Pros and cons of monolithic and microservices architecture.

Monolithic Architecture

Pros:

• Simplicity of development and deployment, especially in the early stages of the project.
• Easier to test, as all components are in one application.
• Less overhead for communication between services.

Cons:

• Difficulty in scaling individual parts of the application — the entire monolith is scaled as a whole.
• Challenges in maintenance and development as the codebase and team grow — changes in one place can affect the entire system.
• Dependency between components reduces flexibility.

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Microservices Architecture

Pros:

• Scalability of individual services independently of each other.
• Flexibility in choosing technologies and updates for each service.
• Improved resilience — failure of one service does not necessarily lead to the failure of the entire system.

Cons:

• Complexity of development and deployment due to distribution.
• Need for reliable communication between services (REST, gRPC, queues).
• More complex testing and debugging, requiring monitoring and logging of the distributed system.

The choice depends on the size of the project, the team, and the requirements for scalability and reliability.