MongoDB Isn't Water

To start: Two Ideas. Thursday, February 4, 2010

1 Thursday, February 4, 2010

There are these two young fish swimming along and they happen to meet an older fish swimming the other way, who nods at them and says "Morning, boys. How's the water?" And the two young fish swim on for a bit, and then eventually one of them looks over at the other and goes "What the hell is water?" This is a standard requirement of US commencement speeches, the deployment of didactic little parable-ish stories....The point of the fish story is merely that the most obvious, important realities are often the ones that are hardest to see and talk about. - David Foster Wallace Thursday, February 4, 2010

Thursday, February 4, 2010

2 Thursday, February 4, 2010

“Ruby is designed to be human-oriented. It reduces the burden of programming. It tries to push jobs back to machines. You can accomplish more tasks with less work, in smaller yet readable code.” - Matz Thursday, February 4, 2010

“MongoDB is designed to be human-oriented. It reduces the burden of programming. It tries to push jobs back to machines. You can accomplish more tasks with less work, in smaller yet readable code.” - Banker (after Matz) Thursday, February 4, 2010

Which leads to... Thursday, February 4, 2010

MongoDB Isn’t Water Thursday, February 4, 2010

MongoDB Isn’t Water (It’s for rubyists and other human-oriented devs) Thursday, February 4, 2010

document-oriented schema-free high-performance built for scale Thursday, February 4, 2010

Demo Thursday, February 4, 2010

MongoDB Drivers & Ruby to MongoDB Thursday, February 4, 2010

How we Insert * * an anatomy lesson Thursday, February 4, 2010

1. ObjectID generation Thursday, February 4, 2010

1. ObjectID generation 4b6857a0 timestamp Thursday, February 4, 2010

1. ObjectID generation 4b6857a0 7613c3 timestamp machine id Thursday, February 4, 2010

1. ObjectID generation 4b6857a0 7613c3 6709 timestamp machine id process id Thursday, February 4, 2010

1. ObjectID generation 4b6857a0 7613c3 6709 4426b2 timestamp machine id process id counter Thursday, February 4, 2010

2. BSON serialization Type-rich, eﬃcient, general-purpose. Thursday, February 4, 2010

2. BSON serialization Type-rich, eﬃcient, general-purpose. The language of MongoDB. Thursday, February 4, 2010

3. Send on socket Fire and forget. Thursday, February 4, 2010

3. Send on socket Fire and forget. Safe mode for extra assurance Thursday, February 4, 2010

Dynamic Queries * * like sql Thursday, February 4, 2010

b-tree Indexes * * up to 40 per collection Thursday, February 4, 2010

Atomic & In-place Updates * * and upserts, too Thursday, February 4, 2010

Elegant Operators * * document keywords Thursday, February 4, 2010

for queries $ne $in $nin $mod $all $size $exists Thursday, February 4, 2010

for updates $inc $set $push $pushAll $pop $pull $pullAll Thursday, February 4, 2010

Aggregation * *and other cool features Thursday, February 4, 2010

group map-reduce Thursday, February 4, 2010

Data Modeling & Design Patterns Thursday, February 4, 2010

Simulating a ﬂexible schema Thursday, February 4, 2010

Simulating a ﬂexible schema What’s the join like? Thursday, February 4, 2010

Simulating a ﬂexible schema What’s the join like? Can we reason about it? Thursday, February 4, 2010

{:sku => ‘637636’, :name => ‘Linen tailored pant’, :about => [{:title => ‘fabric & care’, :content => [‘Dry clean’, ‘Imported’]}, {:title => ‘overview’, :content => [‘Tailored ﬁt’, ‘Yarn dyed’]} ] }* * Simplified, but not far-fetched. Thursday, February 4, 2010

One to y Many Many Many Man any Many Many Many any Many Many Many M Many Many Many Many Thursday, February 4, 2010

comments has_many votes comments comments votes comment_id user_id Thursday, February 4, 2010

document comments Thursday, February 4, 2010

post has_many comments post comments post_id user_id tree attrs Thursday, February 4, 2010

