Crate Shared Nothing Web Backends - Web Backend Meetup May 2014

May 27, 20143 likes1,943 views

Matthias Wahl

Talk about building real shared nothing web backends using crate data on Web Backend Meetup May 2014

Agenda
Shared Nothing
Crate
Shared Nothing Architectures using Crate
Cluster Workout

Prepare for Workout
1.) bash -c "$(curl -L try.crate.io)"
https://cdn.crate.io/downloads/releases/crate-0.38.2.tar.gz
2.) sh$ bin/crate
0.) share our “craty” WLAN
pw: select*fromcrate;

Prepare for Workout
3.) start up the twitter tutorial

Shared Nothing
Wikipedia:
!
a distributed computing architecture in which each
node is independent and self-sufficient, and there is no
single point of contention across the system. More
specifically, none of the nodes share memory or disk
storage.

Shared Nothing
Origin:
!
Micheal Stonebraker
“The Case for Shared Nothing” (1986)
!
http://pdf.aminer.org/000/255/770/
the_case_for_shared_nothing.pdf

Shared Nothing
Principle of most functional languages
Shared state/resources (memory) is what
makes threading hard
No SPOF
Easy concurrency

DB
Cache
App App App App
DB -
Replica
Cache Cache
Bad Idea

Crate
Austria and Berlin based Startup
founded 2013
open source since april
https://github.com/crate/crate

Crate
shared nothing massively scalable datastore
standing on the shoulders of giants

Crate
automatic sharding and replication
(semi-) structured models
blob support
SQL query language

Crate
powerful fulltext search capabilities
complex aggregations in near real-time
- no joins

Crate
crate-java
crate-jdbc
crate-python (+SQLAlchemy)
crate-ruby
…
CRATE Clients

Shared Nothing with
Crate
data and query execution is
distributed among all nodes
no master/slave - all nodes are equal
automatic sharding & replication

Shared Nothing with
Crate
example architecture
crate
app
crate
app
crate
app
…
Load Balancer

Shared Nothing with
Crate
horizontally scalable as hell
still flexible enough for complex applications
high availability for your whole stack

Shared Nothing with
Crate
create table blogpost (
id string primary key,
created timestamp,
text string,
creator string
)

Shared Nothing with
Crate
from sqlalchemy import Column, String, DateTime
from microblog.model import Base
import uuid
!
!
def genuuid():
return str(uuid.uuid4())
!
!
class BlogPost(Base):
!
__tablename__ = 'blogpost'
!
id = Column(String, default=genuuid, primary_key=True)
text = Column('text', String, nullable=False)
creator = Column('creator', String, nullable=False)
created = Column('created', DateTime, nullable=False)

$Shared Nothing with Crate @rpcmethod_route(request_method="GET") def list(self): """ Return all blogposts """ query = DBSession.query(BlogPost).order_by(BlogPost.created.desc()) blogposts = query.all() result = [] for post in blogposts: result.append({'id': post.id, 'created': post.created.isoformat(), 'text': post.text, 'creator': post.creator}) return {"data": {"blogposts": result}}$

Shared Nothing with
Crate
get into detail:
!
http://lovelysystems.github.io/
lovely.microblog/

CRATE
Thank you
web: https://crate.io/
github: https://github.com/crate
twitter: @cratedata
IRC: #crate
stackoverflow tag: cratedata

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Crate Shared Nothing Web Backends - Web Backend Meetup May 2014

1. Shared Nothing Web Backends Matthias Wahl - developer @ crate.io

2. Agenda Shared Nothing Crate Shared Nothing Architectures using Crate Cluster Workout

3. Prepare for Workout 1.) bash -c "$(curl -L try.crate.io)" https://cdn.crate.io/downloads/releases/crate-0.38.2.tar.gz 2.) sh$ bin/crate 0.) share our “craty” WLAN pw: select*fromcrate;

4. Prepare for Workout 3.) start up the twitter tutorial

5. Shared Nothing

6. Shared Nothing Wikipedia: ! a distributed computing architecture in which each node is independent and self-sufficient, and there is no single point of contention across the system. More specifically, none of the nodes share memory or disk storage.

7. Shared Nothing Origin: ! Micheal Stonebraker “The Case for Shared Nothing” (1986) ! http://pdf.aminer.org/000/255/770/ the_case_for_shared_nothing.pdf

8. Shared Nothing Principle of most functional languages Shared state/resources (memory) is what makes threading hard No SPOF Easy concurrency

9. DB Cache App App App App DB - Replica Cache Cache Bad Idea

10. DB Cache App App App App DB - Replica Cache Cache Bad Idea

11. Crate Austria and Berlin based Startup founded 2013 open source since april https://github.com/crate/crate

12. Crate shared nothing massively scalable datastore standing on the shoulders of giants

13. Crate

14. Crate automatic sharding and replication (semi-) structured models blob support SQL query language

15. Crate powerful fulltext search capabilities complex aggregations in near real-time - no joins

16. Crate crate-java crate-jdbc crate-python (+SQLAlchemy) crate-ruby … CRATE Clients

17. Shared Nothing with Crate data and query execution is distributed among all nodes no master/slave - all nodes are equal automatic sharding & replication

18. Shared Nothing with Crate example architecture crate app crate app crate app … Load Balancer

19. Shared Nothing with Crate horizontally scalable as hell still flexible enough for complex applications high availability for your whole stack

20. Shared Nothing with Crate create table blogpost ( id string primary key, created timestamp, text string, creator string )

21. Shared Nothing with Crate from sqlalchemy import Column, String, DateTime from microblog.model import Base import uuid ! ! def genuuid(): return str(uuid.uuid4()) ! ! class BlogPost(Base): ! __tablename__ = 'blogpost' ! id = Column(String, default=genuuid, primary_key=True) text = Column('text', String, nullable=False) creator = Column('creator', String, nullable=False) created = Column('created', DateTime, nullable=False)

22. Shared Nothing with Crate @rpcmethod_route(request_method="GET") def list(self): """ Return all blogposts """ query = DBSession.query(BlogPost).order_by(BlogPost.created.desc()) blogposts = query.all() result = [] for post in blogposts: result.append({'id': post.id, 'created': post.created.isoformat(), 'text': post.text, 'creator': post.creator}) return {"data": {"blogposts": result}}

23. Shared Nothing with Crate get into detail: ! http://lovelysystems.github.io/ lovely.microblog/

24. Cluster Workout!!!

25. CRATE Thank you web: https://crate.io/ github: https://github.com/crate twitter: @cratedata IRC: #crate stackoverflow tag: cratedata

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Crate Shared Nothing Web Backends - Web Backend Meetup May 2014

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