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Scalable Transactions in the Cloud

Matthew Fowler, NT/e

CloudTranCloudSave

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?

• And the answer is– platform for mainstream Java developers– to use IMDG– for scalable, commercial applications– without worry and minimal hassle– for commercial advantage

• It's a lump of middleware– built on, adding value to GigaSpaces

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2001

• WebLogic/J2EE specialisation

• One week training course– 4-point architecture for dummies

• Messed-up architecture– revenue down

• Automating server-side applications– J2EE/EJB– Spring/Hibernate

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3-5...5-10...10-20...1,000,000 • Tracy's story: the path of successful apps

– Database– Caching– In-memory Data Grid

• The 50,000 club• Application scale drivers

– Mobile phone growth, iPhone Apps– Micropayments– e-commerce continued growth

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Get an edge with performance

Please wait

“Latency really matters ... 100ms of latency costs

1% in sales.” Amazon

.....................“... almost half of visitors will abandon a site if they perceive a page or feature

takes longer than 2 seconds to load. ”

GetElastic

“An extra 0.5 seconds in

search page generation time

dropped traffic by 20%.” Google

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6.5m, x10yrs, $400bn/yr

• Mainstream Java developers– 6.5m– most have 5-10 years experience– 50 million man-years experience

• Plain old application development market– $400bn/year

• Can they build an IMDG application?– How can IMDG go mainstream?

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Explaining it to your Mom / Boss

IMDG - SOR

Persistent Storage

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Explaining it to a techie

1. System of Record in IMDG. Keep DB for• warehouse apps/BI• sleeping at night.

2. Catching the money:– ACID transactions

– throughput, scalability, bullet-proof reliability – distributed, data + messaging

3. ORM - Object references, not foreign keys.Easy to program. Entity groups for performance.

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In-Memory Data Bases - Are You Crazy?

• What's it worth:– Loss of sales, traffic - 5% vulnerable, saved by

speed of IMDG

• For $100m/year co:– $5m/year revenue for good behaviour– Customer/order/product data - 2million * 16Kb– 8 servers in grid for 32GB live data

• 8 servers isn't a lot• Worth doing the numbers!

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Low Reliability

Complicated Programming

Unintended Consequencesof

Unknowing

Distributed Transactions

Fear and loathing ...

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, 1, 2, 3, ...

• Other alternatives– forget transactions, forget databases

• Dan's the Man

• GoogleApps on V2 last we heard

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How is it possible?

Distributed Cloud Transactions

• Grid connected– Helland's get out clause

• System of Record is in the grid– No voting - 1PC not 2PC

• Commit to backed-up memory• Leverage the GigaSpaces platform

– SBA/Entity Groups, Transactions, SQL Queries, Backups

Redefining the problem

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200/ ... 2,000 ... 20,000/second

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Transactions you can count on

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Transactions you can count on

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Herding Cats - Java Style

• How to distribute data

• How to find it

• How to resolve references – IMDG versus user view: FK ↔ OO

• Atomicity on failure

• Timeouts

• Scalability

• Consistency and isolation

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The 'T' Word

• GigaSpaces Local Transactions

• GigaSpaces Distributed Transactions

• Mirror service– see Cat-Herding 101

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How CloudTran ORM works

Client

TxB

Gridsearch

OL

Data Data

OrderService

Partitioning

(entity groups)

Co

mm

it

Confirm

Con

firm Com

mit

Commit

Datasources

Tx

Messaging

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300 .. 700 .. 900 .. 2,100

• Performance of transaction buffer– Tiny Transactions per second

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Virgin Airways

LastMinute.com

IMDG

In-Cloud Federated Applications

IMDG

CloudTran -Federated

Transaction Buffer

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Scalable transactions in the cloud?

– platform for mainstream Java developers– to use IMDG– for scalable, commercial applications– without worry and minimal hassle– for commercial advantage– GigaSpaces

CloudTran

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End