Service Infrastructure Standardizing Datapath Module Communications
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Solution Overview
Problem
Existing data storage systems face challenges in scalability, maintainability, and extensibility due to custom and irregular inter-module communications, leading to tight coupling and complexity as the system evolves over time.
Innovation Solution
The implementation of a service infrastructure that regularizes communications among datapath modules through standardized functions like Notify, Monitor, and Start IO, allowing modules to register and invoke sub-modules with unique IDs, enhancing modularity, scalability, and maintainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If custom APIs are designed for each module to enable functional interactions, then module-specific functionality is achieved, but system complexity and coupling increase over time
Solution Approach 1:
The patent implements a universal service infrastructure with standardized communication primitives (Notify, Monitor, StartIO) that can be used by all datapath modules for inter-module communication. This replaces the need for custom-specific APIs in each module, allowing any module to invoke any other module through a common interface, thereby reducing overall system complexity while maintaining functional versatility.
Solution Approach 2:
The service infrastructure acts as an intermediary layer between datapath modules, providing a standardized communication framework. Instead of modules directly implementing custom interaction protocols with each other, they all interact through the unified service infrastructure, which manages the communication details and reduces direct coupling between modules.
2Adaptability or versatility
If modules are designed with custom APIs for specific interactions, then functional requirements are met, but scalability and maintainability deteriorate
Solution Approach 1:
By implementing a universal service infrastructure with standardized communication primitives, the system allows new modules to be added without requiring custom API designs. Existing modules can continue to function while interacting with new modules through the same standardized interface, significantly improving maintainability and scalability.
Solution Approach 2:
The service infrastructure is segmented into distinct, well-defined communication primitives (Notify for event notifications, Monitor for monitoring operations, StartIO for I/O operations). This segmentation allows each primitive to be independently understood, tested, and maintained, making the overall system more maintainable while preserving full functional interaction capability.
3Ease of operation
If irregular communication patterns are used among modules, then specific functional needs are satisfied, but modularity and extensibility are reduced
Solution Approach 1:
The service infrastructure provides a universal set of communication primitives that can satisfy various functional interaction needs through standardized calls. Modules can express their functional needs by composing these standard primitives, enabling the system to adapt to new functional requirements without changing the fundamental communication interface, thus improving extensibility.
Solution Approach 2:
The standardized communication primitives accept parameters that can be configured to match different functional needs. For example, the Notify primitive can be called with different event types and parameters to satisfy various notification requirements, while maintaining the same basic call structure. This parameter flexibility allows the system to adapt to different functional scenarios without changing the communication protocol.
Data Source
AI summary
A data storage system includes interface circuitry receiving data storage requests and sending corresponding responses to data storage clients, and data storage devices providing non-volatile storing and retrieval of client data in response to the data storage requests. Processing circuitry executes software-implemented datapath modules that realize datapath functions to process the data storage requests and responses, as well as service infrastructure modules to realize a service infrastructure to provide for regularized communications among the datapath modules, including Notify, Monitor, and StartIO communications. Each datapath module registers with the service infrastructure to establish links into corresponding sub-modules that handle the Notify, Monitor, and Start IO communications, and each datapath module invokes a respective sub-module of another datapath module by performing regularized Notify, Monitor, and Start IO functions of the service infrastructure with an identification of the target datapath module which is to receive the corresponding regularized communication.