Implementing Microservices on AWS

Implementing

Microservices on AWS

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First Published December 1, 2016

Updated November 9, 2021

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This version has been archived.

For the latest version of this document, refer to



microservices-on-aws/microservices-on-aws.pdf

Notices

Customers are responsible for making their own independent assessment of the

information in this document. This document: (a) is for informational purposes only, (b)

represents current AWS product offerings and practices, which are subject to change

without notice, and (c) does not create any commitments or assurances from AWS and

its affiliates, suppliers or licensors.AWS products or services are provided ¡°as is¡± without

warranties, representations, or conditions of any kind, whether express or implied. The

responsibilities and liabilities of AWS to its customers are controlled by AWS

agreements, and this document is not part of, nor does it modify, any agreement

between AWS and its customers.

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? 2021 Amazon Web Services, Inc. or its affiliates. All rights reserved.

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Contents

Introduction ..........................................................................................................................5

Microservices architecture on AWS ....................................................................................6

User interface ...................................................................................................................6

Microservices....................................................................................................................7

Data store .........................................................................................................................9

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Reducing operational complexity ......................................................................................10

API implementation ........................................................................................................11

Serverless microservices ...............................................................................................12

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Disaster recovery ...........................................................................................................14

Deploying Lambda-based applications..........................................................................15

Distributed systems components ......................................................................................16

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Service discovery ...........................................................................................................16

Distributed data management........................................................................................18

Configuration management............................................................................................21

Asynchronous communication and lightweight messaging ..........................................21

Distributed monitoring ....................................................................................................26

Chattiness.......................................................................................................................33

Auditing ...........................................................................................................................34

Resources ..........................................................................................................................37

Conclusion .........................................................................................................................38

Document Revisions..........................................................................................................39

Contributors .......................................................................................................................39

Abstract

Microservices are an architectural and organizational approach to software

development created to speed up deployment cycles, foster innovation and ownership,

improve maintainability and scalability of software applications, and scale organizations

delivering software and services by using an agile approach that helps teams work

independently. With a microservices approach, software is composed of small services

that communicate over well-defined application programming interfaces (APIs) that can

be deployed independently. These services are owned by small autonomous teams.

This agile approach is key to successfully scale your organization.

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Three common patterns have been observed when AWS customers build

microservices: API driven, event driven, and data streaming. This whitepaper introduces

all three approaches and summarizes the common characteristics of microservices,

discusses the main challenges of building microservices, and describes how product

teams can use Amazon Web Services (AWS) to overcome these challenges.

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Due to the rather involved nature of various topics discussed in this whitepaper,

including data store, asynchronous communication, and service discovery, the reader is

encouraged to consider specific requirements and use cases of their applications, in

addition to the provided guidance, prior to making architectural choices.

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Amazon Web Services

Implementing Microservices on AWS

Introduction

Microservices architectures are not a completely new approach to software engineering,

but rather a combination of various successful and proven concepts such as:

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Agile software development

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Service-oriented architectures

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API-first design

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Continuous integration/continuous delivery (CI/CD)

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In many cases, design patterns of the Twelve-Factor App are used for

microservices.

This whitepaper first describes different aspects of a highly scalable, fault-tolerant

microservices architecture (user interface, microservices implementation, and data

store) and how to build it on AWS using container technologies. It then recommends

the AWS services for implementing a typical serverless microservices architecture to

reduce operational complexity.

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Serverless is defined as an operational model by the following tenets:

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No infrastructure to provision or manage

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Automatically scaling by unit of consumption

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Pay for value billing model

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Built-in availability and fault tolerance

Finally, this whitepaper covers the overall system and discusses the cross-service

aspects of a microservices architecture, such as distributed monitoring and auditing,

data consistency, and asynchronous communication.

This whitepaper only focuses on workloads running in the AWS Cloud. It doesn¡¯t

cover hybrid scenarios or migration strategies. For more information about

migration, refer to the Container Migration Methodology whitepaper.

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