Ruby and Rails MongoDB Berlin 2010

on ruby and r
ails

mongo berlin 2010

jan krutisch <jan@krutisch.de>
http://jan.krutisch.de/

Donnerstag, 7. Oktober 2010

I


Web Developer

I


Web Developer

github.com/halfbyte

I


Web Developer

github.com/halfbyte

I
jan.krutisch.de


Web Developer

github.com/halfbyte

Tinkerer
I
jan.krutisch.de


Web Developer

github.com/halfbyte

Tinkerer
I
jan.krutisch.de

twitter.com/halfbyte


ruby


Find examples here:
http://github.com/halfbyte/mongo_ruby_examples


Basic driver usage


gem install mongo bson_ext


init


getting connections


@connection = Mongo::Connection.new


@connection = Mongo::Connection.new(
'localhost',
27017,
:pool_size => 5,
:timeout => 20
)


@connection = Mongo::Connection.from_uri(
"mongodb://localhost:27017/test"
)


Choose a database.


@connection.database_names
#=> ["admin", "local"]


@db = @connection['test']


@db = @connection.db('test')


collections


@collection = @db['books']


@collection = @db.collection('books')


subcollections


@collection = @db['books.reviews']


@collection = @db['books']['reviews']


CRUD


Create Read Update Delete


insert


doc = {
:text => "You can observe a lot just by watching.",
:from => "Yogi Berra",
:created_at => Time.now
}
@db['quotes'].insert(doc)


doc = {
}
@db['quotes'].save(doc)


safe (using getlasterror)


doc = {
}
@db['quotes'].save(doc, :safe => true)


how about getting back
an id?


doc = {
}
id = @db['quotes'].save(doc)


upsert


doc = @db['quotes'].find_one(id)

doc[:from] = "Yogi Berra, famous baseball player"

@db['quotes'].save(doc)


@db['quotes'].update(
{:_id => doc['_id']},
{
:tags => ['baseball', 'wit']
}
)


atomic updates


@db['quotes'].update(
{"from" => "Yogi Berra"},
{"$inc" => {"reads" => 1 } }
)


$inc $addToSet
$set $pop
$unset $pull
$push $pullAll
$pushAll $


@db['people'].update(
{"tags" => "cool"},
"$addToSet" => {"tags" => 'froody'},
:multi => true
)


{"tags" => "cool"},
{
"$addToSet" => {
"tags" => {
"$each" => ['froody', 'hoopy']
}
}
},
:safe => true,
:multi => true
)


{"tags" => "cool"},
{"$set" => {"tags.$" => "fresh"}},
:safe => true,
:multi => true
)


@db['people'].remove


@db['numbers'].remove(
{"$lt" => 30},
:safe => true
)


all


@db['quotes'].find.each do |row|
puts row.inspect
end


one


row = @db['quotes'].find_one


exact query


@db['quotes'].find(:from => "Yogi Berra")


more queries


100.times do |i|
db['numbers'].insert({"i" => i})
end


db['numbers'].find("i" => {"$lt" => 2})


$lt <
$gt >
$lte <=
$gte >=
$ne !=


@db['people'].find(
:tags => {
"$in" => ['cool', 'weird']
}
)


obj = {
"_id"=>BSON::ObjectID('4c706af16261040680000369'),
"name"=>"Vernon Kreiger",
"address"=>{
"street"=>"536 Haleigh Locks",
"city"=>"Port Kiannahaven",
"zip"=>"80730-0214",
"country"=>"Fakistan"
},
"tags"=>["cool", "weird"]
}


$in IN (2,3,4)
$nin NOT IN
$all [2,3] ~ [1,2,3]


$mod yah, RLY
$size okay
$exists NOT NULL
$type huh?


Let‘s go deep.


@db['people'].find("address.city" => "Berlin")


/stand back/


@db['people'].find("address.city" => /haven/)


I‘m in ur database,
executin ur javascript


@db['numbers'].find("$where" => "this.i < 2")


boolsh


not


@db['numbers'].find(
"i" => {
"$not" => {"$lt" => 97}
}
)


and


"i" => {
"$lt" => 52,
"$gt" => 48
}
)


or


"$or" => [
{
"i" => { "$lt" => 2 }
},
{
"i" => { "$gt" => 97 }
}
]
)


Sorting


@db['people'].find().sort("address.street")


@db['people'].find().sort("address.street", :asc)


@db['people'].find().sort(
"address.street",
Mongo::ASCENDING
)


