2012-08-29 - NoSQL Bootcamp (Redis, RavenDB & MongoDB für .NET Entwickler)

Daten

2002 2004 2006 2008 2010 2012

Anforderungen
an ein verteiltes System

Consistency
Konsistenz

Partition
Availability
Tolerance Verfügbarkeit
Ausfalltoleranz

“Drum prüfe,
wer sich ewig bindet.”
Friedrich Schiller

› 
› 
›
›
›

› SET note1:title "Mittag"
› SET note1:message "nicht vergessen"

› KEYS note1:*
› GET note1:title
› DEL note1:title note1:message

http://bit.ly/ISv9f6

“While being RESTful is a goal of the
HTTP API, it is secondary to the goal of
exposing easy to use and powerful
functionality”
Ayende Rahien on the HTTP API - http://ravendb.net/documentation/docs-http-api-restful

›
›
›

C:>curl -X GET http://localhost:8080/docs/Categories/1 -i
HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
ETag: 00000000-0000-0200-0000-000000000004
{
"Name" : "Normal Importance",
"Color" : "green"
}

Classic Linq Style Lucene Style
var notes = session var notes = session.Advanced
.Query<Note>() .LuceneQuery<Note>()
.Where(n => n.Category == “Important") .Where(“Category:Important")
.ToArray(); .ToArray();

CODASYL model SQL Agile becoming more Google MongoDB initial
published invented popular BigTable release

IBM’s Oracle Brewer’s Amazon
IMS INGRES founded CAP born Dynamo

1966 1969 1970 1973 1974 1977 1985 1990’s 2000 2004 2007 2008 2009

10gen NoSQL
Codd publishes Term “object-oriented founded Movement
relational model paper database” appears
in 1970 Apache Cassandra
initial release

–
› use WebNote
› db.Notes.save(
{
Title: 'Mittag',
Message: 'nicht vergessen‘
}
);

› db.Notes.save

–

for(i=0; i<1000; i++) {
['quiz', 'essay', 'exam'].forEach(function(name) {
var score = Math.floor(Math.random() * 50) + 50;
db.scores.save({student: i, name: name, score:
score});
});
}
db.scores.count();

–

› db.Notes.find();
› db.Notes.find({ Title: /Test/i });
› db.Notes.find(
{ "Categories.Color": "red"}).limit(1);

–
› db.Notes.update({Title: 'Test'},
{'$set': {Categories: []}});

› db.Notes.update({Title: 'Test'},
{'$push': {
Categories:
{Color: 'Red'}
}
});

–
› db.dropDatabase();
› db.Notes.drop();
› db.Notes.remove();

› use digg
› db.stories.findOne();

› use digg;
› db.people.update({name: 'Smith'},
{'$set': {interests: []}});
› db.people.update({name: 'Smith'},
{'$push': {interests: ['chess']}});

map = function() {
emit(this.user.name, {diggs: this.diggs,
posts: 0});
}

reduce = function(key, values) {
var diggs = 0;
var posts = 0;
values.forEach(function(doc) {
diggs += doc.diggs;
posts += 1;
});
return {diggs: diggs, posts: posts};
}

db.stories.mapReduce(map, reduce, {out:
'digg_users'});

db.digg_users.find();

Design
Schema

case file 006

http://bsonspec.org

NULL NULL

NULL NULL

NULL

> db.shapes.find()

› { _id: "1", type: "c", area: 3.14, radius: 1}
› { _id: "2", type: "s", area: 4, length: 2}
› { _id: "3", type: "r", area: 10, length: 5, width: 2}

// Shapes mit radius > 0 finden
> db.shapes.find( { radius: { $gt: 0 } } )

blogs: {
author : “Johannes",
date : ISODate("2011-09-18T09:56:06.298Z"),
comments : [
{
author : “Klaus",
date : ISODate("2011-09-19T09:56:06.298Z"),
text : “toller Artikel"
}
]
}

blogs: { _id: 1000,
author: “Johannes",
date: ISODate("2011-09-18"),
comments: [ {comment : 1)} ]}

comments : { _id : 1,
blog: 1000,
author : “Klaus",
date : ISODate("2011-09-19")}

> blog = db.blogs.find({ text: "Destination Moon" });
> db.comments.find( { blog: blog._id } );

// Jedes Produkt verlinkt die IDs der Kategorien
products:
{ _id: 10, name: "Destination Moon",
category_ids: [ 20, 30 ] }

products:

// Jede Kategorie verlinkt die IDs der Produkte
categories:
{ _id: 20, name: "adventure",
product_ids: [ 10, 11, 12 ] }

categories:
{ _id: 21, name: "movie",
product_ids: [ 10 ] }

products:

// Jede Kategorie verlinkt die IDs der Produkte
categories:
{ _id: 20, name: "adventure",
product_ids: [ 10, 11, 12 ] }

categories:
{ _id: 21, name: "movie",
product_ids: [ 10 ] }

// Alle Kategorien für ein Produkt
> db.categories.find( { product_ids: 10 } )

products:

// Kategorien beinhalten keine Assoziationen
categories:
{ _id: 20,
name: "adventure"}

products:

categories:
{ _id: 20,
name: "adventure"}

// Alle Produkte für eine Kategorie
> db.products.find( { category_ids: 20 } )

products:

categories:
{ _id: 20,
name: "adventure"}

// Alle Produkte für eine Kategorie
> db.products.find( { category_ids: 20 } )

// Alle Kategorien für ein Produkt product
> product = db.products.find( { _id: some_id } )
> db.categories.find({_id: {$in : product.category_ids}})

2012-08-29 - NoSQL Bootcamp (Redis, RavenDB & MongoDB für .NET Entwickler)

More Related Content

What's hot (20)

Viewers also liked (15)

Similar to 2012-08-29 - NoSQL Bootcamp (Redis, RavenDB & MongoDB für .NET Entwickler) (20)

More from Johannes Hoppe (18)

Recently uploaded (20)

2012-08-29 - NoSQL Bootcamp (Redis, RavenDB & MongoDB für .NET Entwickler)