Nice articles on TCP

TCP KeepAlive - http://www.tcpipguide.com/free/t_TCPConnectionManagementandProblemHandlingtheConnec-3.htm

http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/usingkeepalive.html

Check if

s3cmd stupidity

Lots of stupidities in s3cmd, like the following:

If you miss the trailing slash in the directory names, s3cmd will ignore --skip-existing and will also not compare files using MD5 :( Here's the command that works:


$ s3cmd sync -v --delete-removed --skip-existing --rexclude=.* --rinclude .*localhost_access_log.2012-0[6-9].* s3://brp-logs/selfserve/ logs/

Reference: Solution 38 by William Denniss

Haproxy

-st / -sf hot reconfiguration params only work in daemon mode (so specify -D)

Haproxy clear counters all

Nice article: http://www.mgoff.in/2010/07/14/haproxy-gathering-stats-using-socat/
http://code.google.com/p/haproxy-docs/wiki/UnixSocketCommands

haproxy.cfg:

  stats socket /var/haproxy level admin

$ echo "clear counters all" | socat unix-connect:/var/haproxy stdio

Munin aggregation

http://blog.loftninjas.org/2010/04/08/an-evening-with-munin-graph-aggregation/

Remove non ascii chars

http://stackoverflow.com/questions/3337936/remove-non-ascii-characters-from-csv

Blogger emoticons

http://mltan100.blogspot.in/2008/02/use-emoticon-on-blogger-blog.html

Jdk source code

Here's the jdk source, linked from OpenJDK page
I wish they had made a source jar for it.

NOTE: Do not trust mac to extract this .tar.gz correctly. It extracts it as a .cpgz file which then recursively produces another .tar.gz -_-
Use tar -xvzf

Javax servlet source code

Have been searching it for quite a while now, finally found decent jars:
http://grepcode.com/snapshot/repo1.maven.org/maven2/javax.servlet/servlet-api/2.5
http://repository.ops4j.org/maven2/javax/servlet/source/

there is also a pom.xml that can be used :)

Rinetd

Because i always forget -_- :
http://www.ubuntugeek.com/rinetd-redirects-tcp-connections-from-one-ip-address-and-port-to-another.html

Also, add the correct repository in Ubuntu:
https://help.ubuntu.com/community/Repositories/CommandLine

IntelliJ and tomcat

Tomcat is nice, works well with IntelliJ
http://blog.andrewbeacock.com/2007/08/getting-tomcat-contexts-to-work-in.html

Trying out Googlebot's behavior with AJAX

Lets see if Googlebot crawls the dynamic content on this page on googlebot and Ajax.

Reflow reduction

Useful links:
http://code.google.com/speed/articles/reflow.html

Interesting applications of webkit

I just figured out a reflow reducing technique. Needs a headless browser which gives access to DOM and render tree though, so i thought i'd try something that is open sourced:

And look what i ran into :)
http://code.google.com/p/phantomjs/wiki/Interface

Seems pretty neat, i'm going to try this over the weekend.

Edit: CasperJs seems to be a wrapper on top of PhantomJs :)
http://n1k0.github.com/casperjs/

Helo World

My first post, helo world.