Pagination


@db['numbers'].find.sort("i").limit(10)


@db['numbers'].find.sort("i").limit(10).skip(50)


Aggregation


Countin‘ Bizness


@db['numbers'].find.count


Distinct


@db['people'].distinct('tags')


Group


Poor mans map/reduce


@db['people'].group(
['created_at'],
{},
{:tags => {}},
reduce,
finalize
)


function(doc, prev) {
for(i in doc.tags) {
if (doc.tags[i] in prev.tags) {
prev.tags[doc.tags[i]]++
} else {
prev.tags[doc.tags[i]] =1
}
}
}


{"created_at"=>2010-09-19 22:00:00 UTC, "tags"=>{"foo"=>11.0, "dumb"=>12.0, "stupid"=>7.0, "bar"=>7.0, "cool"=>14.0, "weird"=>17.0}}
{"created_at"=>2010-09-20 22:00:00 UTC, "tags"=>{"dumb"=>11.0, "stupid"=>5.0, "foo"=>10.0, "cool"=>8.0, "weird"=>9.0, "bar"=>15.0}}
{"created_at"=>2010-09-22 22:00:00 UTC, "tags"=>{"weird"=>15.0, "bar"=>9.0, "stupid"=>17.0, "cool"=>11.0, "dumb"=>10.0, "foo"=>12.0}}
{"created_at"=>2010-09-15 22:00:00 UTC, "tags"=>{"foo"=>11.0, "weird"=>7.0, "stupid"=>10.0, "cool"=>11.0, "bar"=>5.0, "dumb"=>8.0}}
{"created_at"=>2010-09-25 22:00:00 UTC, "tags"=>{"dumb"=>11.0, "weird"=>14.0, "cool"=>8.0, "foo"=>21.0, "bar"=>11.0, "stupid"=>13.0}}
{"created_at"=>2010-09-28 22:00:00 UTC, "tags"=>{"cool"=>11.0, "dumb"=>16.0, "stupid"=>11.0, "weird"=>15.0, "foo"=>9.0, "bar"=>16.0}}
{"created_at"=>2010-09-10 22:00:00 UTC, "tags"=>{"dumb"=>15.0, "weird"=>9.0, "bar"=>8.0, "cool"=>14.0, "stupid"=>11.0, "foo"=>11.0}}
{"created_at"=>2010-09-03 22:00:00 UTC, "tags"=>{"weird"=>14.0, "dumb"=>15.0, "stupid"=>11.0, "foo"=>16.0, "bar"=>20.0, "cool"=>10.0}}
{"created_at"=>2010-09-21 22:00:00 UTC, "tags"=>{"weird"=>15.0, "cool"=>14.0, "foo"=>13.0, "stupid"=>6.0, "bar"=>11.0, "dumb"=>9.0}}
{"created_at"=>2010-09-23 22:00:00 UTC, "tags"=>{"weird"=>15.0, "stupid"=>15.0, "dumb"=>15.0, "foo"=>16.0, "cool"=>10.0, "bar"=>11.0}}
{"created_at"=>2010-09-29 22:00:00 UTC, "tags"=>{"bar"=>9.0, "cool"=>14.0, "weird"=>16.0, "foo"=>8.0, "dumb"=>9.0, "stupid"=>12.0}}
{"created_at"=>2010-09-27 22:00:00 UTC, "tags"=>{"cool"=>13.0, "dumb"=>10.0, "stupid"=>12.0, "bar"=>8.0, "foo"=>16.0, "weird"=>13.0}}
{"created_at"=>2010-09-04 22:00:00 UTC, "tags"=>{"cool"=>11.0, "bar"=>9.0, "stupid"=>6.0, "weird"=>11.0, "dumb"=>8.0, "foo"=>11.0}}
