Introduzione a Couchbase
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The document provides an introduction to NoSQL and Couchbase databases. It discusses why NoSQL databases are needed due to trends like big data, many users, and cloud/SaaS applications. These trends require more flexible and scalable data models compared to relational databases. NoSQL databases like Couchbase use a document model where each record is a standalone JSON document rather than rows in tables. This model is more flexible and allows scaling out horizontally. The document provides examples of how user, item, and blog data could be stored in Couchbase compared to relational databases.
![Database+a+Documento+
≒ Ogni(record(e(un(documento(a(se(
stante(
≒ Ogni(documento(ha(una(stru<ura(
indipendente(
≒ I(documenJ(possono(essere(complessi(
≒ Richiedono(una(chiave(unica(
≒ I(daJ(sono(immagazzinaJ(in(formato(
JSON,(XML(o(simili(
≒ Il(contenuto(puo(essere(indicizzato(e(
interrogato(
≒ O鍖rono(sharding(automaJco(e(
repliche(
{"
UUID:"21f7f8de0805105b89086
Time:" 2011004001T13:01:02.42
Server:" A2223E,
Calling" Server:" A2213W,
Type:" E100,
Initiating" User:" dsallings@spy.net,
Details:"
{
IP:"10.1.1.22,
API:" InsertDVDQueueItem,
Trace:" cleansed,
Tags:"
[
SERVER,"
US0West,"
API
]
}
}](https://image.slidesharecdn.com/introduzioneacouchbase-131213175554-phpapp02/85/Introduzione-a-Couchbase-20-320.jpg)
![Esempio+Blog++
Diviso+su+piu+DocumenC+
{"
{ !
UUID :"21f7f8de08051 05b89 086
Time:" 2011 004001T13:01:02.42
_id: Coucbase_Hello_World,!
Server:"
author: A2223E, !
dborkar,
Calling" Server:" A2213W,
type: E100 ,
Type:" post!
Initiating" Us er:" ds allings
title: Hello World,! @s py.net,
D etails :"
format: markdown, !
{
body:IP:"10.1.1.22,
Hello from [Couchbase](
API:" Ins ertDVD QueueItem,
http://couchbase.com)., !
Trace:" cleans ed,
html:Tags :"
<p>Hello from <a href=http: !
[
comments:[!
SERVER,"
US0Wes t,"
!
comment1_Couchbase_Hello_world!
API
!
]!
COMMENTI+
]
}!
}
}
{!
BLOG+
_id: comment1_Couchbase_Hello_World,!
format: markdown, !
body:Awesome post! !
}+
{"
UUID :" 2 1 f7 f8 d e0 8 0 5 1 05 b 8
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Time:" 2 0 1 1 0 0 4 00 1 T1 3 :0 1 :0 2
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Introduzione a Couchbase
- 5. MolC+UtenC+ ≒ UtenC+da+tuMo+il+mondo,+sempre+connessi+ 2 35+ 1 ++ Miliardi+ Popolazione+ online+ ++ Miliardi+di+ore+ Miliardo+ Ore+passate+ online+ UtenC+ Smartphone+ h<p://www.goBgulf.com/blog/onlineBJme( h<p://business.Jme.com/2012/02/14/oneBbillionBsmartphonesBbyB2016BhereBcomesBtheBmobileBarmsBrace/( E+necessario+un+database+facile+da+scalare+
- 13. MySQL+o+NoSQL?+
- 16. Architettura moderna di unapplicazione web Application Scales Out Just add more commodity web servers Database Scales Up Get a bigger, more complex server Nota((I(database(relazionali(sono(una(tecnologia(eccellente(ma(non(per(questo(uso.(
