Anti-corruption layer in Microservices - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is an Anti-corruption Layer (ACL) in microservices?

An Anti-corruption Layer is a design pattern that acts as a translator between two different systems or services. It prevents the new system from being affected by the legacy system's design or data models, keeping each system clean and independent.

beginner

Why is an Anti-corruption Layer important in system integration?

It protects the new system from inheriting problems or complexity of the old system. It ensures that changes in one system do not directly break the other, allowing systems to evolve independently.

intermediate

Name two common components of an Anti-corruption Layer.

1. Translator or Adapter: Converts data and commands between systems.<br>2. Facade: Provides a simplified interface to the new system hiding legacy complexities.

intermediate

How does an Anti-corruption Layer improve scalability?

By isolating systems, it allows each to scale independently without tightly coupling their data models or logic. This reduces risk and complexity when scaling parts of the system.

beginner

Give a real-life analogy for an Anti-corruption Layer.

Think of a translator between two people speaking different languages. The translator ensures both understand each other without mixing their languages or culture, just like ACL keeps systems separate but connected.

What is the main purpose of an Anti-corruption Layer?

A To translate and isolate between two systems

B To speed up database queries

C To merge two systems into one

D To replace legacy systems entirely

The Anti-corruption Layer acts as a translator and isolates systems to prevent corruption of design or data.

Which component is typically part of an Anti-corruption Layer?

A Cache

B Adapter

C Load balancer

D Database

Adapters or translators convert data and commands between systems in the ACL.

How does an Anti-corruption Layer affect system coupling?

A It merges data models

B It increases tight coupling

C It reduces tight coupling

D It removes all communication

ACL reduces tight coupling by isolating systems and translating between them.

When integrating a legacy system with a new microservice, what is a key benefit of using an ACL?

A Prevents legacy system design from affecting the new service

B Makes the legacy system obsolete immediately

C Duplicates all data between systems

D Removes the need for APIs

ACL prevents the new system from being affected by legacy system design or data models.

Which of the following best describes the role of a facade in an ACL?

A Stores user data

B Encrypts communication

C Balances network traffic

D Simplifies interface to the new system

A facade provides a simple interface hiding the complexity of the legacy system.

Explain what an Anti-corruption Layer is and why it is used in microservices.

Think about how two different systems can talk without mixing their designs.

Describe the main components of an Anti-corruption Layer and their functions.

Consider how the ACL acts as a bridge and shield.