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un service de base de données multi-modèles globalement distribuée

L’information n’est pas une connaissance. La seule source de connaissance est l’expérience - Albert Einstein

Agenda

Le Cosmos, c’est quoi ?

• Histoire de la physique

• Anaximandre, Newton, Einstein

• La physique relativiste

• relativité restreinte

• relativité générale

• La physique quantique

• La théorie du Big bang

• Les trous noirs et les ondes gravitanionnelles

Non j’déconne…

…Quoi que…

Pourquoi a ton besoin de

Cosmos DB?

Aucun problème ne peut être résolu sans changer le niveau de conscience qui l’a engendré – Albert Einstein

Cosmos DB is

designed for itWelcome to

fast data

explosion

1 exabyte (EB) = 1,000,000,000,000,000,000

Cosmos DB is designed for big data growth

This is What a Typical Activity of a Modern App Looks Like

“Les espèces qui survivent ne sont pas les espèces les plus fortes, ni les plus intelligentes, mais celles qui s’adaptent le mieux aux changements.”

Qu’est ce que Cosmos DB?

Si vous ne pouvez pas l’expliquer simplement, c’est que vous ne l’avez pas suffisamment bien compris – Albert Einstein

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

DemoComment créer une base de données CosmosDB

Cosmos DB – Plus en détails

La logique te mènera de A à Z; L’imagination te mènera partout – Albert Einstein

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

Globally-distribute data around the world

Turn-key global distribution

Automatically replicate all your data around the world – across more regions than Amazon and Google combined

Global distribution from the ground-up

Turnkey Global distribution

Transparent and automatic multi-region

replication

• Associate any number of geographical regions with

your database account, at any time

• Policy based geo-fencing

Multi-homing APIs

• All endpoints are logical, by default

• Apps don’t need to be redeployed during regional

failover

• Apps can also access physical endpoints if needed

Designed for high availability

• Allows for dynamically setting priorities to regions

• Test the end-to-end availability for the entire app

(beyond just the database) by simulating regional

disasters (via API)

• Support for both policy based (manual and automatic) failover

Foundational Azure service – available in all Azure regions by default

DemoComment distribuer sa BD sur la planète

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

Elastic Scaleout

STORAGE

THROUGHPUT

Resource Governed Stack• Replica density, COGS and SLA, all

depend on stringent resource governance across the entire stack

• Request Unit (RU)• Rate based currency • Normalized across various

access methods• Available for second (RU/s)

granularity

• All engine operations are finely calibrated

• Automated perf and RG runs every four hours

• System designed to independently scale storage and

throughput

• Transparent server side partition management and

routing

• Automatically indexed SSD storage

• Automatic global distribution of data across any

number of Azure regions

• Optionally evict old data using built-in support for TTL

Elastically scalable storage

Transaction

data

Web/content data

Social data/Machine-generated data

KB

Data variety/complexity

Data

vo

lum

e

Log

10 s

cale

115

Elastically scale throughput from 10 to 100s of

millions of requests/sec across multiple regions

Customers pay by the hour for the provisioned

throughput

Transparent server side partition management and

routing

Support for requests/sec for different workloads

9 PM PST

Less throughput

More throughput

More throughput

Less throughput

11 PM PST

Pro

visi

oned

req

uest

/ s

ec

Time

12000000

10000000

8000000

6000000

4000000

2000000

Nov 2016 Dec 2016

Black Friday

Hourly throughput (request/sec)

Elastically scalable throughput, globally

DemoScale-Out

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

Guaranteed low latency – Value to Customer

Relevance/Value

Timems sec min hours Day 1 Day 2 Weeks 1

Event occurs

where Cosmos DB fits

La distinction entre le passé, le présent, le futur n’est qu’une illusion, aussi tenace soit-elle – Albert Einstein

Si on arrêtait le temps, combien de temps on l’arrêterait ?

Reads and writes served from local region

Guaranteed millisecond latency worldwide

Write optimized, latch-free database engine

Automatically indexed SSD storage Synchronous and automatic indexing at sustained ingestion rates

No schema or index management needed

No schema versioning needed

No schema migration needed

All of this is highly relevant for rapidly evolving apps

in a globally distributed setup

Guaranteed Low Latency

Reads (1KB) Indexed writes (1KB)

Read < 2 ms

Writes < 6 ms

Read < 10 ms

Writes < 15 ms

99%50%

Azure Cosmos DBDatabase that enables apps to “beat the speed of light”!