- 17. I database NoSQL utilizzano la stessa logica dellapplicazione Application Scales Out Just add more commodity web servers NoSQL(Database(Servers( Database Scales Out Just add more commodity data servers Scalando orizzontalmente si riducono I costi e aumentano le performance
- 20. Database+a+Documento+ ≒ Ogni(record(e(un(documento(a(se( stante( ≒ Ogni(documento(ha(una(stru<ura( indipendente( ≒ I(documenJ(possono(essere(complessi( ≒ Richiedono(una(chiave(unica( ≒ I(daJ(sono(immagazzinaJ(in(formato( JSON,(XML(o(simili( ≒ Il(contenuto(puo(essere(indicizzato(e( interrogato( ≒ O鍖rono(sharding(automaJco(e( repliche( {" UUID:"21f7f8de0805105b89086 Time:" 2011004001T13:01:02.42 Server:" A2223E, Calling" Server:" A2213W, Type:" E100, Initiating" User:" dsallings@spy.net, Details:" { IP:"10.1.1.22, API:" InsertDVDQueueItem, Trace:" cleansed, Tags:" [ SERVER," US0West," API ] } }
- 24. Esempio+Blog++ Diviso+su+piu+DocumenC+ {" { ! UUID :"21f7f8de08051 05b89 086 Time:" 2011 004001T13:01:02.42 _id: Coucbase_Hello_World,! Server:" author: A2223E, ! dborkar, Calling" Server:" A2213W, type: E100 , Type:" post! Initiating" Us er:" ds allings title: Hello World,! @s py.net, D etails :" format: markdown, ! { body:IP:"10.1.1.22, Hello from [Couchbase]( API:" Ins ertDVD QueueItem, http://couchbase.com)., ! Trace:" cleans ed, html:Tags :" <p>Hello from <a href=http: ! [ comments:[! SERVER," US0Wes t," ! comment1_Couchbase_Hello_world! API ! ]! COMMENTI+ ] }! } } {! BLOG+ _id: comment1_Couchbase_Hello_World,! format: markdown, ! body:Awesome post! ! }+ {" UUID :" 2 1 f7 f8 d e0 8 0 5 1 05 b 8 9 08 6 Time:" 2 0 1 1 0 0 4 00 1 T1 3 :0 1 :0 2 .4 2 Server:" A2 2 2 3 E, Callin g" Server:" A2 2 1 3 W , Typ e:" E1 0 0 , In itiatin g" Us er:" d s allin gs @s p y.n et, D etails :" { IP :" 1 0 .1 .1 .2 2 , AP I:" In s ertD VD Qu eu eItem, Trace:" clean s ed , Tags :" [ SERVER," US0Wes t," AP I ] } }
- 31. Couchbase+Open+Source+ ≒ Il(principale(database(NoSQL( distribuito( ≒ Supporta(sia(le(applicazioni( chiaveBvalore(che(a(documento( ≒ Tun(I(componenJ(sono( disponibili(con(licenza(Apache+ 2.0+Public+License+ ≒ Disponibile(come(pacche<o( sooware(sia(nella(versione( Community(che(in(quella( Enterprise( Couchbase Open Source Project
- 32. +
- 34. Di鍖erenze+Principali+RispeMo+ad+Altri+ Database+NoSQL+ ≒ Perme<e(un(alJssimo(numero(di( connessioni(contemporanee( (fondamentale(per(applicazioni( web(interanve)( ≒ Nessun(locks( ≒ Cache(naJva+ ≒ Hash(parJJoning((non(range)(((( !(non(si(formano(hotspots( ≒ Sharding(automaJco(