{"created_at"=>2010-09-08 22:00:00 UTC, "tags"=>{"stupid"=>12.0, "dumb"=>11.0, "cool"=>15.0, "foo"=>11.0, "bar"=>9.0, "weird"=>8.0}}
{"created_at"=>2010-10-02 22:00:00 UTC, "tags"=>{"bar"=>8.0, "dumb"=>8.0, "cool"=>10.0, "foo"=>10.0, "stupid"=>8.0, "weird"=>6.0}}
{"created_at"=>2010-09-24 22:00:00 UTC, "tags"=>{"foo"=>13.0, "bar"=>12.0, "stupid"=>15.0, "weird"=>17.0, "dumb"=>7.0, "cool"=>10.0}}
{"created_at"=>2010-09-30 22:00:00 UTC, "tags"=>{"bar"=>10.0, "cool"=>6.0, "stupid"=>14.0, "weird"=>9.0, "dumb"=>12.0, "foo"=>19.0}}
{"created_at"=>2010-09-05 22:00:00 UTC, "tags"=>{"dumb"=>12.0, "foo"=>19.0, "weird"=>8.0, "stupid"=>8.0, "bar"=>7.0, "cool"=>10.0}}
{"created_at"=>2010-09-17 22:00:00 UTC, "tags"=>{"weird"=>13.0, "bar"=>14.0, "dumb"=>12.0, "foo"=>12.0, "stupid"=>10.0, "cool"=>9.0}}
{"created_at"=>2010-09-18 22:00:00 UTC, "tags"=>{"dumb"=>8.0, "cool"=>11.0, "foo"=>6.0, "bar"=>12.0, "weird"=>7.0, "stupid"=>6.0}}
{"created_at"=>2010-09-09 22:00:00 UTC, "tags"=>{"weird"=>11.0, "dumb"=>9.0, "foo"=>6.0, "bar"=>11.0, "cool"=>11.0, "stupid"=>6.0}}
{"created_at"=>2010-09-13 22:00:00 UTC, "tags"=>{"dumb"=>19.0, "stupid"=>9.0, "weird"=>12.0, "cool"=>11.0, "bar"=>10.0, "foo"=>15.0}}
{"created_at"=>2010-09-16 22:00:00 UTC, "tags"=>{"bar"=>6.0, "weird"=>8.0, "dumb"=>9.0, "cool"=>11.0, "stupid"=>17.0, "foo"=>15.0}}
{"created_at"=>2010-09-11 22:00:00 UTC, "tags"=>{"foo"=>10.0, "weird"=>9.0, "bar"=>8.0, "cool"=>4.0, "dumb"=>8.0, "stupid"=>9.0}}
{"created_at"=>2010-09-26 22:00:00 UTC, "tags"=>{"dumb"=>15.0, "weird"=>6.0, "stupid"=>15.0, "bar"=>10.0, "foo"=>13.0, "cool"=>15.0}}
{"created_at"=>2010-10-01 22:00:00 UTC, "tags"=>{"cool"=>7.0, "weird"=>11.0, "stupid"=>11.0, "bar"=>14.0, "foo"=>12.0, "dumb"=>11.0}}
{"created_at"=>2010-09-12 22:00:00 UTC, "tags"=>{"bar"=>7.0, "weird"=>12.0, "stupid"=>11.0, "cool"=>10.0, "foo"=>11.0, "dumb"=>9.0}}
{"created_at"=>2010-09-14 22:00:00 UTC, "tags"=>{"dumb"=>8.0, "foo"=>15.0, "cool"=>15.0, "stupid"=>15.0, "bar"=>7.0, "weird"=>14.0}}
{"created_at"=>2010-09-07 22:00:00 UTC, "tags"=>{"dumb"=>10.0, "cool"=>7.0, "foo"=>14.0, "weird"=>15.0, "bar"=>11.0, "stupid"=>7.0}}
{"created_at"=>2010-09-06 22:00:00 UTC, "tags"=>{"dumb"=>7.0, "bar"=>11.0, "cool"=>16.0, "weird"=>14.0, "foo"=>12.0, "stupid"=>6.0}}


