Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Attack of the Zombie Dynos

Lee Edwards
May 10, 2012
Programming
2
230

Attack of the Zombie Dynos

A brief summary of the zombie dyno problem that brought SideTour.com the morning of the talk.
5 minute lightning talk for NYC.rb on Tuesday, May 8, 2012

Lee Edwards

May 10, 2012
Tweet

More Decks by Lee Edwards

See All by Lee Edwards
Running global manufacturing on Ruby (among other things)
ledwards
0
59
When not to build a service-oriented architecture
ledwards
0
420
Bringing the Pivotal Process to an Early Startup
ledwards
2
370
SideTour at StartOut Demo Day
ledwards
1
99
Building a Technical Team
ledwards
1
210
Refactoring
ledwards
4
360
Life After LSM
ledwards
2
150
Keeping Your Clients ‘NSync - Node.js and Derby: The New Kids on the Block
ledwards
2
200
Test Driving with RSpec and Cucumber
ledwards
3
440

Other Decks in Programming

See All in Programming
Content Security Policy入門 セキュリティ設定と 違反レポートのはじめ方 / Introduction to Content Security Policy Getting Started with Security Configuration and Violation Reporting
uskey512
1
430
Nuxtベースの「WXT」でChrome拡張を作成する | Vue Fes 2024 ランチセッション
moshi1121
1
520
カラム追加で増えるActiveRecordのメモリサイズ イメージできますか?
asayamakk
4
1.6k
現場で役立つモデリング　超入門
masuda220
PRO
13
2.9k
Vue.js学習の振り返り
hiro_xre
2
130
offers_20241022_imakiire.pdf
imakurusu
2
360
Vitest Browser Mode への期待 / Vitest Browser Mode
odanado
PRO
2
1.7k
レガシーな Android アプリのリアーキテクチャ戦略
oidy
1
170
CSC509 Lecture 09
javiergs
PRO
0
110
Googleのテストサイズを活用したテスト環境の構築
toms74209200
0
270
EventSourcingの理想と現実
wenas
6
2.1k
弊社の「意識ﾁｮｯﾄ低いアーキテクチャ」10選
texmeijin
5
23k

Featured

See All Featured
Producing Creativity
orderedlist
PRO
341
39k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
246
1.3M
The MySQL Ecosystem @ GitHub 2015
samlambert
250
12k
Faster Mobile Websites
deanohume
304
30k
Large-scale JavaScript Application Architecture
addyosmani
510
110k
Building Adaptive Systems
keathley
38
2.2k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
Building an army of robots
kneath
302
42k
Statistics for Hackers
jakevdp
796
220k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
159
15k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
41
2.1k
10 Git Anti Patterns You Should be Aware of
lemiorhan
654
59k

Transcript

  1. Attack of the Zombie Dynos Lee Edwards [email protected]

  2. None

  3. WTF is this? 2012-08-05T07:51:37-07:00 heroku[router]: Error H12 (Request timeout) ->

    GET sidetour. com/ web=web.2 queue=0 wait=0ms service=0ms bytes=0

  4. Error H12 - Request timeout 1. Too much traffic for

    dynos to handle 2. DDoS attack 3. ???
  5. None
  6. None

  7. Steps to contain 1. Reboot your app heroku restart 2.

    Install rack-timeout

  8. Steps to fix 1. Wait for a Rack::Timeout::Error to be

    raised 2. Observe the stack trace 3. Fix the method that caused the problem 4. Deploy