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Payment Channel Architecture

The architecture of a payment channel system involves a structured flow of information and funds between the merchant, the aggregator, and the core payment providers.^[600-developer__principle__aggregate-payment-system.md]

Core System Flow

The theoretical design of an aggregated payment system centers on abstracting the complexities of connecting to multiple payment providers.^[600-developer__principle__aggregate-payment-system.md] This architecture allows a single interface to support various channels by routing transactions appropriately.

Technical Implementation

In modern implementations, this architecture is often realized using a microservices architecture^[600-developer__principle__aggregate-payment-system.md]. This approach separates concerns—such as routing, reconciliation, and notification—into distinct services.

Automated Callbacks

A critical component of this architecture is the ability to handle automatic callbacks (also known as auto-notify or auto-callback) from payment channels^[600-developer__principle__aggregate-payment-system.md]. This mechanism ensures that the system receives asynchronous updates regarding transaction status (e.g., success or failure) directly from the upstream payment provider without manual intervention^[600-developer__principle__aggregate-payment-system.md].

Integration Options

Architectural decisions often depend on the specific deployment environment and integration methods available:

  • Mobile Frameworks: Integration may involve hooking into frameworks like Xposed or VirtualXposed to intercept payment traffic on client devices^[600-developer__principle__aggregate-payment-system.md].
  • Merchant Types: The architecture must accommodate different merchant access levels, such as Micro-merchants (小微商户), which often utilize specific supplier mechanisms for integration^[600-developer__principle__aggregate-payment-system.md].

Sources

  • 600-developer__principle__aggregate-payment-system.md