The document introduces Alessandro Melchiori, a software architect at codiceplastico. It provides his name, role, and contact information including email, Twitter handle, and blog URL.

2. Grazie a
Sponsor

3. About me
{
"firstName": "Alessandro",
"lastName": "Melchiori",
"role": "software architect @ codiceplastico",
"contacts": [
{
"type": "email",
"value": "alessandro@codiceplastico.com"
},
{
"type": "twitter",
"value": "@amelchiori"
},
{
"type": "blog",
"value": "http://blog.codiceplastico.com/melkio"
}
]
}

5. What is #mongodb?
MongoDB is
a scalable, high-performance,
open source, NoSQL database,
written in C++

6. Setup
DEMO

7. 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

8. 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

9. Queries and indexes
DEMO

10. Replication
• Database replication ensures redundancy,
backup, and automatic failover

11. Replication
Member 1 Member 2
RECOVERING
SECONDARY
DOWN
PRIMARY PRIMARY
SECONDARY
Member 3
SECONDARY

12. Replica set
DEMO

13. 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.

14. Sharding
DEMO

15. Sharding
client mongos
mongos
mongos
shard 01 shard 02 shard 03
Config 01
Config 02
Config 03

16. …and Windows Azure?
• Virtual machine (IaaS)
• Worker role (PaaS)
• MongoLab (SaaS)

17. Windows Azure
DEMO

18. Q&A
Tutto il materiale di questa sessione su
http://www.communitydays.it/
#CDays13