{"created_at"=>2010-09-19 22:00:00 UTC, "tags"=>{"foo"=>11.0, "dumb"=>12.0, "stupid"=>7.0, "bar"=>7.0, "cool"=>14.0, "weird"=>17.0}}
{"created_at"=>2010-09-20 22:00:00 UTC, "tags"=>{"dumb"=>11.0, "stupid"=>5.0, "foo"=>10.0, "cool"=>8.0, "weird"=>9.0, "bar"=>15.0}}
{"created_at"=>2010-09-22 22:00:00 UTC, "tags"=>{"weird"=>15.0, "bar"=>9.0, "stupid"=>17.0, "cool"=>11.0, "dumb"=>10.0, "foo"=>12.0}}
{"created_at"=>2010-09-15 22:00:00 UTC, "tags"=>{"foo"=>11.0, "weird"=>7.0, "stupid"=>10.0, "cool"=>11.0, "bar"=>5.0, "dumb"=>8.0}}
{"created_at"=>2010-09-25 22:00:00 UTC, "tags"=>{"dumb"=>11.0, "weird"=>14.0, "cool"=>8.0, "foo"=>21.0, "bar"=>11.0, "stupid"=>13.0}}
{"created_at"=>2010-09-28 22:00:00 UTC, "tags"=>{"cool"=>11.0, "dumb"=>16.0, "stupid"=>11.0, "weird"=>15.0, "foo"=>9.0, "bar"=>16.0}}
{"created_at"=>2010-09-10 22:00:00 UTC, "tags"=>{"dumb"=>15.0, "weird"=>9.0, "bar"=>8.0, "cool"=>14.0, "stupid"=>11.0, "foo"=>11.0}}
{"created_at"=>2010-09-03 22:00:00 UTC, "tags" => {
"tags"=>{"weird"=>14.0, "dumb"=>15.0, "stupid"=>11.0, "foo"=>16.0, "bar"=>20.0, "cool"=>10.0}}
{"created_at"=>2010-09-21 22:00:00 UTC, "tags"=>{"weird"=>15.0, "cool"=>14.0, "foo"=>13.0, "stupid"=>6.0, "bar"=>11.0, "dumb"=>9.0}}
{"created_at"=>2010-09-23
{"created_at"=>2010-09-29
22:00:00
22:00:00
UTC,
UTC,
"foo" => 11.0,
"tags"=>{"weird"=>15.0, "stupid"=>15.0, "dumb"=>15.0, "foo"=>16.0, "cool"=>10.0, "bar"=>11.0}}
"tags"=>{"bar"=>9.0, "cool"=>14.0, "weird"=>16.0, "foo"=>8.0, "dumb"=>9.0, "stupid"=>12.0}}
{"created_at"=>2010-09-27
{"created_at"=>2010-09-04
22:00:00
22:00:00
UTC,
UTC,
"dumb" => 12.0,
"tags"=>{"cool"=>13.0, "dumb"=>10.0, "stupid"=>12.0, "bar"=>8.0, "foo"=>16.0, "weird"=>13.0}}
"tags"=>{"cool"=>11.0, "bar"=>9.0, "stupid"=>6.0, "weird"=>11.0, "dumb"=>8.0, "foo"=>11.0}}
{"created_at"=>2010-09-08
{"created_at"=>2010-10-02
22:00:00
22:00:00
UTC,
UTC,
"stupid" => 7.0,
"tags"=>{"stupid"=>12.0, "dumb"=>11.0, "cool"=>15.0, "foo"=>11.0, "bar"=>9.0, "weird"=>8.0}}
"tags"=>{"bar"=>8.0, "dumb"=>8.0, "cool"=>10.0, "foo"=>10.0, "stupid"=>8.0, "weird"=>6.0}}
{"created_at"=>2010-09-24
{"created_at"=>2010-09-30
22:00:00
22:00:00
UTC,
UTC,
"bar" => 7.0,
"tags"=>{"foo"=>13.0, "bar"=>12.0, "stupid"=>15.0, "weird"=>17.0, "dumb"=>7.0, "cool"=>10.0}}
"tags"=>{"bar"=>10.0, "cool"=>6.0, "stupid"=>14.0, "weird"=>9.0, "dumb"=>12.0, "foo"=>19.0}}
{"created_at"=>2010-09-05
{"created_at"=>2010-09-17
22:00:00
22:00:00
UTC,
UTC,
"cool" => 14.0,
"tags"=>{"dumb"=>12.0, "foo"=>19.0, "weird"=>8.0, "stupid"=>8.0, "bar"=>7.0, "cool"=>10.0}}
"tags"=>{"weird"=>13.0, "bar"=>14.0, "dumb"=>12.0, "foo"=>12.0, "stupid"=>10.0, "cool"=>9.0}}
{"created_at"=>2010-09-18
{"created_at"=>2010-09-09
22:00:00
22:00:00
UTC,
UTC, "weird" => 17.0
"tags"=>{"dumb"=>8.0, "cool"=>11.0, "foo"=>6.0, "bar"=>12.0, "weird"=>7.0, "stupid"=>6.0}}
"tags"=>{"weird"=>11.0, "dumb"=>9.0, "foo"=>6.0, "bar"=>11.0, "cool"=>11.0, "stupid"=>6.0}}
{"created_at"=>2010-09-13
{"created_at"=>2010-09-16
22:00:00
22:00:00
UTC,
UTC, }
"tags"=>{"dumb"=>19.0, "stupid"=>9.0, "weird"=>12.0, "cool"=>11.0, "bar"=>10.0, "foo"=>15.0}}
"tags"=>{"bar"=>6.0, "weird"=>8.0, "dumb"=>9.0, "cool"=>11.0, "stupid"=>17.0, "foo"=>15.0}}
{"created_at"=>2010-09-11 22:00:00 UTC, "tags"=>{"foo"=>10.0, "weird"=>9.0, "bar"=>8.0, "cool"=>4.0, "dumb"=>8.0, "stupid"=>9.0}}
{"created_at"=>2010-09-26 22:00:00 UTC, "tags"=>{"dumb"=>15.0, "weird"=>6.0, "stupid"=>15.0, "bar"=>10.0, "foo"=>13.0, "cool"=>15.0}}
{"created_at"=>2010-10-01 22:00:00 UTC, "tags"=>{"cool"=>7.0, "weird"=>11.0, "stupid"=>11.0, "bar"=>14.0, "foo"=>12.0, "dumb"=>11.0}}
{"created_at"=>2010-09-12 22:00:00 UTC, "tags"=>{"bar"=>7.0, "weird"=>12.0, "stupid"=>11.0, "cool"=>10.0, "foo"=>11.0, "dumb"=>9.0}}
{"created_at"=>2010-09-14 22:00:00 UTC, "tags"=>{"dumb"=>8.0, "foo"=>15.0, "cool"=>15.0, "stupid"=>15.0, "bar"=>7.0, "weird"=>14.0}}
{"created_at"=>2010-09-07 22:00:00 UTC, "tags"=>{"dumb"=>10.0, "cool"=>7.0, "foo"=>14.0, "weird"=>15.0, "bar"=>11.0, "stupid"=>7.0}}
{"created_at"=>2010-09-06 22:00:00 UTC, "tags"=>{"dumb"=>7.0, "bar"=>11.0, "cool"=>16.0, "weird"=>14.0, "foo"=>12.0, "stupid"=>6.0}}


