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Microservices with Clojure

You're reading from   Microservices with Clojure Develop event-driven, scalable, and reactive microservices with real-time monitoring

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788622240
Length 336 pages
Edition 1st Edition
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Author (1):
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Anuj Kumar Anuj Kumar
Author Profile Icon Anuj Kumar
Anuj Kumar
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Table of Contents (13) Chapters Close

Preface 1. Monolithic Versus Microservices FREE CHAPTER 2. Microservices Architecture 3. Microservices for Helping Hands Application 4. Development Environment 5. REST APIs for Microservices 6. Introduction to Pedestal 7. Achieving Immutability with Datomic 8. Building Microservices for Helping Hands 9. Configuring Microservices 10. Event-Driven Patterns for Microservices 11. Deploying and Monitoring Secured Microservices 12. Other Books You May Enjoy

Creating a microservice for alerts


The Alert service is used to send email alerts and SMS. Alerts can be generated at various levels by other microservices. For example, successful creation of a consumer, provider, service, or an order may require an email to be sent to the relevant stakeholders. Similarly, alerts may be required whenever there is a change in the status of the order or a rating is received. The Alert service does not maintain a local database, it just generates events for each successful alert sent that can be tracked for monitoring purposes. The following table lists the endpoints for the Alert service:

URI

Params

Description

POST /alerts/email

to, cc, subject, body

Sends an alert via email to one or more recipients.

POST /alerts/sms

to, body

Sends an alert via SMS to one or more recipients.

Adding routes

Mostly, the Alert service will listen for events as an Observer and will not receive requests to send alerts via routes. If it is required to send alerts synchronously, the /alerts...

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