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10 Application Layer and Microservices Quiz

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10 Application Layer and Microservices Quiz

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Questions and Answers

What advantage does separating the web layer from the application layer provide?

It allows independent scaling and configuration of both layers. (correct)

It simplifies the architecture to a monolithic system.

It eliminates the need for application servers.

It combines multiple APIs into a single service.

Which principle is closely associated with microservices?

Interface Segregation Principle

Dependency Inversion Principle

Open/Closed Principle

Single Responsibility Principle (correct)

What is a key characteristic of microservices?

Each service runs a unique process. (correct)

They are large, tightly coupled services.

They operate under a single database.

They communicate through complex protocols.

What role do service discovery systems like Consul and Etcd play in microservices architecture?

They allow services to find each other using registered names and addresses. Signup and view all the answers

What is a potential disadvantage of implementing an application layer with loosely coupled services?

Increased complexity in deployments and operations. Signup and view all the answers

In the context of microservices, what is asynchronism primarily used for?

Enabling simultaneous service execution without blocking. Signup and view all the answers

How can health checks contribute to the functionality of microservices?

They help verify the integrity of the services. Signup and view all the answers

What is a common communication mechanism used by microservices?

HTTP protocol Signup and view all the answers

Study Notes

Application Layer

Separates web and application layers for independent scaling and configuration
Adding new APIs only requires adding application servers, not web servers
Single responsibility principle promotes small, autonomous services, enabling faster growth
Application layer workers facilitate asynchronous operations

Microservices

A suite of independently deployable, small, modular services
Each service runs a unique process and communicates through a lightweight mechanism for a specific business function
Example: Pinterest has microservices for user profiles, followers, feeds, search, and photo uploads

Service Discovery

Systems like Consul, Etcd, and Zookeeper track service names, addresses, and ports
Health checks (often using HTTP endpoints) verify service integrity
Key-value stores are often used for configuration and other shared data

Disadvantages of Application Layer

Requires a different approach to architecture, operations, and processes compared to monolithic systems
Introduces complexities in deployments and operations.

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Description

Test your knowledge on the application layer and microservices architecture. This quiz covers the principles of service discovery, the benefits of modular services, and the challenges associated with the application layer. Perfect for those looking to deepen their understanding of modern software architecture.