The document discusses creating scalable and configurable multi-tenancy applications. It provides an overview of multi-tenancy and common business scenarios. It then covers important considerations for multi-tenancy architecture including different data methodologies, benefits, technology selection, database design, security, and customized infrastructure configuration. Examples of multi-tenant applications are also presented.

1. Create Scalable and Configurable
Multi-Tenancy Application

2. Housekeeping
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3. Presenters
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Lalit Kumar
Business Analyst
Harbinger Systems
Chinmay Shrikhande
Senior Software Engineer
Harbinger Systems

4. Agenda
• Multi-Tenancy: An overview and business scenarios
• Multi-Tenancy architecture
– Methodologies and benefits
• Technical considerations
– Technology selection
– Database design
– Security
– Customized infrastructure configuration
• Showcasing examples
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5. Multi-Tenancy: An Overview
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Customer A Customer B Customer C
Application
(Source Code + OS + Hardware)
Customer B’s Data Customer C’s DataCustomer A’s Data

6. Multi-Tenancy: Business Scenarios
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Catering businesses having own end users
Example: Healthcare Application for Hospitals
Regulated access based on user role
Support different workflows for a process
Offer selective modules to tenants
Have tenant specific branding

7. Multi-Tenancy: Methodologies at Data Level
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Tenant B
Tenant A
Tenant C
Separate databases
Tenant B
Tenant A
Tenant C
Separate schema
Tenant B
Tenant A
Tenant C
Shared database and
shared schema

8. Multi-Tenancy: Benefits
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Scalability
Easily upgrade resources
Easy upgrades
Upgrades can be pushed to all customers at once
Better utilization of resources
Less chances of resources being idle
Cheaper and easy maintenance
Troubleshooting and fixing issues is relatively easy

9. Multi-Tenancy: Technical Considerations
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Technology selection Database design
Security Customized infrastructure

10. Technology Selection
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Cloud compatibility Architecture compatibility
Performance Integration with other technology
Data migration support Compliance considerations
Community support

11. Database Design
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Logical separation
Shared database architecture
Physical separation
Shared Vs isolated
Economic
Security
Tenant
Regulatory
Extensibility patterns

12. Security
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Application level
Authorized access
Super admin visibility
Tenant data encryption
Database level security
Separate database admin
Audit logs

13. Customized Infrastructure Configuration
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Service infrastructure
Configurable UI design
Modules based on role permission
Resource infrastructure
Different set of infrastructure
Adding of resources on demand basis

14. Technology Stack
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15. Use Case: Cloud Based Social Learning and
Mentoring Application
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Scenario
Platform for organizations, to effectively manage and
utilize their employee skills
Search and connect with mentors those are aligned to
their SKAs
Scalable application to cater to diverse users
Feature based selection
High user engagement
Universal access

16. Use Case: Cloud Based Social Learning and
Mentoring Application
• SaaS based application using open source
technologies
• Cloud based solution with multi tenant architecture
with high scalability and low maintenance
• Account management setup for easy configuration
• Recommendation and matching engine
• Data reports and audit reports for performance
review
• Enabled client to enter the market quickly with an
intelligent virtual mentoring application
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17. Use Case: HCM Application for Enterprises
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Scenario
Desired single implementation for all customers
Maintain customer’s data separately
Modular offering
Flexible design to handle varying customization
Branding, access control and workflows

18. Use Case : Harbinger Solution
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• Used multi-tenant architecture
• Single code base for entire solution
• Intelligently crafted database design to
form one normalized DB
• Load balancer to improve
performance
• Separate reporting server
• Application supports 200 tenants
• Average data size for a tenant 700 MB
Mobile Desktop
Presentation layer (ASP .NET MVC 4.0)
Load balancer
Business layer
Customer A
data
Customer B
data
Customer C
data
Reporting
server
Load balancer

19. Multi-Tenancy: Conclusion
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Maintaining high availability
An issue may result in downtime for all your customers
Maintaining security
A breach could expose data to other tenants
Maintaining performance
A few tenants may consume resources hampering the
performance of other tenants

20. Q&A
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