Microservices
Microservices architecture is a software design pattern that structures an application as a collection of small, independent, and loosely-coupled services. Each microservice is responsible for a specific business capability and communicates with other microservices through APIs. Overall, the microservices architecture provides a flexible, scalable, and resilient way to build and manage modern, complex applications.
8 Core Components are Microservices Architecture
- Service Discovery
- Load Balancer
- API Gateway
- Service Registry
- Circuit Breaker
- Service Monitoring
- Service Orchestration
- Configuration Server
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Service Discovery
- A service registry that helps services locate and communicate with each other.
Load Balancer
- A component that distributes incoming requests to the appropriate service instances.
API Gateway
- An entry point for client requests that routes requests to the appropriate microservices, performs authentication and authorization, and handles other tasks such as caching and request-response mapping.
Service Registry
- A database of all available microservices, their endpoints, and metadata.
Circuit Breaker
- A mechanism that helps prevent cascading failures by interrupting communication between services when one service is not responding.
Service Monitoring
- A system that tracks the health and performance of microservices and generates alerts in case of failures or performance degradation.
Service Orchestration
- A layer that coordinates communication and interactions between microservices to ensure that they work together correctly.
Configuration Server
- A centralized repository for storing configuration information that is accessible to all microservices.
Microservices Characteristics
01. Decentralized governance
Each microservice operates independently, with its own lifecycle, development team, and deployment pipeline.
02. Independent deployment
Microservices can be deployed independently of one another, allowing for faster delivery of new features and bug fixes.
03. Fine-grained services
Microservices are small, focused services that perform specific functions, allowing for greater organizational alignment and the ability to integrate different technologies and programming languages.
04. Inter-service communication
Microservices communicate with one another using lightweight, standards-based APIs, such as REST or gRPC.
05. Data isolation
Microservices have their own data stores, allowing for greater flexibility in data management and the ability to use the best database technology for each specific service.
Benefits of Microservices
Improved Scalability
Microservices can be deployed and scaled individually, making it easier to handle increased demand for specific services.
Enhanced Resilience
A failure in one service will not affect the entire system, making the overall application more robust and resilient.
Increased Flexibility
Microservices can be built and maintained independently, allowing for the integration of different technologies and programming languages, and the use of the best tools for each specific service.
Faster Time-to-Market
Smaller, focused services can be developed and deployed more quickly, leading to faster delivery of new features and bug fixes.
Easier Maintenance
Well-defined, limited scopes for individual services make it easier to maintain and make changes to specific services without affecting the rest of the system.
Better Organizational Alignment
Microservices can be aligned with different business domains and teams, leading to improved communication and alignment within an organization.
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