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PAINFUL SUCCESS
Jesper Richter-Reichhelm (@jrirei) / session 4853
Monday, 18 March 13
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Presented at QCon London
www.qconlondon.com
Purpose of QCon
- to empower software development by facilitating the spread of
knowledge and innovation
Strategy
- practitioner-driven conference designed for YOU: influencers of
change and innovation in your teams
- speakers and topics driving the evolution and innovation
- connecting and catalyzing the influencers and innovators
Highlights
- attended by more than 12,000 delegates since 2007
- held in 9 cities worldwide
Pain
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Flash client Backend
Monday, 18 March 13
7M players / month
Monday, 18 March 13
7M players / month
10K API calls / second
Monday, 18 March 13
7M players / month
10K API calls / second
200K DB operations / second
Monday, 18 March 13
7M players / month
10K API calls / second
200K DB operations / second
100K DB writes / second
Monday, 18 March 13
7M players / month
10K API calls / second
200K DB operations / second
100K DB writes / second
2 devops since 2009
Monday, 18 March 13
Success
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Painful Success
Monday, 18 March 13
Painful Success
Monday, 18 March 13
2009
Decisions
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
What is the right
software stack?
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
SQL
ap
lb
SQL
Browser
sql sql
apap
Monday, 18 March 13
2010
Scaling Up
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
0%#
20%#
40%#
60%#
80%#
100%#
0# 5# 10# 15# 20# 25# 30# 35# 40#
Monday, 18 March 13
0%#
20%#
40%#
60%#
80%#
100%#
0# 5# 10# 15# 20# 25# 30# 35# 40#
Monday, 18 March 13
0%#
20%#
40%#
60%#
80%#
100%#
0# 5# 10# 15# 20# 25# 30# 35# 40#
Monday, 18 March 13
Small things...
Monday, 18 March 13
AMF responses
Monday, 18 March 13
Checking connection
‘status’
Monday, 18 March 13
ActiveRecord caching
Monday, 18 March 13
Always check back
on reality!
Lesson 1:
Monday, 18 March 13
Big Things...
Monday, 18 March 13
Lot’s of tuning
Monday, 18 March 13
Lot’s of tuning
and more memory
Monday, 18 March 13
app
slave
master
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. cut replication
Monday, 18 March 13
app
master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. cut replication
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. remove old DBs
Monday, 18 March 13
app
master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. remove old DBs
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. drop database;
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. drop database;
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. drop database;
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. drop database;
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. drop database;
Monday, 18 March 13
app
1. create new DBs
2. setup replication
3. start using
masters
4. drop database;
Monday, 18 March 13
app
1. create new DBs
2. setup replication
3. start using
masters
4. drop database;
Monday, 18 March 13
You will make
mistakes!
Lesson 2:
Monday, 18 March 13
More things...
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. cut replication
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. cut replication
AB
AB
AB
AB
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
BA
AB
AB
AB
AB
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. cut replication
BA
AB
AB
AB
AB
Monday, 18 March 13
app
slave
master master
slave
1. create new DBs
2. setup replication
3. start using
masters
4. cut replication
BA
AB
AB
AB
AB
Monday, 18 March 13
app
slave
master master
slave slave
master master
slave
AC
AC
BD
BD
Monday, 18 March 13
app
slave
master master
slave slave
master master
slave
AC
AC
BD
BD
AC
AC
BD
BD
Monday, 18 March 13
app
slave
master master
slave slave
master master
slave
AC
AC
BD
BD
AC
AC
BD
BD
Monday, 18 March 13
app
slave
master master
slave slave
master master
slave
AC
AC
BD
BD
AC
AC
BD
BD
Monday, 18 March 13
The right thing...
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Software is easy,
data is hard!
