Evan Weaver

Evan Weaver (systems engineer at Twitter) put together a great list of distributed system papers as well. His list is categorized and every paper in it is awesome. distributed systems primer: http://blog.evanweaver.com/2009/05/04/distributed-systems-primer/ distributed systems primer (update): http://blog.evanweaver.com/2010/08/12/distributed-systems-primer-updat…

I had RSI, chronic ankle pain after an injury, and back pain. I bought all sorts of ergonomic solutions. Some helped, but none completely. I was getting desperate since, as mentioned, typing is how I pay the bills. I can't just STOP. I was scouring the net and ran across a developer who swore that The Mindbody Prescription: Healing the Body, Healing the Pain by Sarno fixed his issues. I looked him up, proved to myself he was a dev and then basically said, fuck it, let's try it despite it seeming woo-woo to the extreme. Little to no pain to this day. This was after MONTHS of PT and ergonomic changes that didn't solve the problem. Anyway. Just my two cents. *EDIT - one of these was the article (perhaps both), https://blog.evanweaver.com/2012/09/05/a-programmers-guide-to-healing-… and http://aaroniba.net/how-i-cured-my-rsi-pain

This was actually previously discussed by Twitter's Evan Weaver. I can't find the article I'm thinking of, but this is close: http://blog.evanweaver.com/articles/2009/07/06/up-and-running-with-cas… My understanding is that it came down to Cassandra being the only one that was well tested in multi-datacenter configurations. I think there were other reasons, but that was the big one.

Can you elaborate a bit on this? Did you simply patch the GC? I've seen Evan Weaver's post (http://blog.evanweaver.com/articles/2009/04/09/ruby-gc-tuning/) on it, but that's it.

Evan Weaver blogged about Cassandra (http://blog.evanweaver.com/articles/2009/07/06/up-and-running-with-cas… awhile ago and used Twitter as a sample schema to show how it worked.

I read in several blog posts that Cassandra has its share of data-corrupting bugs. http://blog.evanweaver.com/articles/2009/07/06/up-and-running-with-cas… mentioned that even Facebook does not use it as a system of record. Wonder how Digg deals with that.

Here's the presentation slides from the author's blog: http://blog.evanweaver.com/articles/2009/03/13/qcon-presentation/

It isn't? http://blog.evanweaver.com/about/ says "I currently work at Twitter" and has a link to his resume, which says he started there in May.

#2: Sorry i consider this moot: - the docs for tsearch are dense, not terribly friendly, and acts_as_tsearch appears to be under documented and possibly not maintained/updated. So if tsearch has any deal winners over sphinx and solr (for me, key ones would be custom tokenizers/stemmers, UTF-8, column weights, indexing short words and acronyms, faceted search, indexing instance methods and has_many child records along with what's in parent record) they're not readily apparent. Granted i only tried to understand tsearch for ~20 minutes) and a_a_tsearch did well in benchmarks, see comments: (teh tsearch count for "god" in index by book does indicate a possibly serious problem) http://blog.evanweaver.com/articles/2008/03/17/rails-search-benchmarks… - The four leading search plugins: acts_as_[ferret, solr],ultrasphinx , thinkng sphinx work equally well with MySQL, and postgres, as far as i know. They're all pretty painless installs, if not terribly fast to build indexes, in the case of ferret and solr

This happens to be an oldie but a goody. On the same topic, I might as well spread the wealth of links I've amassed for learning and understanding Cassandra: Up and Running With Cassandra http://blog.evanweaver.com/articles/2009/07/06/up-and-running-with-cas… Building A Small Cassandra Cluster http://posulliv.com/?p=149 Cassandra PHP CRUD Class (Pandra) http://github.com/mjpearson/Pandra Getting Started - CassandraWiki http://wiki.apache.org/cassandra/GettingStarted Cassandra In Action http://spyced.blogspot.com/2010/03/cassandra-in-action.html