function(prev) {
var mostPopular = 0;
for(i in prev.tags) {
if(prev.tags[i] > mostPopular) {
prev.tag = i;
prev.count = prev.tags[i];
mostPopular = prev.tags[i];
}
}
delete prev.tags
}


{"created_at"=>2010-09-27 22:00:00 UTC, "tag"=>"stupid", "count"=>18.0}
{"created_at"=>2010-09-12 22:00:00 UTC, "tag"=>"cool", "count"=>11.0}
{"created_at"=>2010-09-03 22:00:00 UTC, "tag"=>"foo", "count"=>15.0}
{"created_at"=>2010-09-24 22:00:00 UTC, "tag"=>"cool", "count"=>11.0}


Map / Reduce


collection = @db['people'].map_reduce(
map, reduce
)
collection.find()


function() {
this.tags.forEach(function(z) {
emit(z, {count: 1});
});
}


function(key, values) {
var total = 0;
values.forEach(function(v) { total += v.count });
return {count: total}
}


Indexes


db['people'].create_index("tags")

@db['people'].create_index(
[["tags", Mongo::ASCENDING]]
)

db['people'].drop_index("tags_1")

db['people'].drop_indexes

db['people'].index_information


Geospatial stuff


@db['people'].create_index(
[["latlng", Mongo::GEO2D]]
)


@db['people'].find(
"latlng" => {"$near" => [53.593978, 10.107380]}
)


GridFS usage


grid = Mongo::Grid.new(@db)

id = grid.put("You can put Strings in here",
:filename => 'test.txt')

file = grid.get(id)

file.filename
file.read

grid.delete(id)

grid.put(
File.open("/Users/jankrutisch/Dropbox/Photos/IMGP8989.jpg")
)


fs = Mongo::GridFileSystem.new(db)

fs.open("test.txt", "w") do |f|
f.write "You can put stuff in here"
end

fs.open("test.txt", "r") do |f|
puts f.read
end

fs.delete("test.txt")


Capped collections


@db.create_collection('capped_numbers',
:capped => true,
:max => 50
)

@db.create_collection('capped_numbers',
:capped => true,
:size => 1024 * 64
)


explain


@db['people'].find(
"address.city" => /haven/
).explain


{
"cursor"=>"BasicCursor",
"nscanned"=>1000,
"nscannedObjects"=>1000,
"n"=>39, "millis"=>2,
"indexBounds"=>{},
"allPlans"=>[
{"cursor"=>"BasicCursor", "indexBounds"=>{}}
]
}


