1. @ IPRUG
"It is a scalable, high-performance, open source,
Document-oriented database. Written in C++”
What is mongoDB?

2. @ IPRUG
What is a Document
Oriented Database?

3. @ IPRUG
{"IPRUG": {
"tagline": "The source of all things Ruby in Suffolk",
"website": "http://www.iprug.org",
"members": [
{"name": "MrJaba", "role": "foolhardy organizer",
"presentations" : ["higher order ruby", "websockets"]},
{"name": "KerryB", "role": "foolhardy presenter"}
]
}
}
A Document

4. @ IPRUG
1. Install Daemon
Download and install the mongod - the database daemon itself
2. Install Driver
gem install mongo
gem install bson_ext (optional for extra performance)
How do you use it? Part
1.

5. @ IPRUG
How do you use it? Part
2.
1. Connect:
db = Mongo::Connection.new.db("mydb")
2. Insert a document:
coll = db.collection("RUGS")
iprug = { "IPRUG" => {"tagline" => "The source of all things Ruby
in Suffolk", "website" => "iprug.org" } }
coll.insert(iprug)

6. @ IPRUG
How do you use it? Part
3.3. Updating:
iprug["tagline"] = "Suffolk haz Ruby!"
coll.update({"_id" => iprug["_id"]}, iprug)

7. @ IPRUG
How do you use it? Part
4.4. Find all:
coll.find()
5. Conditions:
coll.find("tagline" => "Suffolk haz Ruby!")
6. Range Queries:
coll.find("value" => {"$gt" => 20, "$lte" => 30})
7. Regex queries:
coll.find( {"tagline" => /^Suffolk/} )

8. @ IPRUG
ORM Tools?
* MongoMapper
* Mongoid
* Mongomatic
* MongoDoc
* MongoModel
* Candy

9. @ IPRUG
Is it In
Memory?

10. @ IPRUG
Can it be
written to disk?

11. @ IPRUG
What if my server
crashes?

12. @ IPRUG
So I'm going to lose all
my data?

13. @ IPRUG
What about Replication?

14. @ IPRUG
Insert Rows/Sec: 2,376
Retrieve Row/Sec: 1,047
Find All/Sec: 3,458
What about
Performance?

15. @ IPRUG
Why would I use this
over MySql?

16. @ IPRUG
Why Wouldn't I use MongoDb?

17. @ IPRUG
References
Durability:
http://www.mikealrogers.com/2010/07/mongodb-performance-durability/
Their Rebuttal:
http://blog.mongodb.org/post/381927266/what-about-durability
Durability Guide:
http://www.thebuzzmedia.com/mongodb-single-server-data-durability-guide/
Performance:
http://www.eggheadcafe.com/tutorials/aspnet/6f573869-c8eb-40c3-9946-2f61e0163966/mongodb-vs-sql-server-basic-speed-tests.aspx
http://prajwal-tuladhar.net.np/2009/11/15/500/mongodbs-performance-as-compared-to-others-esp-couchdb/
NoSQL Overview:
http://bjclark.me/2009/08/nosql-if-only-it-was-that-easy/