Ruby on Rails is a web application framework used to build many websites and applications. It was first announced in 2005. The framework emphasizes convention over configuration and is optimized for programmer happiness and productivity. It uses the model-view-controller architectural pattern to provide a full stack solution for developing database-backed web applications according to the Ruby programming language.

1. Ruby on Rails Web development
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2007.06.01 Yan CSS
2007 P1.cn Blog 2007.12.20 Geoffery Ruby on
Ruby on Rails Rails
3 Ruby on Rails
Idea Beta
Ruby on Rails 4
P1.cn Beta
Blog
start-up
Rails
Q2.0GHz, 4GB RAM, SCSI
P1 RAID-1 Kernel 2.6.22-3-amd64 #1 SMP,
P1 Apache2, MySQL5.0.45, Ruby1.8.6, Ruby-MySQL2.7,
Rails 1.2.3, Mongrel 1.1.4.
P1.cn
2007 7 MySQL
Mongrel
Ruby on Rails 2007
P1.cn
2007.03.01
2007.03.15 2008 1
2007.04.12 Beta
2007.09.22 Gamma Rails
PV
2007.09.28 P1.cn P1.cn 5
Mongrel Mongrel
2007.03.01 Ruby on Rails mongrel_proctitle Mongrel
2007.05.21 Benson Ruby on 20 Rails
Rails
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2. transaction MySQL
Technology
1. mongrel 40 innodb_lock_wait_timeout
20 mongrel 150M RAM, ActiveRecord :after_update, :after_destroy
mongrel callback
2. monit/god mongrel ActiveRecord Built-in Transactions
mongrel ActiveRecord destroy save
mongrel transaction activerecord/lib/
transaction.rb filter chain
3. MySQL after_update after_destroy transaction
4. MySQLslow query log, transaction commit
MySQL
SQL include select action_cache after_update
association after_destroy expire_action
find_by_sql expire_action
5. RAID-5
acts_as_commentable
6. action cache
fragment cache ramfs
7. memcached sessions mount -t ramfs ramfs /home/yay/rails_app/current/
8. Memcached tmp/cache
Cache
memcached Memcached 6 PV
9. Apache2 Nginx 0.5.35 Swiftiply event mongrel fair proxy
Nginx,
Memcached mongrels server 1 MySQL
mongrels server 2
PV
Request 30 reqs/sec.
12 3600 sec
12 x 3600 sec x 30 reqs/sec = 1296000 reqs.
1. find
:select, :limit, :offset. Rails find
1 Mongrel 2. find_by_* find_by_columnname
production log ActiveRecord
method_missing
(ActiveRecord::StatementInvalid) "Mysql::Error: find_by_sql find
Lock wait timeout exceeded; try restarting transaction: 3. find_by_sql SQL
UPDATE some_table..... find find_by_sql
ActiveRecord SQL find_by_sql
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3. 4. View HTML link_to, Blog Ruby on Rails
url_for helper HTML
Ruby twitter.com Ruby on
railsbench Rails, twitter (Evan Williams)
Twitter Ruby on Rails
Ruby on Rails
Ruby on Rails Ruby
Rails Rake, Capistrano
Rails Plugin
Ruby on Rails
TDD
Production 7 PHP .NET Java
Load Balance
SA Ruby
on Rails
Ruby on Rails
Ruby on Rails
Ruby on Rails
Ruby on Rails
Phusion Passenger mod_rails.
Linux Ruby on Rails
Linux/Ruby
(Jesse Cai)
1997
Ruby on Rails 2005
UUZone
Twitter.com DHH Blog
Ruby on Rails Web2.0
Twitter.com
CTO
Twittter Blog
Ruby on Rails DHH : zhaojp@csdn.net)
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