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  • Book Overview & Buying A Developer's Essential Guide to Docker Compose
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A Developer's Essential Guide to Docker Compose

A Developer's Essential Guide to Docker Compose

By : Emmanouil Gkatziouras
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A Developer's Essential Guide to Docker Compose

A Developer's Essential Guide to Docker Compose

5 (3)
By: Emmanouil Gkatziouras

Overview of this book

Software development is becoming increasingly complex due to the various software components used. Applications need to be packaged with software components to facilitate their operations, making it complicated to run them. With Docker Compose, a single command can set up your application and the needed dependencies. This book starts with an overview of Docker Compose and its usage and then shows how to create an application. You will also get to grips with the fundamentals of Docker volumes and network, along with Compose commands, their purpose, and use cases. Next, you will set up databases for daily usage using Compose and, leveraging Docker networking, you will establish communication between microservices. You will also run entire stacks locally on Compose, simulate production environments, and enhance CI/CD jobs using Docker Compose. Later chapters will show you how to benefit from Docker Compose for production deployments, provision infrastructure on public clouds such as AWS and Azure, and wrap up with Compose deployments on said infrastructure. By the end of this book, you will have learned how to effectively utilize Docker Compose for day-to-day development.
Table of Contents (19 chapters)
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1
Part 1: Docker Compose 101
6
Part 2: Daily Development with Docker Compose
12
Part 3: Deployment with Docker Compose

Setting up a REST-based Lambda function

AWS provides us with Lambda. AWS Lambda is a serverless computing offering that can be integrated and invoked in various ways. One way it can be utilized is by using it as a backend for REST APIs.

The REST-based Lambda function that we shall implement will receive a JSON payload and store it in DynamoDB.

This can be easily simulated locally, since AWS provides docker-lambda.

By using docker-lambda, we can create a container image that can simulate our AWS Lambda function. AWS provides images for this purpose that also include a runtime interface client that facilitates the interaction between our function code and Lambda (https://github.com/lambci/docker-lambda).

Furthermore, this makes it feasible to simulate calls to the Lambda function locally.

Let’s start with the function’s code base.

Initially, we shall persist the request in DynamoDB:

type Subscribe struct {
	Email string `json:"email"`
	Topic...
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A Developer's Essential Guide to Docker Compose
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