- 39. Aggiungere+Nodi+al+Cluster+ APP+SERVER+1+ APP+SERVER+2+ COUCHBASE+Client+Library+ + CLUSTER+MAP+ + COUCHBASE+Client+Library+ + CLUSTER+MAP+ + READ/WRITE/UPDATE+ + + SERVER+1+ ACTIVE+ Doc+5+ Doc+ + + SERVER+2+ + + ACTIVE+ Doc+4+ Doc+ READ/WRITE/UPDATE+ SERVER+3+ ACTIVE+ Doc+1+ + + SERVER+4+ ACTIVE+ + + SERVER+5+ ACTIVE+ Doc+ Doc+2+ Doc+ Doc+7+ Doc+ Doc+3+ Doc+ Doc+9+ Doc+ Doc+8+ Doc+ Doc+6+ Doc+ REPLICA+ REPLICA+ REPLICA+ REPLICA+ Doc+4+ Doc+ Doc+6+ Doc+ Doc+7+ Doc+ Doc+1+ Doc+ Doc+3+ Doc+ Doc+9+ Doc+ Doc+8+ Doc+ Doc+2+ Doc+ Doc+5+ Doc+ COUCHBASE+SERVER++CLUSTER+ User(Con鍖gured(Replica(Count(=(1( REPLICA+ ≒ Due+servers+aggiunC+ con+un+solo+click+ ≒ I+documenC+vengono+ automaCcamente+ ribilanciaC+aMraverso+il+ cluster+ Col(minimo( spostamento(di( documenJ(possibile( ≒ La+mappa+del+cluster+ viene+aggiornata+ ≒ Lapplicazione+ora+e+ supportata+da+un+ numero+maggiore+di+ servers.+
- 40. Caduta+di+un+Nodo+ APP+SERVER+1+ APP+SERVER+2+ COUCHBASE+Client+Library+ + CLUSTER+MAP+ + COUCHBASE+Client+Library+ + CLUSTER+MAP+ + ≒ I+server+della+app+accedono+ ai+daC+ + + SERVER+1+ ACTIVE+ Doc+5+ Doc+2+ Doc+ Doc+ + + SERVER+2+ + + ACTIVE+ Doc+4+ Doc+7+ Doc+1+ ACTIVE+ Doc+1+ Doc+ REPLICA+ Doc+10+ Doc+ Doc+ + + SERVER+4+ ACTIVE+ Doc+9+ Doc+ Doc+8+ + + SERVER+5+ ACTIVE+ Doc+6+ Doc+ Doc+ REPLICA+ REPLICA+ Doc+4+ Doc+ Doc+6+ Doc+ Doc+7+ Doc+ Doc+5+ Doc+ Doc+ ≒ Le+richieste+della+app+ora+si+ dirigono+sul+server+ appropriato+ Doc+1+ Doc+ Doc+3+ Doc+ Doc+9+ Doc+ Doc+2+ COUCHBASE+SERVER++CLUSTER+ User(Con鍖gured(Replica(Count(=(1( REPLICA+ Doc+10+ ≒ Le+richieste+al+Server+3+ falliscono+ ≒ Il+Cluster+idenC鍖ca+che+un+ nodo+e+o鍖ine+ Doc+3+ REPLICA+ Doc+ SERVER+3+ Doc+8+ Doc+ Le(repliche(vengono(promosse(ad( anve(e(la(mappa(del(cluster(viene( aggiornata( ≒ Il+tuMo+e+seguito+dal+ ribilanciamento+dei+daC+
- 46. CaraMerisCche+dei+DaC+ ≒ StruMura+de鍖nita+dallutente+(TwiMer+feeds)+ ≒ Serve+supporto+per+crescita+esponenziale+(Apps+virali)+ ≒ StruMura+dei+daC+non+omogenea+ ≒ Ce+necessita+di+cambiare+struMura+frequentemente+ ≒ Lunghezza+dei+documenC+variabile+ ≒ StruMura+dei+daC+gerarchica+ + Couchbase+e+la+scelta+ideale+ +
- 47. RequisiC+di+Performance+ ≒ Latenze+estremamente+basse+(es.+1millisecondo)+ ≒ Tra鍖ci+elevaC+(es.+200000+ops/sec)+ ≒ Numero+di+utenC+elevato+ ≒ Domanda+non+prevenCvabile+con+crescite+improvvise+ ≒ Ce+predominanza+di+accesso+direMo+ai+documenC+ ≒ Alto+tra鍖co+in+leMura+e+scriMura+ + Couchbase+e+la+scelta+ideale+ +
- 48. Applicazioni+Comuni+ Social+Gaming+ + ≒ Couchbase( conJene(I(daJ(sugli( utenJ(e(I(giochi( ≒ Esempi(clienJ:( Zynga,(Tapjoy,( Ubisoo,(Tencent( + Pubblicita+Online+ Informazioni+di+Sessione+ + ≒ Couchbase(conJene( info(sugli(utenJ(per( un(accesso(veloce( ≒ Esempi(clienJ:(AOL,( Mediamind,( Convertro(( + ≒ Couchbase(come(database( chiaveBvalore( ≒ Esempi(clienJ:(Concur,(Sabre( + Metadata+e+ContenuC+ + + Apps+Mobili+ + + ≒ Couchbase(conJene(daJ( su(utenJ(e(contenuJ( ≒ Couchbase(come(database( chiaveBvalore( + + Cache+ad+Alta+Disponibilita+ + ≒ Couchbase(uJlizzato(come(livello(di(cache( ≒ Esempi(clienJ:(Orbitz( ≒ Esempi(clienJ:(McGraw(Hill( + ≒ Esempi(clienJ:(Tunewiki( ≒ Esempi(clienJ:(Kobo,( PlayJka(( + ≒ Couchbase(insieme(ad( ElasJcsearch( Pro鍖li+UtenC+ + Aggregazione+DaC+ + ≒ Couchbase(aggrega(I(daJ(dai(social( media( ≒ Esempi(clienJ:(Sambacloud( +
- 52. QuesCons?+
- 53. Demo+