Download - MongoDb and Windows Azure
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About me{
"firstName": "Alessandro", "lastName": "Melchiori",
"role": "software architect @ codiceplastico", "contacts": [ {
"type": "email", "value": "[email protected]"},{ "type": "twitter", "value": "@amelchiori"
},{ "type": "blog", "value": "http://blog.codiceplastico.com/melkio"}
]}
What is #mongodb?MongoDB is
a scalable, high-performance, open source, NoSQL database,
written in C++
DEMOSetup
Data modeling• Embedding– you have “contains” relationships
between entities– you have one-to-many relationships
where the “many” objects always appear with or are viewed in the context of their parent documents
Data modeling• Referencing– when embedding would result in
duplication of data but would not provide sufficient read performance advantages to outweigh the implications of the duplication
– to represent more complex many-to-many relationships
– to model large hierarchical data sets
DEMOQueries and indexes
Replication • Database replication ensures
redundancy, backup, and automatic failover
Replication
Member 1PRIMARY
Member 3SECONDAR
Y
Member 2SECONDAR
Y
Member 1DOWN
Member 2PRIMARY
Member 1RECOVERIN
G
Member 1SECONDAR
Y
DEMOReplica set
Sharding • Sharding automatically balances
data and load across machines. Sharding provides additional write capacity by distributing the write load over a number of mongod instances.
DEMOSharding
mongosmongos
Sharding
Config 01
Config 02
Config 03
mongos
shard 01 shard 02 shard 03
client
…and Windows Azure?• Virtual machine (IaaS)• Worker role (PaaS)• MongoLab (SaaS)
DEMOWindows Azure
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