jruby at linkedin
Post on 05-Dec-2014
1.857 Views
Preview:
DESCRIPTION
TRANSCRIPT
Recruiting Solutions professional hacking
JRuby at LinkedIn
Baq Haidri | @baqhaidriWednesday, August 3rd 2011
in three acts
professional hacking
Me
• Generalist• Background in Java, not Ruby
2
• Over one user added per second• Mostly Java• Strong product focus
professional hacking
2 4 8
17
32
55
90
2004 2005 2006 2007 2008 2009 2010
LinkedIn Members (Millions)
100M+ LinkedIn
professional hacking
Act I: The Data
4
professional hacking 5source: Mathieu Bas/an using Gephi on LinkedIn skill data
professional hacking 6source: Mathieu Bas/an using Gephi on LinkedIn skill data
professional hacking 7
Rails Prototype
professional hacking
Act II: The Challenge
8
professional hacking 9
oldemort
professional hacking 10
Service Call
Unified URL genera5on
Interna5onaliza5onQui a consulté votre profil?
Security, Auth, Iden5tyNaviga5on Bar
professional hacking
Tomcat
Request
LinkedIn Spring MVC
JRuby-‐Rack
SiteMesh
Sinatraget ‘/hello’ do
erb :layoutend
<html> <head>
<title>Hi</title></head><body>
Hello from JRuby!</body>
</html> Response
11
professional hacking 12
Hello from JRuby!
professional hacking
Service Calls
13
Pre-existing library for parallel, de-duplicating async data operations, loosely based on REST
Clunky abstractions in Java, but wrapped by Ruby:
professional hacking
Ruby’s simplicity
14
Some Ruby wrappers were created to mimic Java APIs but Ruby made them more expressive:
professional hacking
Act III: To Production
15
professional hacking 16
huh?
#winning!
professional hacking
Deployment
17
source: LinkedIn internal performance graph
Ops knows nothing‣ Configuration‣ Deployment‣Monitoring
Standard monitoring already available via JMX:‣ Latency‣ Requests/Second‣Memory and CPU usage
professional hacking
Gotchas
18
source: LinkedIn internal performance graph
Unpack wars on deployment Watch out for PermGen usage:
Leak! Restart
Fixed
professional hacking
Flags
JVM:‣ -XX:PermSize=256m‣ -XX:MaxPermSize=256m‣ -XX:+CMSClassUnloadingEnabled
JRuby:‣None, but still use 1.8.7‣ JRuby 1.6.2
19
professional hacking
Performance
Internal latency is averaging 700ms
20
Time spent in Ruby<= ~50 ms
source: LinkedIn internal performance graph
professional hacking
Conclusion
21
professional hacking
Happily Ever After
Adoption of JRuby is growing internally Open-minded, polyglot culture
22
professional hacking
JRubyConf Swag Contest
Visit linkedin.com/skills/skill/JRuby Tweet-share the page Be sure to include link back to JRuby Skills page,
with the #in tag and a #jrubyconf tag. First 40 users to tweet will win a prize Winners announced at lunch tomorrow
23
professional hacking
Questions?
24
top related