Lesson 3:
Monday, 18 March 13
24 GB
44 GB
in 8 days
Monday, 18 March 13
Not enough memory
Monday, 18 March 13
Not enough memory
=> no backups
Monday, 18 March 13
Not enough memory
=> no backups
=> no new slaves
Monday, 18 March 13
Not enough memory
=> no backups
=> no new slaves
=> big problem
Monday, 18 March 13
24 GB
38 GB
in 3 days
Monday, 18 March 13
24 GB
38 GB
in 3 days
Fixed in v2.2
Monday, 18 March 13
2011
Operation Hell
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
lb lblblb
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
lb lblblb
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
SQL
EBS EBS EBS EBS
lb lblblb
Monday, 18 March 13
EBSSQLBrowser
lb
lb
lb
lb
ap
ap
ap
ap
ap
ap
ap ap
Monday, 18 March 13
EBSSQLBrowser
lb
lb
lb
lb
ap
ap
ap
ap
ap
ap
ap ap
Monday, 18 March 13
EBSSQLBrowser
lb
lb
lb
lb
ap
ap
ap
ap
ap
ap
ap ap
Monday, 18 March 13
EBSSQLBrowser
lb
lb
lb
lb
ap
ap
ap
ap
ap
ap
ap ap
Monday, 18 March 13
EBSSQLBrowser
lb
lb
lb
lb
ap
ap
ap
ap
ap
ap
ap ap
Monday, 18 March 13
EBSSQLBrowser
lb
lb
lb
lb
ap
ap
ap
ap
ap
ap
ap ap
Monday, 18 March 13
EBSSQLBrowser
lb
lb
lb
lb
ap
ap
ap
ap
ap
ap
ap ap
Monday, 18 March 13
EBSSQLBrowser
lb
lb
lb
lb
ap
ap
ap
ap
ap
ap
ap ap
Monday, 18 March 13
0"
500,000"
1,000,000"
1,500,000"
2,000,000"
Apr*10" Jul*10" Oct*10" Jan*11" Apr*11" Jul*11" Oct*11"
Monday, 18 March 13
0"
500,000"
1,000,000"
1,500,000"
2,000,000"
Apr*10" Jul*10" Oct*10" Jan*11" Apr*11" Jul*11" Oct*11"
AWS outage
in Ireland
Monday, 18 March 13
http://en.wikipedia.org/wiki/File:St%C3%B6wer_Titanic.jpg
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
lb lblblb
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
SQL SQL SQL SQL SQL
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
lb lblblb
Monday, 18 March 13
Monday, 18 March 13
Installed in 3 years:
Monday, 18 March 13
Installed in 3 years:
98 MySQL machines
Monday, 18 March 13
Installed in 3 years:
