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Multi-tenancy in the Cloud

Vikas HazratiInphina Technologies

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SaaS is a reality

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multi-tenancy

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multi-instance

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it is not multi-instance

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maturity

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level of multitenancy

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multi-tenant database

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multi-tenancy in clouds

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why it matters in the cloud

sell monthly or annual per seat subscriptionfraction as compared to onsite

reduce operating costmanage more with less

more money gives more room to innovate

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should SaaS always be multitenant ?

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prerequisite

is it a prerequisite for Cloud Computing?

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how it is done today

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coarse grained multi-tenancy

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challenges

complexity

cost

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challenges

elasticity challenge

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it is so damn hard!

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take a step back to the history

DOS

solution

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lesson learnt

deal with the infrastructure

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elastic middle-ware

service physicalresource

service abstraction

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dealing with infrastructure

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where are we?

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elasticity is still an issue

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google approach

sdk 1.3.6

17th aug 2010

namespaces api

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application level namespace

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user level namespace

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maturity

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concerns

security

impact of other clients

no I can pay, make me special

being forced into an upgrade

configurations / customizations to a level

user acceptance testing?

live date, whats that?

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when not to go multi-tenant

not comfortable with security

high customization and tight integration

workload does not run in VM

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references

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vhazrati@inphina.com

http://www.inphina.comhttp://thoughts.inphina.com

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