This document provides an overview of building an app using Perl and MongoDB. It discusses what MongoDB is and its key features. It describes the modules needed from CPAN to interface with MongoDB from Perl. It outlines the structure of a sample "Library" app to demonstrate CRUD operations on books, authors, and other entities. The document walks through building this app and interacting with MongoDB documents and collections. It provides resources to learn more about MongoDB and the MongoDB Perl API.

1. Building Your App:
Perl & MongoDB
Mike Friedman (friedo)
Perl Engineer & Evangelist, 10gen
http://friedo.com
Perl Oasis 2013
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2. 10gen, the MongoDB Company
http://www.10gen.com http://www.mongodb.org
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3. What is MongoDB?
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4. What is MongoDB?
✤ Document Oriented Database
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5. What is MongoDB?
✤ Document Oriented Database
✤ Open Source
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6. What is MongoDB?
✤ Document Oriented Database
✤ Open Source
✤ High Performance
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7. What is MongoDB?
✤ Document Oriented Database
✤ Open Source
✤ High Performance
✤ Horizontally Scalable
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8. What is MongoDB?
✤ Document Oriented Database
✤ Open Source
✤ High Performance
✤ Horizontally Scalable
✤ Full Featured
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9. What We Will Build:
✤ “Library” - A demo application
✤ Users
✤ Books
✤ Authors
✤ Publishers
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10. What We Will Need:
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11. What We Will Need:
✤ MongoDB
✤ http://www.mongodb.org/downloads
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12. What We Will Need:
✤ MongoDB
✤ http://www.mongodb.org/downloads
✤ CPAN Modules:
✤ https://metacpan.org/module/Mojolicious::Lite
✤ https://metacpan.org/module/MongoDB
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13. Inside the MongoDB CPAN
Distribution
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14. Inside the MongoDB CPAN
Distribution
✤ MongoDB::MongoClient
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15. Inside the MongoDB CPAN
Distribution
✤ MongoDB::MongoClient
✤ new in version 0.502.
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16. Inside the MongoDB CPAN
Distribution
✤ MongoDB::MongoClient
✤ new in version 0.502.
✤ “Safe” (write-acknowledged) by default
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17. Inside the MongoDB CPAN
Distribution
✤ MongoDB::MongoClient
✤ new in version 0.502.
✤ “Safe” (write-acknowledged) by default
✤ Encapsulates connection and server info
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18. Inside the MongoDB CPAN
Distribution
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19. Inside the MongoDB CPAN
Distribution
✤ MongoDB::Database
✤ Represents a database (namespace) on the MongoDB server
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20. Inside the MongoDB CPAN
Distribution
✤ MongoDB::Database
✤ Represents a database (namespace) on the MongoDB server
✤ MongoDB::Collection
✤ Represents a collection (table? kinda) in a database
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21. Inside the MongoDB CPAN
Distribution
✤ MongoDB::Database
✤ Represents a database (namespace) on the MongoDB server
✤ MongoDB::Collection
✤ Represents a collection (table? kinda) in a database
✤ MongoDB::Cursor
✤ Retrieves documents (rows? kinda) from a collection
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22. MongoDB Documents
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23. MongoDB Documents
✤ Documents live in Collections
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24. MongoDB Documents
✤ Documents live in Collections
✤ Documents have no pre-defined schema
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25. MongoDB Documents
✤ Documents live in Collections
✤ Documents have no pre-defined schema
✤ Documents have key-value pairs, like Perl hashes
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26. MongoDB Documents
✤ Documents live in Collections
✤ Documents have no pre-defined schema
✤ Documents have key-value pairs, like Perl hashes
✤ Documents can have nested structure (arrays and other documents),
like Perl hashes
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27. MongoDB Documents
✤ Documents live in Collections
✤ Documents have no pre-defined schema
✤ Documents have key-value pairs, like Perl hashes
✤ Documents can have nested structure (arrays and other documents),
like Perl hashes
✤ Documents look something like JSON
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28. MongoDB Documents
{
'title': 'Fellowship of the Ring, The',
'author': ObjectId("507ffbb1d94ccab2da652597"),
'language': 'English',
'genre': ['fantasy', 'adventure'],
'publication': {
'name': 'George Allen & Unwin',
'location': 'London',
'date': new Date('21 July 1954'),
}
}
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29. Class Delegation Structure
Documents
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30. Class Delegation Structure
Documents MongoDB::Cursor
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31. Class Delegation Structure
Documents MongoDB::Cursor
has()
MongoDB::Collection
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32. Class Delegation Structure
Documents MongoDB::Cursor
has()
MongoDB::Collection
has()
MongoDB::Database
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33. Class Delegation Structure
Documents MongoDB::Cursor
has()
MongoDB::Collection
has()
MongoDB::Database
has()
MongoDB::MongoClient
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34. Class Delegation Structure
Documents MongoDB::Cursor Application
has()
MongoDB::Collection
has()
MongoDB::Database
has()
MongoDB::MongoClient
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35. Let’s Build It!
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36. Building the Library
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37. Building the Library
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38. Building the Library
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39. Building the Library
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40. Building the Library
Remember the Genres?
{
'title': 'Fellowship of the Ring, The',
'author': ObjectId("507ffbb1d94ccab2da652597"),
'language': 'English',
'genre': ['fantasy', 'adventure'],
'publication': {
'name': 'George Allen & Unwin',
'location': 'London',
'date': new Date('21 July 1954'),
}
}
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41. Building the Library
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42. Building the Library
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43. Where to go from here?
✤ Learn more about MongoDB:
✤ http://docs.mongodb.org/manual/
✤ Learn more about the MongoDB Perl API
✤ https://metacpan.org/module/MongoDB::Tutorial
✤ Hack on the Library demo app
✤ https://github.com/friedo/mongo-library
✤ Add/edit authors?
✤ Edit books?
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44. What’s on CPAN?
✤ ODM’s (Object Document Mappers)
✤ Like ORMs but simpler
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45. What’s on CPAN?
✤ Mongoose:
✤ Based on MongoMapper
from Ruby.
✤ MongoDB Docs -->
Moose objects.
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46. What’s on CPAN?
✤ MongoDBI
✤ Very Perlish
✤ Moose-like Syntax
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47. What’s on CPAN?
✤ MongoDB::Async
✤ Tracks upstream MongoDB Distribution
✤ Uses Coro and libev for asynchronous queries
✤ (Mostly) drop-in replacement for MongoDB driver
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48. Questions
https://github.com/friedo/mongo-library
http://docs.mongodb.org/manual/
MongoDB::Tutorial
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