Hands-On Microservices with Django: Build cloud-native and reactive applications with Python using Django 5 / Практические микросервисы с Django: Создание облачных и реактивных приложений на Python с использованием Django 5 Год издания: 2024 Автор: Woldman Tieme / Вольдман Тиме Издательство: Packt Publishing ISBN: 978-1-83546-852-4 Язык: Английский Формат: PDF, EPUB Качество: Издательский макет или текст (eBook) Интерактивное оглавление: Да Количество страниц: 278 Описание: Unlock the potential of microservices architecture and master the art of building scalable and resilient web applications using Django Key Features Deliver, optimize, and secure high-performing microservices in Django Apply community-standard components for microservices like DRF (RESTful APIs), Celery, RabbitMQ, Redis, and Django’s Cache Framework Transform existing monolithic applications into microservices Book Description Are you a Django developer looking to leverage microservices to create optimized and scalable web applications? If yes, then this book is for you. With microservices, you can split an application into self-contained services, each with a specific scope running asynchronously while collectively executing processes. Written by an experienced Python developer, Hands-On Microservices with Django teaches you how to develop and deploy microservices using Django and accompanying components such as Celery and Redis. You’ll start by learning the principles of microservices and message/task queues and how to design them effectively. Next, you’ll focus on building your first microservices with Django RESTful APIs (DFR) and RabbitMQ, mastering the fundamentals along the way. As you progress, you’ll get to grips with dockerizing your microservices. Later, you’ll discover how to optimize and secure them for production environments. By the end of this book, you’ll have the skills you need to design and develop production-ready Django microservices applications with DFR, Celery/RabbitMQ, Redis, and Django’s cache framework. What you will learn Understand the architecture of microservices and how Django implements it Build microservices that leverage community-standard components such as Celery, RabbitMQ, and Redis Test microservices and deploy them with Docker Enhance the security of your microservices for production readiness Boost microservice performance through caching Implement best practices to design and deploy high-performing microservices Who this book is for This microservices and Django book is for Django developers who want to take the next step in back-end application development by adopting cloud-native microservices. Backend developers with working knowledge of Flask or other Python programming web frameworks will also benefit from this book. Basic knowledge of developing web APIs will help you get started with quickly building microservices on your own. Раскройте потенциал архитектуры микросервисов и овладейте искусством создания масштабируемых и устойчивых веб-приложений с использованием Django Kлючевые функции Предоставляйте, оптимизируйте и защищайте высокопроизводительные микросервисы в Django Применяйте стандартные компоненты сообщества для микросервисов, таких как DRF (RESTful API), Celery, RabbitMQ, Redis и фреймворк кэширования Django Преобразуйте существующие монолитные приложения в микросервисы Описание книги Вы разработчик на Django и хотите использовать микросервисы для создания оптимизированных и масштабируемых веб-приложений? Если да, то эта книга для вас. С помощью микросервисов вы можете разделить приложение на автономные службы, каждая из которых имеет определенную область действия и работает асинхронно, одновременно совместно выполняя процессы. Книга "Практические микросервисы на Django", написанная опытным разработчиком на Python, научит вас разрабатывать и развертывать микросервисы с использованием Django и сопутствующих компонентов, таких как Celery и Redis. Вы начнете с изучения принципов работы микросервисов и очередей сообщений/задач, а также с того, как эффективно их проектировать. Далее вы сосредоточитесь на создании своих первых микросервисов с использованием Django RESTful API (DFR) и RabbitMQ, попутно осваивая основы. По мере продвижения вы научитесь настраивать свои микросервисы. Позже вы узнаете, как оптимизировать и обезопасить их для производственных сред. К концу прочтения этой книги вы овладеете навыками, необходимыми для проектирования и разработки готовых к работе приложений Django для микросервисов с использованием DFR, Celery/RabbitMQ, Redis и фреймворка кэширования Django. Что вы узнаете Разбирайтесь в архитектуре микросервисов и в том, как она реализована в Django Создавайте микросервисы, использующие стандартные компоненты сообщества, такие как Celery, RabbitMQ и Redis Тестируйте микросервисы и развертывайте их с помощью Docker Повышайте безопасность ваших микросервисов для обеспечения их готовности к работе Повышайте производительность микросервисов за счет кэширования Внедрять передовые методы проектирования и развертывания высокопроизводительных микросервисов Для кого предназначена эта книга Эта книга о микросервисах и Django предназначена для разработчиков Django, которые хотят сделать следующий шаг в разработке серверных приложений, внедрив облачные микросервисы. Эта книга также пригодится разработчикам серверной части, которые на практике знакомы с Flask или другими веб-платформами для программирования на Python. Базовые знания о разработке веб-API помогут вам быстро приступить к самостоятельному созданию микросервисов.
