Alternative Databases
Scott MacVicar
php|tek 2009
Wednesday, 27 May 2009

Who are you?
Wednesday, 27 May 2009

History Lesson
Wednesday, 27 May 2009

First Data
Storage
Wednesday, 27 May 2009

Relational
Databases FTW!
Relational Database is Born
Wednesday, 27 May 2009

Parts of a RDBMS?
Maths SQL
Relation Table
Derived
Result Set
Relation
Tuple Row
Attribute Column
Domain Type
Wednesday, 27 May 2009

SQL Purpose
Retrieval
Manipulation
Transactions
Wednesday, 27 May 2009

SQL Fails
Complex Specification
Join Fails
Where clause
Wednesday, 27 May 2009

RDBMS through the Ages
Wednesday, 27 May 2009

RDBMs suck
Adding fields is hard
Complex
Copying / Backup database
Performance
Wednesday, 27 May 2009

Scaling?
Master Master Master
Database Database Database
App App App
Wednesday, 27 May 2009

Scaling?
Slave Master Slave
Database Database Database
App App App
Wednesday, 27 May 2009

“Write consistency is the reason RDBMS are
imploding under their own weight.”
Wednesday, 27 May 2009

Why do we use a RDBMs?
Wednesday, 27 May 2009

RDBMS Hangups
Wednesday, 27 May 2009

Save See
Secure Share
Wednesday, 27 May 2009

Memcache + BerkleyDB =
MemcacheDB
Wednesday, 27 May 2009

MemcacheDB
Memcache isn’t persistent :(
Memcache dependency
Wednesday, 27 May 2009

MemcacheDB
Simple Protocol
Tried and tested DB
Transactions
Replication
Wednesday, 27 May 2009

Using MemcacheDB
Wednesday, 27 May 2009

MemcacheDB
Save ✔
See ✔
Secure ✖
Share ✔
Wednesday, 27 May 2009

Tokyo Cabinet
Collection of types
Created for mixi.jp (Facebook of Japan)
Common API
New in PHP6, maybe PHP 5.3.1
Wednesday, 27 May 2009

Tokyo Hash Database
Constant time for most operations
Second Hash for collisions
Key values stored in a bucket array
Wednesday, 27 May 2009

Buckets!
Key Value
Key Value
Key Value
Key Value
Key Value
Key Value
Wednesday, 27 May 2009

Tokyo Cabinet Hash
Wednesday, 27 May 2009

B+ Tree
Ordered Access
Multiple Keys
Cursor
Wednesday, 27 May 2009

Fixed-Length
Access by numeric key
No keys stored
Fast
Wednesday, 27 May 2009

Fixed-Length
0
value value value value value value value
8
value value value value value value value
16
value value value value value value value
24
value value value value value value value
32
value value value value value value value
40
Wednesday, 27 May 2009

Table Database
Schema-less
Named Attributes
Indexes
Queries
Wednesday, 27 May 2009

Table Database
Primary Key name value name value name value
Primary Key name value name value name value
Primary Key name value name value name value
Wednesday, 27 May 2009

Tokyo Tyrant
Network wrapper
Speaks Memcache / HTTP
Wednesday, 27 May 2009

TokyoCabinet
Save ✔
See ✔
Secure ✔
Share ✖
Wednesday, 27 May 2009

CouchDB
REST
JavaScript
Erlang
Wednesday, 27 May 2009

CouchDB
Document Database
Replication
Map Reduce
No Indexes
Wednesday, 27 May 2009

Database Access
GET /_all_dbs
PUT /somedatabase/
DELETE /somedatabase/
GET /somedatabase/
Wednesday, 27 May 2009

Document Access
GET /somedatabase/_all_docs
PUT /somedatabase/some_docid
POST /somedatabase/
DELETE /somedatabase/some_docid
GET /somedatabase/some_docid
Wednesday, 27 May 2009

CouchDB Document
Wednesday, 27 May 2009

CouchDB Document
Wednesday, 27 May 2009

CouchDB Views
Wednesday, 27 May 2009

CouchDB Scaling
Caching
Clustering
Layering
Wednesday, 27 May 2009

CouchDB Wrappers
PHPillow - http://short.ie/buiqhu
Phly_Couch - http://short.ie/pa47gp
Wednesday, 27 May 2009

CouchDB
Save ✔
See ✔
Secure ✔
Share ✔
Wednesday, 27 May 2009

Amazon SimpleDB
XML Rest
Application
Wednesday, 27 May 2009

Amazon SimpleDB
Amazon Web Service
Cloudy
Rest / XML
Wednesday, 27 May 2009

SimpleDB
1 billion attributes
5 seconds execution
1024 byte values
Wednesday, 27 May 2009

SimpleDB Set
Wednesday, 27 May 2009

SimpleDB Query
Wednesday, 27 May 2009

SimpleDB API
Officially Amazon API - http://short.ie/apx6c3
Tarzan-AWS - http://short.ie/54rucx
Wednesday, 27 May 2009

SimpleDB
Save ✔
See ✔
Secure ✔
Share ✔
Wednesday, 27 May 2009

Questions?
http://talks.macvicar.net
http://couchdb.apache.org
http://aws.amazon.com
http://memcachedb.org
Wednesday, 27 May 2009