1. embedded document {:title => ‘a life unexamined’, :comments => [ {:author => ‘socrates’, :text => ‘is not worthwhile’}, {:author => ‘epicurus’, :text => ‘leads to bliss’} ] } Thursday, February 4, 2010

2. embedded & nested {:comments => [ {:author => ‘socrates’, :text => ‘is not worthwhile’, :comments => [ {:author => ‘epicurus’, :text => ‘leads to bliss’}]}, ] } Thursday, February 4, 2010

3. normalized [{:author => ‘socrates’, :text => ‘is not worthwhile’, :post_id => ‘4c4fa6d000002’}, {:author => ‘epicurus’, :text => ‘leads to bliss’, :post_id => ‘4c4fa6d000002’} ] Thursday, February 4, 2010

Embed relationships tightly-bound concepts tradeoﬀs Break out ﬁrst-class docs independent concepts Thursday, February 4, 2010

any Many Many Many any Many Many Many M Many Many Many Many to y Many Many Many Man any Many Many Many ny Many Many Many M Many Many Many Many Thursday, February 4, 2010

products & categories products join product_id category_id categories Thursday, February 4, 2010

Performance, Scalability, & A Few Internals Thursday, February 4, 2010

master-slave replication failover, read-scaling mongod (m) mongod (s) mongod (s) mongod (s) Thursday, February 4, 2010

client Thursday, February 4, 2010

mongos client Thursday, February 4, 2010

Shards m m m m m m m m m mongos client Thursday, February 4, 2010

Shards m m m Conﬁg m m m m m m Servers mongod mongod mongod mongos client Thursday, February 4, 2010

Shards m m m ... Conﬁg m m m m m m Servers mongod mongod mongod mongos ... mongos client Thursday, February 4, 2010

Use Cases & Production Deployments Thursday, February 4, 2010

sourceforge.net Thursday, February 4, 2010

businesinsider.com Thursday, February 4, 2010

github.com Thursday, February 4, 2010

harmonyapp.com Thursday, February 4, 2010

Exercises & What’s Not Water Thursday, February 4, 2010

Capped Collections GridFS Thursday, February 4, 2010

Capped Collections GridFS MongoMapper Mongoid Mongodoc Thursday, February 4, 2010

Capped Collections GridFS MongoMapper Mongoid Mongodoc Pre-compiled binaries Thorough documentation Multi-language support Thursday, February 4, 2010

Quiz time: Which is these is water? Thursday, February 4, 2010

{:sku => ‘637636’, :name => ‘Linen tailored pant’, :about => [{:title => ‘fabric & care’, :content => [‘Dry clean’, ‘Imported’]}, {:title => ‘overview’, :content => [‘Tailored ﬁt’, ‘Yarn dyed’]} ] }* Thursday, February 4, 2010

rake db:migrate Thursday, February 4, 2010

credits http://www.ﬂickr.com/photos/noodlesgirly/70340880 http://www.ﬂickr.com/photos/shindotv/3835365163/ http://www.squareamerica.com/ib.htm Thursday, February 4, 2010

google groups: mongodb-user freenode: #mongodb docs & download: mongodb.org twitter.com/hwaet kyle@10gen.com inspired by slideshare.net/timanglade/tin Thursday, February 4, 2010

http://blog.nosqlfan.com	2657
http://nosql.mypopescu.com	799
http://www.mongodb.org	121
http://blog.dt27.cn	50
http://www.slideshare.net	32
http://static.slidesharecdn.com	3
http://xianguo.com	2
http://translate.googleusercontent.com	2
http://www.twylah.com	1
http://control.blog.sina.com.cn	1
http://feed.feedsky.com	1

MongoDB Isn't Water

by Kyle Banker on Feb 04, 2010

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MongoDB Isn’t Water — Presentation Transcript