Grokking Microservices Design Patterns
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The Architecture of the BFF Pattern
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The Blueprint

The architecture of the BFF pattern primarily consists of individual backends (the BFFs), each catering to a specific frontend. These BFFs, in turn, communicate with the underlying microservices to fetch the required data.

Let's break down this structure:

  1. Frontend Applications: These are the various user-facing applications, such as desktop, mobile, or web applications. They are like the customers ordering from a menu in a restaurant.

  2. BFFs (Backends for Frontends): Each BFF is paired with a specific frontend application, catering to its unique requirements. They are like the chefs preparing each dish according to a customer's preferences.

  3. Microservices: These are the underlying services that the BFFs interact with to fetch data. They are like the kitchen staff, providing the raw materials needed for each dish.

BFF Architecture
BFF Architecture

A Closer Look at BFFs

But what does a BFF (Backend for Frontend) actually do? It takes on several crucial responsibilities:

  1. Tailored Data Delivery: Each BFF ensures that its paired frontend receives just the data it needs. It's like a filter, ensuring that the frontend isn't overwhelmed with unnecessary information.

  2. Streamlining Communication: The BFF communicates with multiple microservices, consolidates the data, and presents it to the frontend in a streamlined manner. It's like an interpreter, translating a myriad of languages into one that the frontend understands.

  3. Handling Client-Specific Logic: Each BFF can also handle logic specific to its frontend, relieving the client from complex computations. It's like a personal assistant, taking care of tasks to make the client's job easier.

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