98 MySQL machines
195 Redis machines
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
2012/2013
Refactoring
Monday, 18 March 13
Lessons learned
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
Monday, 18 March 13
Server Database
One Game Session
Monday, 18 March 13
Server Database
One Game Session
Monday, 18 March 13
Rd
rd
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd
rd
Rd Rd
rd rd
SQL SQL SQL SQL SQL
ap apap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
lb lblblb
Monday, 18 March 13
Rd
rd
ap apap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
lb lblblb
Monday, 18 March 13
Rd
rd
ap apap
lb lblblb
Monday, 18 March 13
Monday, 18 March 13
1. Separate user and world DBs
Monday, 18 March 13
1. Separate user and world DBs
2. Migrate to JRuby
Monday, 18 March 13
1. Separate user and world DBs
2. Migrate to JRuby
3. Introduce life cycle
Monday, 18 March 13
1. Separate user and world DBs
2. Migrate to JRuby
3. Introduce life cycle
4. Remove (user) DBs
Monday, 18 March 13
1. Separate user and world DBs
2. Migrate to JRuby
3. Introduce life cycle
4. Remove (user) DBs
5. Enjoy!
Monday, 18 March 13
Separate user DBs
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
SQL SQL SQL SQL
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
lb lblblb
Monday, 18 March 13
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
SQL SQL SQL SQL
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL SQL
sql sql
SQL SQL
sql sql
SQL
sql
lb lblblb
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
SQL SQL SQL SQL
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQL
lb lblblb
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
SQL SQL SQL SQL
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQL
Rd
rd
Rd
rd
lb lblblb
Monday, 18 March 13
JRuby
Monday, 18 March 13
http://www.flickr.com/photos/biblicone/3425903181/sizes/l/in/photostream/
Monday, 18 March 13
JRuby v2
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Throughput
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Rails 3.2.8
MRI 1.8.7
Throughput
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Rails 3.2.8
MRI 1.8.7
Rails 3.2.8
MRI 1.9.3
Throughput
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Rails 3.2.8
MRI 1.8.7
Rails 3.2.8
MRI 1.9.3
Rails 3.2.8
JRuby 1.7.2
Throughput
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Rails 3.2.8
MRI 1.8.7
Rails 3.2.8
MRI 1.9.3
Rails 3.2.8
JRuby 1.7.2
Throughput
no benchmark
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Rails 3.2.8
MRI 1.8.7
Rails 3.2.8
MRI 1.9.3
Rails 3.2.8
JRuby 1.7.2
Throughput
no benchmark
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Rails 3.2.8
MRI 1.8.7
Rails 3.2.8
MRI 1.9.3
Rails 3.2.8
JRuby 1.7.2
Throughput
no benchmark
multi
threaded
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Rails 3.2.8
MRI 1.8.7
Rails 3.2.8
MRI 1.9.3
Rails 3.2.8
JRuby 1.7.2
Throughput
no benchmark
multi
threaded
tuning
Monday, 18 March 13
0
50
100
150
200
Rails 2.3.11
MRI 1.8.7
Rails 3.2.8
MRI 1.8.7
Rails 3.2.8
MRI 1.9.3
Rails 3.2.8
JRuby 1.7.2
Throughput
no benchmark
multi
threaded
tuning
cpu
saturation
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
SQL SQL SQL SQL SQL
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap ap
ap ap
ap ap
ap ap
ap ap
ap ap
ap ap
ap ap ap ap ap ap ap ap ap apap ap ap
lb lblblb
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
SQL SQL SQL SQL SQL
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap apap ap ap
lb lblblb
ap
ap
ap
ap
ap
ap
ap
ap
ap
ap
ap
ap
ap
ap
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
NEW OLD
Monday, 18 March 13
NEW OLD
Monday, 18 March 13
NEW OLD
Monday, 18 March 13
NEW OLD
Monday, 18 March 13
Life cycle
Monday, 18 March 13
app
Monday, 18 March 13
app
Monday, 18 March 13
app
servlet
Monday, 18 March 13
app
servlet archiver
Monday, 18 March 13
User
Registry
app
servlet archiver
Monday, 18 March 13
User
Registry
S3
app
servlet archiver
Monday, 18 March 13
User
Registry
SQL Rd
S3
app
servlet archiver
Monday, 18 March 13
User
Registry
SQL Rd
S3
app
servlet archiver
Monday, 18 March 13
World
Data
User
Registry
SQL Rd
S3
app
servlet archiver
Monday, 18 March 13
World
Data
User
Registry
SQL Rd
S3
Load Balancer
app
servlet archiver
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd
rd
Rd
rd
SQL SQL SQL SQL
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQL
Rd
rd
Rd
rd
lb lblblb
Monday, 18 March 13
SQL SQL
sql sql
SQL SQL
sql sql
SQL SQL
sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd Rd
rd rd
Rd
rd
Rd
rd
SQL SQL SQL SQL
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQL
Rd
rd
Rd
rd
Rd
rd
lb lblblb
Monday, 18 March 13
Removing DBs
Monday, 18 March 13
SQL SQL
sql
Rd
rd
Rd
rd
Rd
rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQLSQL SQL
sql sql
SQL SQL
sql sql
Rd Rd
rd rd
Rd Rd
rd rd
Rd
rd
SQL SQL SQL SQL
Rd
rd
Rd
rd
Rd
rd
lb lblblb
Monday, 18 March 13
SQL SQL
sql
Rd
rd
Rd
rd
Rd
rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQL
Rd
rd
Rd
rd
lb lblblb
Monday, 18 March 13
SQL
sql
Rd
rd
Rd
rd
Rd
rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQL
Rd
rd
Rd
rd
lb lblblb
Monday, 18 March 13
Enjoy
Monday, 18 March 13
SQL
sql
Rd
rd
Rd
rd
Rd
rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQL
Rd
rd
Rd
rd
lb lblblb
Monday, 18 March 13
Rd
rd
Rd
rd
Rd
rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
SQL
sql
SQL
Rd
rd
Rd
rd
lb lblblb
Monday, 18 March 13
Rd
rd
Rd
rd
Rd
rd
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
ap apap ap ap ap ap ap ap ap ap apap ap ap
Rd
rd
Rd
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Rd
rd
lb lblblb
Monday, 18 March 13
http://www.flickr.com/photos/aigle_dore/
Monday, 18 March 13
http://www.flickr.com/photos/aigle_dore/
Monday, 18 March 13
Looking Back
Monday, 18 March 13
What is the right
software stack?
