3. Java, scala, python, nodejs, php… apps scaling automatically in the cloud.
We cover your ass, you can focus on your own stuff
http://www.clever-cloud.com
PAAS PROVIDER
8. SO WE NEED TO BE ABLE
TO DISPATCH THE WORK
SCALE OUT
• Many workers
doing the same
thing
• No SPOF
• Growing is more
easy
• Introduce best
practice
SCALE UP
• 1 Fat instance
• 1 Fat application
• SPOF (single point
of failure)
• Hard to maintain
• Always has a limit
• Short term
meaning
14. DATASTORE CHOICES
ARE DRIVEN BY USAGE
Make
decisions
based on
needs
Do I need
atomicity of
requests ?
Do I need
concurrent
access ?
Do I mostly
read or
write ?
Do I need
relational ?
Do I need
big storage
capacity ?
Do I need
high
availability ?
15. • Not a big volume
• DB have to manage
data TTL
• Data model : K/V
• Multiple writes at the
same time
• High availability
I need to store sessions
QUICK EXAMPLE
16. • Not a big volume
It’s OK, PG can handle
small quantity of data
• DB have to manage
data TTL
No, I have to do it
manually
• Data model : K/V
No, PG is relational
(mainly)
• Multiple writes at the
same time
No, PG is Atomic
• High availability
PG is awesome ;-) Use
of PG bouncer or
similar allow good
clustering
I need to store sessions
QUICK EXAMPLE
17. • Not a big volume
It’s OK, redis can
handle small quantity
of data
• DB have to manage
data TTL
Yes Redis can do it
• Data model : K/V Yes
• Multiple writes at the
same time
No, redis is pseudo
Atomic (master/slave)
• High availability
Redis is great, but
cauterization is rude…
I need to store sessions
QUICK EXAMPLE
18. • Not a big volume
It’s OK, CB can handle
small quantity of data
• DB have to manage
data TTL
Yes CB can do it
• Data model : K/V Yes
• Multiple writes at the
same time
OK, this is possible
with memcached
protocol
• High availability
Clustering is built in, no
downtime
I need to store sessions
QUICK EXAMPLE
19. USE ONLINE
DATABASE / BE
READY TO TEST
IN JUST A FEW
MINUTES
NO NEED TO TRASH YOUR COMPUTER
30. DO NOT USE FILE
SYSTEM AS DATASTORE
File system are POSIX compliant
• POSIX is ACID
• POSIX is powerful but is bottleneck
• File System is nightmare of ops
• File System is create coupling (host provider/OS/language)
• Free SPOF multi tenant File System is a unicorn
STORE IN DATABASE, OR DATASTORE LIKE S3 (AWS)
DEDICATED TO FILE MANAGEMENT