{
"cursor"=>"BtreeCursor address.city_1 multi",
"nscanned"=>1000,
"nscannedObjects"=>39,
"n"=>39, "millis"=>1,
"indexBounds"=>{
"address.city"=>[["", {}], [/haven/, /haven/]]
},
"allPlans"=>[
{
"cursor"=>"BtreeCursor address.city_1 multi",
"indexBounds"=>{
"address.city"=>[["", {}], [/haven/, /haven/]]
}
}
]
}


misc commands


@db.stats

{
"collections"=>4,
"objects"=>1011,
"avgObjSize"=>244.6330365974283,
"dataSize"=>247324,
"storageSize"=>345600,
"numExtents"=>6,
"indexes"=>3,
"indexSize"=>114688,
"fileSize"=>201326592,
"ok"=>1.0
}


@db.add_stored_function(
"tag_size",
"function(obj) {return obj.tags.length}"
)

@db['people'].find(
"$where" => 'tag_size(this) === 2'
)


Libraries


mongo_mapper


John Nunemaker
@jnunemaker


is in production


documentation?


how to


rails initializer


# config/initializers/mongo_mapper.rb
mongo_config = YAML.load_file(
File.join(Rails.root, 'config','mongomapper.yml')
)
MongoMapper.setup(mongo_config, Rails.env)


a simple example


MongoMapper.connection = @connection
MongoMapper.database = "test"

class Quote
include MongoMapper::Document
key :from
key :text
key :views, Integer
timestamps!
end


ﬁnders


Quote.where(:from => 'Yogi Berra').all

Quote.where(:from => 'Yogi Berra').limit(5).sort(:from.desc).all


embedded docs


class Person
key :name
one :address
key :tags, Array
end

class Address
key :street
key :city
key :country
key :zip
end


person = Person.first
address = Person.first.address


scopes


class Person
scope :tagged, lambda { |tag| where(:tags.in => [tag]) }
end

puts Person.tagged('cool').first.inspect


new website coming soon


new website coming soon
U
l re ad y s a id t h at
n f o rt u n ate l y I‘ve a ug us t
@ FrOS CON i n A


mongoid


Durran Jordan
(of Hashrocket)


Two major versions


1.x (1.9.x) targeting
Rails 2.3.x


2.x (2.0beta) targeting
Rails 3.0


Good documentation


File.open(File.join(RAILS_ROOT, 'config/mongodb.yml'), 'r') do |f|
@settings = YAML.load(f)[RAILS_ENV]
end

Mongoid::Config.instance.from_hash(@settings)


class Quote
include Mongoid::Document
include Mongoid::Timestamps
field :from
field :text
field :views, :type => Integer
end


Quote.where(:from => 'Yogi Berra').all

Quote.where(:from => 'Yogi Berra').limit(5).order_by(:from.desc).all


class Person
field :name
embeds_one :address
field :tags, :type => Array
end

class Address
field :street
field :city
field :country
field :zip
end


More features


mongoid tries to be
clever


(using the „dirty“ ﬂags)


(it‘s probably better to
bypass the ODM
sometimes)


GridFS


external libraries for
both


mongo_mapper > grip


mongoid > mongoid_grid


validations


both through ActiveModel
or validatable (Rails <3)


Other noteworthy
libraries


The „ORM“ variant


mongodoc

http://github.com/leshill/mongodoc


mongo-record

http://github.com/mongodb/mongo-record

mongomodel

http://github.com/spohlenz/mongomodel

mongomatic

http://github.com/benmyles/mongomatic

Queues


mongo_queue

http://github.com/Skiz/mongo_queue

mongo_queue
L as t c omm i t o n g i t h ub.c om i n M a rch .. .

http://github.com/Skiz/mongo_queue

resque-mongo

http://github.com/ctrochalakis/resque-mongo

resque-mongo L as t c omm i t o n g i t h ub.c om i n Ja n u a r y.. .

http://github.com/ctrochalakis/resque-mongo

Misc


em-mongo

http://github.com/bcg/em-mongo

dm-mongo-adapter

http://github.com/solnic/dm-mongo-adapter

questions? injuries?


thanks for listening.
‣ http://www.mongodb.org/
‣ http://www.mongoid.org/
‣ http://github.com/jnunemaker/mongo_mapper
‣ http://github.com/halfbyte/mongo_ruby_examples

‣ jan@krutisch.de
‣ http://jan.krutisch.de/
‣ http://github.com/halfbyte/
‣ http://twitter.com/halfbyte
‣ http://www.mindmatters.de/


Ruby and Rails MongoDB Berlin 2010

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