Tuesday Session 5: Stack Smashing

Presenter: David Czarnecki @czarnecki

Slides: http://speakerdeck.com/u/czarneckid/p/railsconf-2012-stack-smashing-cornflower-blue

Application Migration

start internal
end with external apps
iteraction breeds abstraction

The Unicorn

from Thin to Unicorn
wicked fast
kernel load-balancing
can do rolling restarts
signal for capacity

Service Configuration

if a server fails does it make a sound?
alias DNS to mysql server
- no redeploys if DB server changes
- shield from updating config when needed

Sexy Capistrono

sexy == DRY
common functionality into a gem

Application Monitoring

it has to be visual
it must be historical
Munin
request/sec, queries/sec

Infrastructure Monitoring

BDD on infrastructure using cucumber

Continuous Integration

Jenkins
Build failure notification on build failure via email

Contious Deployment

Deploy only deploys if build is successful
Deploy script same a manual deploy

Review

simplify as much as possible
upgrade small to big
alias services
DRY
monitor
validate - test infrastructure
integrate