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Design Patterns for Serverless and FaaS

Following on from our previous article (An introduction to Serverless and FaaS), here we bring you a non-exhaustive list, similar to a recipe book, of common solutions to frequent issues that can occur when designing FaaS solutions.
The patterns are divided into categories, and each one includes the title, the problem (or to put it another way, the symptom), the solution and some of the possible disadvantages. So, without further ado, here is the complete list:

Composition Patterns

How to compose and orchestrate serverless functions in sequences or workflows.

Routing Function

Function Chain

Fan-out / Fan-in

Externalized State

Externalized State

Thick Client

Event Patterns

How to manage asynchronous workflows executed by external events. 

Event Processor

Periodic Invoker

Polling Event Processor

Event Broadcast

Integration Patterns

How to integrate with external systems, including legacy?

Aggregator

Proxy

Strangler

Valet Key

Availability Patterns

How can availability in serverless architecture be guaranteed and performance limitations solved?

Function Warmer

Strangler

Bulkhead

Throttler

Circuit breaker

Mauricio Bergallo

About the Author

Mauricio Bergallo is a Systems Engineer with extensive knowledge in a variety of programming languages. Great experience and understanding with all aspects of the software development life cycle.