System Design Practice 1
System Design of APIs and Microservices.
Designing APIs and microservices requires careful planning to ensure scalability, reliability, maintainability, and performance. Here’s a step-by-step approach to system design for APIs and microservices.
Requirements.
Functional Requirement - Requirement of the API or microservice. Example - User Authentication, Product Management, Order, Catalog, Inventory.
NonFunctional Requirement - Scalability, Availability, Reliability, Latency, and Throughput.
Constraints - Technology stack, response time, cost limits, or existing system constraints.
Identify Microservice.
Single Responsibility Principle (SRP) - Each microservice should handle one specific business function.
Example: Separate microservices for user management, inventory, and order processing.
Domain-Driven Design (DDD) - Break down the system into bounded contexts and align microservices with these contexts.
Loosely Coupled Architecture - Microservices should be independent to avoid cascading failures.