Python Microservices Development: Build efficient and lightweight microservices using the Python tooling ecosystem, 2nd Edition

Cover
Copyright
Contributors
Table of Contents
Preface
Chapter 1: Understanding Microservices
	The origins of service-oriented architecture
	The monolithic approach
	The microservice approach
	Microservice benefits
		Separation of concerns
		Smaller projects
		Scaling and deployment
	Pitfalls of microservices
		Illogical splitting
		More network interactions
		Data storing and sharing
		Compatibility issues
		Testing
	Implementing microservices with Python
		How web services work
		The WSGI standard
		Workers, threads, and synchronicity
			A worker pool approach
			Being asynchronous
			Twisted, Tornado, Greenlets, and Gevent
			Asynchronous Python
		Language performance
	Summary
Chapter 2: Discovering Quart
	Making sure we have Python
	How Quart handles requests
		Routing
			Variables and converters
			The url_for function
		Request
		Response
	Quart's built-in features
		The session object
		Globals
		Signals
		Extensions and middleware
		Templates
		Configuration
		Blueprints
		Error handling
		Custom error handler
	A microservice skeleton
	Summary
Chapter 3: Coding, Testing, and Documentation: the Virtuous Cycle
	Different kinds of tests
		Unit tests
		Functional tests
		Integration tests
		Load tests
		End-to-end tests
	Using pytest and tox
	Developer documentation
		Tools for documentation
	Version control
	Continuous Integration and Continuous Deployment
		GitHub Actions
		Documentation
		Coveralls
		Badges
	Summary
Chapter 4: Designing Jeeves
	The Jeeves bot
	User stories
	Monolithic design
		Model
		View and template
		A human-readable view
		Slack workspaces
		Taking actions
		OAuth tokens
		Authentication and authorization
		Background tasks
	Putting together the monolithic design
	Summary
Chapter 5: Splitting the Monolith
	Identifying potential microservices
		Code complexity and maintenance
		Metrics and Monitoring
		Logging
	Splitting a Monolith
		Feature Flags
	Refactoring Jeeves
		Workflow
	Summary
Chapter 6: Interacting with Other Services
	Calling other web resources
	Finding out where to go
		Environment variables
		Service discovery
	Transferring data
		HTTP cache headers
		GZIP compression
		Protocol Buffers
		MessagePack
		Putting it together
	Asynchronous messages
		Message queue reliability
		Basic queues
		Topic exchanges and queues
		Publish/subscribe
		Putting it together
	Testing
	Using OpenAPI
	Summary
Chapter 7: Securing Your Services
	The OAuth2 protocol
	X.509 certificate-based authentication
	Token-based authentication
		The JWT standard
		PyJWT
		Using a certificate with JWT
	The TokenDealer microservice
		The OAuth implementation
		Using TokenDealer
	Securing your code
		Limiting your application scope
		Untrusted incoming data
		Redirecting and trusting queries
		Sanitizing input data
		Using Bandit linter
		Dependencies
	Web application firewall
		OpenResty: Lua and nginx
		Rate and concurrency limiting
		Other OpenResty features
	Summary
Chapter 8: Making a Dashboard
	Building a ReactJS dashboard
		The JSX syntax
		React components
		Pre-processing JSX
	ReactJS and Quart
		Cross-origin resource sharing
	Authentication and authorization
		A note about Micro Frontends
		Getting the Slack token
		JavaScript authentication
	Summary
Chapter 9: Packaging and Running Python
	The packaging toolchain
		A few definitions
		Packaging
			The setup.py file
			The requirements.txt file
			The MANIFEST.in file
		Versioning
		Releasing
		Distributing
	Running all microservices
	Process management
	Summary
Chapter 10: Deploying on AWS
	What is Docker?
	Introduction to Docker
	Running Quart in Docker
	Docker-based deployments
		Terraform
		Service discovery
		Docker Compose
		Docker Swarm
	Kubernetes
	Summary
Chapter 11: What's Next?
	Automation
	Scaling
	Content Delivery Networks
	Multi-cloud deployments
	Lambda Functions
	Expanding monitoring
	Making promises
	Summary
Packt Page
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Index