Introduction to MongoDB Presentation

8/3/2019 Introduction to MongoDB Presentation

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Kristina Chodorow

[email protected]

Introduction to MongoDB


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Application

PHP

Linux

DatabaseApache


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Application

PHP

Windows

IIS


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Application

PHP

Linux

Apache


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Application

PHP

Linux

Apache


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Application

PHP

Linux

Apache


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Application

PHP

Linux

Apache

The world's most

popular open source

database


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Application

PHP

Linux

Apache

The world's most

advanced open source

database


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databases

contain tables

contain rows

server


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databases

contain tables

contain rows

schema

server


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databases

contain tables

contain rows

joins

schema

server


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databases

contain tables

contain rows

joins

schema

server


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Application

Perl

Linux

Apache


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getting started


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www.mongodb.org


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$ mysqld


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$ mongod


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$ mysql


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$ mongo


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$ mongo

MongoDB shell version 1.5.5url: test

connecting to: test

type "help" for help>


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$ mongo


connecting to: test

type "help" for help> db


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$ mongo


connecting to: test


test

>


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$ mongo


connecting to: test


test

>


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$ mongo


connecting to: test


test

> table = db.foo


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server


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databases

server


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databases

contain tables

server


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databases

contain tables

server


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databases

contain tables

server


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databases

contain rows

server

contain tables


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databases

contain rows

server

contain tables


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databases

contain rows

server

contain tables


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databases

contain rows

server

contain tables

schema


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databases

contain rows

server

contain tables

schema

joins


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databases

contain collections

contain documents

server


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$ mongo

MongoDB shell version 1.5.5

url: testconnecting to: test

type "help" for help

> db

test

> collection = db.foo


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$ mongo


url: testconnecting to: test


> db

test

> collection = db.foo


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> doc = {

... "name" : "kristina",

... "contact info" : {

... "twitter" : "@kchodorow",

... "email" : "[email protected]"

... },

... "friends" : 400232,

... "pic" : BinData(...)

... "member since" : new Date()}


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> db.foo.insert(doc)


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> db.foo.findOne({"name" : "kristina"});


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> db.foo.findOne({"name" : "kristina"})

> db.foo.findOne({... "contact.twitter" : "@kchodorow"})


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> db.foo.find({

... "member since" : {

... "$gt" : yesterday,

... "$lt" : today

... }})


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> db.foo.find({

... "member since" : {

... "$gt" : yesterday,

... "$lt" : today

... }}).sort({friends : 1}).limit(10).... skip(100)


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db.people.update(

{name : "kristina"},


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db.people.update(


{$set :


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db.people.update(


{$set :

{"contact.website" :

"snailinaturtleneck.com"

}});


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> db.pageviews.update(

{url : "example.com"},

{$inc : {pageviews : 1}},

true)


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some features


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I suddenly have a deep

love for stored procedures


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I suddenly have a deep

love for stored procedures


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> db.system.js.insert({

"_id" : "x",

"value" : 3});

> db.system.js.insert({

"_id" : "y",

"value" : 4});

> db.eval("return x+y")


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> db.system.js.insert({_id : "log",

... value : function(msg, level) {

... var date = "[" + new Date() + "] ";

... var lvl = level ? level+" " : "";

... print(date + lvl + msg);

... }})


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> db.eval("log('all your base are

belong to us', 'FATAL');");


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> db.eval("log('all your base are

belong to us', 'FATAL');");

[Fri May 19 18:34:57] FATAL all your

base are belong to us


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J J J

J J J

J J J


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capped collections


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indexes


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geospatial indexes


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MapReduce


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what did we leave out?


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I say, we should get a

mainframe, old chap.

Harumph.


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are you practicing safe

data storage?


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Insert this.

Okay, got it.

Phew, my data's safe.


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Write this to disk

All over it!

I know better than

he does, I'll just

let this sit in a

buffer for a while.


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? I have no idea what

you're talking about.


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trust no one!

...trust a bunch of ones. Mostly.


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prod1.example.com

prod2.example.com


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prod1.example.com

prod2.example.com


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prod1.example.com

prod2.example.com


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prod1.example.com

prod2.example.com


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prod1.example.com

prod2.example.com


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prod1.example.com

prod2.example.com


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prod1.example.com ?

prod2.example.com


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prod2.example.com

prod1.example.com

?


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prod2.example.com

prod1.example.com

?


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prod2.example.com

prod1.example.com


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prod2.example.com

prod1.example.com


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primary

secondary

passive

secondary


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secondary

passive

secondary

My priority is 2

My priority is 1


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primary

passive

secondary


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secondary

passive

secondary

I'm 5 minutes

behind the masterI'm 3 seconds

behind the master


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secondary

passive

primary


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passive

I'll still takereads.


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okay


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?


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make sure two

slaves have this


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all set


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scaling


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(rdbms)


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U - ZK - OA - E F - J P - T


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U - ZK - OA - E F - J P - T

I want Mark through

Sarah.


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U - ZK - OA - E F - J P - T


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U - ZK - OA - E F - J P - T


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U - ZK - OA - E F - J P - T

Insert Linus


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U - ZK - OA - E F - J P - T

$ mongo


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$ mongo


url: test

connecting to: test


>

$ mongo


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$ mongo


url: test

connecting to: test


> db.foo.insert({x:1})


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thank you!

@kchodorow

http://www.snailinaturtleneck.com

Introduction to MongoDB Presentation

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