Raschnet

DirEnv - change environment settings when navigating in your shell

Wed, 08 Feb 2012 19:33:43 -0500

DirEnv - change environment settings when navigating in your shell

http://icontactlabs.wordpress.com/2010/05/21/hunting-for-database-hotspots-part-1/

Tue, 04 Oct 2011 23:15:40 -0400

http://icontactlabs.wordpress.com/2010/05/21/hunting-for-database-hotspots-part-1/

"Engineering is about planning. Are you being intentional about your plans and discussing the..."

Tue, 26 Jul 2011 14:43:30 -0400

“Engineering is about planning. Are you being intentional about your plans and discussing the tradeoffs with your team?”

- me

Managing I/O in your web app

Wed, 20 Jul 2011 22:44:18 -0400

1. Decrease or distribute writes
2. Decrease or distribute reads

Poll: encouragement vs challenge?

Tue, 19 Jul 2011 18:10:01 -0400

Are you more motivated when told you can or when told you cannot do something?

"ttyrec is a tty recorder. Recorded data can be played back with the included ttyplay command. ttyrec..."

Sat, 09 Jul 2011 11:00:05 -0400

“ttyrec is a tty recorder. Recorded data can be played back with the included ttyplay command. ttyrec is just a derivative of script command for recording timing information with microsecond accuracy as well. It can record emacs -nw, vi, lynx, or any programs running on tty.”

- One Thing Well: ttyrec
Could be great To record explorations or performance testing results.

"If You Don’t Have Time to Do It Right, When Will You Have Time to Do It Over?"

Fri, 08 Jul 2011 10:11:01 -0400

“If You Don’t Have Time to Do It Right, When Will You Have Time to Do It Over?”

- John Wooden

Starting your Startup

Thu, 07 Jul 2011 11:01:05 -0400

Starting your Startup

A Byte of Python

Wed, 06 Jul 2011 22:25:22 -0400

A Byte of Python:

Book for learning Python

Python Module of the Week

Tue, 05 Jul 2011 16:00:00 -0400

Python Module of the Week:

It’s great to see lots of sites in this space where people can get a bitesize intro to tools in a given ecosystem and often teach experts about new tools too.

Other examples:

Reading about mDNS

Mon, 04 Jul 2011 20:51:38 -0400

Reading about mDNS

Velocity Conference 2011

Thu, 30 Jun 2011 09:45:35 -0400

Velocity Conference 2011

MongoDB Sharding

Sun, 19 Jun 2011 22:08:46 -0400

Did some testing of MongoDB sharding on Friday.

Some interesting conclusions:

During redistribution of shards, data can appear in result sets multiple times.
We inserted 1,000,000 records and it took ~ 15 minutes to rebalance about 368k records from one shard to the other (the dataset was somewhat weighted such that initially all records went on one shard).
Query times for an unindexed collection were pretty similar to an unindexed SQL table of similar size.
Getting data to be easily accessible and manipulable will require lots of denormalization, which in turn requires well-organized code and a separate integrity-checker.
If queries aren’t efficient to spread out to multiple shards, the main benefit of Mongo would be document-oriented schema rather than more rigid tables.