Beam of light = 80ms

Azure Cosmos DB < 10ms

Latency guarantees world-wide (< 10 ms Read, < 15ms Write for 99% of requests)

Customer Application Example

Customer Application Example

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

Programmable Data Consistency

Strong consistency

High latency

Eventual

consistency, Low

latency

Choices of Consistency

Choose from five defined consistency levels for low latency and high availability

Strong Bounded-stateless Session Consistent prefix Eventual

Most real-life applications do not fall into these two extremes

Choices of Consistency

5 well-defined consistency levels for low latency and high availability

Consistency Level Guarantees

Strong Linearizability

Bounded Staleness Reads lag behind writes by k prefixes or t interval

SessionMonotonic reads, monotonic writes, read-your-writes,

write-follows-reads

Consistent PrefixUpdates returned are some prefix of all the

updates, with no gaps

Eventual Eventually consistent

4

18

73

2 3

Production Usage (%)

Strong

BoundedStalenessSession

ConsistentPrefixEventual

Azure Cosmos DB

01

Strong

Bounded

Staleness

Session

Consistent

Prefix

Eventual

5 well-defined consistency models

Clear Tradeoffs

• Latency

• Availability

• Throughput

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

Latency @ 99th

percentile SLA

Throughput SLA

Consistency SLA

Availability SLA

2

4

3

1

Industry-Leading, Comprehensive SLAs6

High Availability

Performance Latency

Performance Throughput

Data Consistency

Only database with comprehensive SLAs across 4 dimensions

Microsoft Azure

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

Who Wants to Store Their Data Like This?

Why Multi-Model?

Transaction

data

Web/content data

Social data/Machine-generated data

KB

Data variety/complexity

Data

vo

lum

e

Log

10 s

cale

115

Who Wants to Have 3-5 Different Backend Databases?

Native Support for Multiple Data Models

• Database engine operates on atom-record-sequence (ARS) based type system– All data models are efficiently translated to ARS

• API and wire protocols are supported via extensible modules

• Instance of a given data model can be materialized as trees

• Graph, documents, key-value, column-family, … more to come

KEY-VALUE COLUMN-FAMILY DOCUMENT GRAPH

How To Do Multi-Model

Using it as Documents

Using it as Graph

Column-familyDocument

Graph

Turnkey global distribution

Elastic scale out

of storage & throughput

Guaranteed low latency at the 99th percentile

Comprehensive SLAs

Five well-defined consistency models

Table API

Key-value

Azure Cosmos DBA globally distributed, massively scalable, multi-model database service

What Does our API Strategy Enable? • No recompilation needed!

• Better SLAs, lower TCO, enterprise grade security and amazing capabilities

without requiring to change the app code or data access layer

• Leverage the existing OSS toolchain and ecosystem and development IT

expertise

• Lift and shift from on-premises to cloud

• No vendor lock-in

• Symmetric on-premises and cloud database development – Use popular on-premises database (e.g. Cassandra) on premises and Cosmos DB on Azure

Native Support for Multiple APIs, formats & Wire Protocols

TCP (SSL), HTTPS

Cosmos DB Database Engine

SQL JavaScript MongoDB Tables Gremlin Cassandra

Query IL Database Runtime

Java .NET

Native Cosmos DB client drivers

Java

.NETRuby

…

Native MongoDB client drivers

…

……

…

…

HBase …

Azure Cosmos DB Change FeedThis feed can be used to listen for modifications to data within the collection and perform a variety of actions.

Change log

Customer Use Cases with Cosmos DB

Cosmos DB By Industries (Our Customers)

Retail

Manufacturing

Government / Edu

Automotive/IoT

Financial Services

Professional Services

Jet.com flies throughbusy retail peaks

Black Friday, Cyber Monday, and other high traffic periods threaten service quality

• Immediate inventory updates

• Real-time change feeds

• Low latency for swift processing

Retail and e-commerce

Personalized services score big with Real Madrid fans

450M global supporters want direct engagement with the football club

• Tunable consistency settings for rapid insight

• Customized experiences through digital

interactions

• High app performance worldwide

Personalization

Next Games RPG springs to life with Azure Cosmos DB

Need for a DB that to seamlessly respond to massive scale and performance demands

• Multi-player game play with low latency

• Instant capacity scaling from launch onward

• Uninterrupted global user experience

Gaming

Next steps + Please Reach Out to the Product Team• Getting Started

• cosmosdb.com• portal.azure.com• aka.ms/cosmosdb• Downloadable service emulator (aka.ms/CosmosDB-emulator)• Try Cosmos DB – free time-limited Cosmos DB experience

• Technical Overview -> https://azure.microsoft.com/en-us/blog/a-technical-overview-of-azure-cosmos-db/

• Schema Agnostic Indexing, VLDB 2015 -> http://www.vldb.org/pvldb/vol8/p1668-shukla.pdf

• Follow #CosmosDB on Twitter• @azurecosmosdb• @rimmanehme• @dharmashukla

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