourdomain.com/ .

Recent attacks on Wordpress blogs.

posted Jul 12, 2010, 4:35 PM by Eugene A   [ updated Jul 12, 2010, 5:36 PM ]

There have been multiple Wordpress blog hacks detected. If you notice your Firefox/Chrome browser comlained about malicious software on your blog, you are most likely the target. First check that your blog is calling external jquery.min.js script. Second step - check for JohnnyA, JohnnyB and amin users with admin privs and disable them. Then check which php files got edited recently and restore them. Look for recent changes in theme files, (esp links.php), look for strings like "<?php o='" at the beginning of the script. More information can be found here: http://weblog.mediatemple.net/weblog/2010/07/02/1378-compromised-sites/ and here http://blog.unmaskparasites.com/2010/06/14/attack-on-wordpress-blogs-on-rackspace/.

Java 4-ever

posted Jun 25, 2010, 1:21 PM by Eugene A

As Friday end of workday treat enjoy funny SUN (or may i say Oracle) Java advertisement http://www.youtube.com/watch?v=KrfpnbGXL70

Google released command line tools for its popular products.

posted Jun 21, 2010, 11:57 PM by Eugene A

Google released command line tools for UNIX. Now you can upload Youtube video or create calendar event from your shell scripts.
Check this url  http://code.google.com/p/googlecl/ for more info.

Opscode Chef 0.9.0

posted Jun 21, 2010, 11:42 AM by Eugene A   [ updated Jun 21, 2010, 11:47 AM ]

As of today new version of Opscode Chef got released. Unfortunately CHEF-1205 didn't get fixed so it makes sense to wait till next release when it will be.

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