PostgreSQLからMongoDBへ

PostgreSQLMongoDB CTO @basuke

not onlybut also

http://www.assiston.co.jp/•• ~1000• 30~80 PV

•••• Google

••••

MongoDB ( )

• PostgreSQL 7.4 => 8.1• PHP 4.3 => 4.4 => 5.1•

• MongoDB 1.6.3• PHP 5.3• Lithium••

Lithium• http://lithify.me/• 5.3• CakePHP• MongoDB / CouchDB• ↑ RDB w

PHP MongoDB • Lithium • pecl mongo •

Item::ﬁnd(all, array( conditions => array( category => $tag, visible => true, ), order => array( position=>DESC, id => DESC), ));

$item_collection->ﬁnd(array( category => $tag, visible => true, )).sort(array( position=>-1, id => -1), ));

• mongoimport / mongoexport • JSON • JSON• PHP••

• mongoimport -d assiston -c items --drop --ﬁle items.dump {"no" : 123456, "items" : [{"at" : 1285679232000}}

Mongo Extended JSON• http://www.mongodb.org/display/DOCS/Mongo +Extended+JSON• $binary, $date, $oid• $date milliseconds • PHP 32bit int

• • PHP JSON• TIMESTAMP json_encode • 2010-12-10 17:20:21 => 1291969221 • 1291969221 sec => "||date:1291969221000||" • JSON • "||date:1291969221000||" => Date(1291969221000)

• PHP w • Python OK • pgmongo

1: atomic•• ••

CREATE TABLE ORDERS ( id SERIAL PRIMARY KEY, total INTEGER NOT NULL, { ... no: integer,); total: integer, items: [CREATE TABLE ORDER_ITEMS ( { price: integer, ...}, id SERIAL PRIMARY KEY, ] order_id INTEGER ... REFERS TO ORDERS, } price INTEGER NOT NULL, ...);

2:• ObjectID•• function(seqname) { return db.sequences.ﬁndAndModify({ query:{_id:seqname}, update: {$inc: {val:1}}, upsert: true, new: true}).val; }• db.system.js • db.eval("return sequence(abc)")

3: mongo on github• https://github.com/mongodb/mongo/tree/ master/jstests• MongoDB JavaScript

Thank you.http://basuke.com/

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PostgreSQLからMongoDBへ

by Yosuke Suzuki on Dec 12, 2010

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PostgreSQLからMongoDBへ — Presentation Transcript