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Let's look at how the application architecture of a multi-tenant system is built from layer to layer.
1. Application layer design
The main role of the application layer is to provide application services for specific user scenarios and help users complete operations in specific scenarios. The core functions of SaaS products are realized by orchestrating the various capabilities of the domain layer. The application layer contains two key modules:
- Tenant Operation Platform ModuleThis module is responsible for the overall operation and management of the SaaS platform, including customer management, tenant management, cloud resource management, order management, platform user management and data analysis. It is like the "command center" of the platform, which ensures smooth operation of tenants and helps the platform control the overall business.
- Merchant Back Office Module: This module is primarily for enterprise customers to help them manage the capabilities autonomously. It includes capacity subscription management, expense bill management, renewal management and capacity authorization management. The merchant backend makes it easy for customers to manage the services they subscribe to on the platform, and they can check their bills and fees at any time.
- Open Platform Module: This module provides third-party developers or partners with the ability to access and integrate interfaces.
2. Domain layer design
The core of the domain layer is to provide reusable business capabilities around core business objects, which is the result of reuse and abstraction of the system as a whole. It contains the following modules:
- Tenant Management Module: Responsible for tenant on-boarding management, including tenant qualification and auditing, tenant isolation mode configuration and so on. This module ensures the smooth onboarding of new tenants and sets the appropriate resource isolation mode. Provide a safe and independent environment for tenants.
- Product Management Module: Responsible for product version configuration, product capability management, and product lifecycle management.
- Cloud Resource Management Module: The management of cloud resources, resource pool management, and elastic scaling strategies are all realized in this module. It provides powerful resource management capabilities for the platform and ensures reasonable resource allocation.
- Billing Metering Management Module: It involves billing plan management, subscription management, fulfillment, renewal and billing statements. This module is key to the revenue of the SaaS platform, ensuring that the platform is able to accurately charge tenants with clear billing and smooth renewals.
- Operations Management Module: It includes customer operation, marketing management, order management and data report. This module provides comprehensive operation support for the platform, helping the platform to improve customer experience, optimize marketing strategy, and maintain good operation of orders and data analysis.
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