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
What is the right
software stack?
Monday, 18 March 13
What is the right
software stack?
Monday, 18 March 13
What kind of application
are we building?
Monday, 18 March 13
User
Monday, 18 March 13
User
Avatar
Monday, 18 March 13
User
Avatar
Cus-
tomer
Monday, 18 March 13
User
GardenAvatar
Cus-
tomer
Monday, 18 March 13
User
GardenAvatar
Cus-
tomer
Tiles
Deco-
rations
Monday, 18 March 13
User
GardenAvatar
Cus-
tomer
Tiles
Deco-
rations
Monday, 18 March 13
User
GardenAvatar
Cus-
tomer
Tiles
Deco-
rations
User
GardenAvatar
Cus-
tomer
Tiles
Deco-
rations
Monday, 18 March 13
User
GardenAvatar
Cus-
tomer
Tiles
Deco-
rations
User
GardenAvatar
Cus-
tomer
Tiles
Deco-
rations
Monday, 18 March 13
http://en.wikipedia.org/wiki/File:Columbus_Breaking_the_Egg%27_(Christopher_Columbus)_by_William_Hogarth.jpg
Monday, 18 March 13
http://en.wikipedia.org/wiki/File:Columbus_Breaking_the_Egg%27_(Christopher_Columbus)_by_William_Hogarth.jpg
Monday, 18 March 13
http://en.wikipedia.org/wiki/File:Columbus_Breaking_the_Egg%27_(Christopher_Columbus)_by_William_Hogarth.jpg
Monday, 18 March 13
http://en.wikipedia.org/wiki/File:Columbus_Breaking_the_Egg%27_(Christopher_Columbus)_by_William_Hogarth.jpg
Monday, 18 March 13
http://en.wikipedia.org/wiki/File:Columbus_Breaking_the_Egg%27_(Christopher_Columbus)_by_William_Hogarth.jpg
Monday, 18 March 13
What kind of application
are we building?
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Monday, 18 March 13
Plain File System
Monday, 18 March 13
Monday, 18 March 13
Handle state
the right way!
Monday, 18 March 13
Software is easy,
data is hard!
Lesson 3:
Monday, 18 March 13
You will make
mistakes!
Lesson 2:
Monday, 18 March 13
Always check back
on reality!
Lesson 1:
Monday, 18 March 13
Always check back
on your assumptions!
Lesson 1:
Monday, 18 March 13
Thank you
Monday, 18 March 13
Jesper Richter-Reichhelm
@jrirei
woo.ga/backend
wooga.com/jobs
Monday, 18 March 13
Jesper Richter-
Reichhelm
@jrirei
wooga.com/jobs
woo.ga/backend
Monday, 18 March 13
Watch the video with slide synchronization on
InfoQ.com!
http://www.infoq.com/presentations/scalability
-case-study

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