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Оглавление
Prefacexiii Part 1: Introducing Microservices and Getting Started 1 What Is a Microservice? 3 Comparing monolithic web applications and microservices 4 A monolithic version of a Discount Claim app 4 A microservices version of the Discount Claim app 6 Characteristics of microservices 7 Exploring the microservices architecture and its components 8 An analogy to deepen our understanding of microservices10 Listing the benefits of microservices 11 The drawbacks of microservices 12 Distinguishing types of microservice 12 Cloud-native microservices 12 Reactive microservices 14 Designing microservices 15 Analyzing the user story 15 Split the user story into use cases 16 Summary19 2 Introducing the Django Microservices Architecture 21 Technical requirements 21 Exploring Django’s native components for microservices web applications 22 DRF22 Django’s Cache Framework 24 Traversing the external components for Django microservices web applications28 Task and message queue brokers 28 Container software 30 The complete Django microservices architecture 31 Creating a sample microservice 31 Implementation 1: Offloading a task with a RabbitMQ microservice 33 Implementation 2: Offloading a task with a Celery microservice 39 Summary 43 3 Setting Up the Development and Runtime Environment 45 Technical requirements 45 Setting up the development environment 46 Extra setup for Windows developers 46 Installing the required Python packages 49 Setting up the runtime environment 51 Installing Docker Desktop 52 Installing RabbitMQ as a Docker container 53 Installing Redis as a Docker container 54 Signing up for MongoDB and working from VS Code 54 Analyzing the sample microservices application 56 Matching an address 56 The app’s requirements as user stories 57 Splitting the requirements into use cases 59 Phasing the development of the sample application 61 Summary 61 Part 2: Building the Microservices Foundation 4 Cloud-native Data Processing with MongoDB 65 Technical requirements 66 Introducing MongoDB and cloud-native databases 66 What are cloud-native databases? 66 MongoDB is a NoSQL database 67 Setting up MongoDB 69 Optional: creating a paid cluster for production databases 70 Creating a database user 70 Setting up our MongoDB cluster for Django 71 Creating a Database 72 Creating documents inside a collection 72 Updating documents 73 Deleting documents and collections 73 Mapping CRUD operations to HTTP methods 74 CRUD operations on MongoDB with Django ORM 75 CRUD operations on MongoDB with pymongo 81 Cleaning up 84 Summary 84 5 Creating RESTful APIs for Microservices 85 Technical requirements 86 Introducing RESTful APIs 86 Benefits of RESTful APIs 88 The RESTful API architecture 88 Building RESTful APIs with DRF 90 Setting up DRF 92 Creating a model and a serializer 93 Creating a view and the URL endpoints 94 Browsing a DRF RESTful API 106 Error handling 108 Handling wrong-formatted requests 108 Handling validation errors 109 Summary 110 6 Orchestrating Microservices with Celery and RabbitMQ 111 Technical requirements 112 Introducing task queues 112 Implementing the work queue scenario 113 Implementing the Publish-Subscribe scenario 116 Implementing the Request-Response scenario 119 Exploring Celery and RabbitMQ 123 Celery 124 RabbitMQ 125 Creating and running asynchronous tasks 127 Creating and running a Celery-based task 128 Creating and running a RabbitMQ-based task 141 Monitoring tasks and task queues 147 Monitoring Celery tasks with Flower 147 Monitoring RabbitMQ tasks 148 Summary 149 7 Testing Microservices 151 Technical requirements 152 Introducing testing microservices 152 Unit testing microservices 154 Creating and running happy path tests 155 Creating and running boundary tests 160 End-to-end testing microservices 163 Automated testing with Selenium 166 Summary 169 8 Deploying Microservices with Docker 171 Technical requirements 172 Introducing Docker 172 Benefits of Docker (containers) 173 Containerizing microservices 173 Applying multi-container deployment with Docker Compose 177 Deploying a Django microservices application 180 Showing a list of the images we created 181 Showing a list of created and running containers 181 Inspecting the console output of a container 182 Stopping a container 182 Starting a container 183 Removing a container 183 Removing an image 183 Deploying a new microservices version 184 Scaling microservices 185 Vertical and horizontal scaling 185 Docker Swarm 187 Kubernetes 187 Summary 188 Part 3: Taking Microservices to the Production Level 9 Securing Microservices 191 Technical requirements 192 Introducing microservices security 192 North-south security for microservices 192 East-west security for microservices 194 Token-based security with JWT 195 User-based security with OAuth 2.0 196 Controlling access to microservices 196 Securing data communication between microservices 202 Summary 204 10 Improving Microservices Performance with Caching 205 Technical requirements 206 Introducing caching 206 Applying Django’s cache framework 208 Caching a web page 210 Caching page data 212 Using Redis for caching 215 Redis as a backend cache for Django’s cache framework 215 Redis as a standalone cache 216 Summary 219 11 Best Practices for Microservices 221 Technical requirements 221 Organizing code 222 Apply the singe task principle 222 Separate responsibilities 222 Standardize the communication protocols 223 Containerize microservices 223 Apply version control 224 Document the code 224 Conduct code reviews 224 Documenting microservices 225 Provide code comments 225 Create a README file for the microservices application 226 Document RESTful APIs 227 Logging and monitoring 227 Apply integrated logging 228 Implement log levels 229 Log context information 229 Alert anomalies 230 Error handling 230 Catch and log errors 230 Other error handling options 231 Versioning microservices 232 Apply semantic versioning 232 Utilize RESTful API versioning 233 Summary 233 Further reading 234 12 Transforming a Monolithic Web Application into a Microservices Version 235 Introducing the transformation approach 236 Implementing the approach step by step 236 Determining requirements 237 Decomposing the monolith 238 Designing the microservices 241 Selecting the technology 242 Creating the data foundation 243 Developing the microservices 244 Testing and deploying 245 Summary 246 Index 247 Other Books You May Enjoy 256
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