Book Image

Architectural Patterns

By : Anupama Murali, Harihara Subramanian J, Pethuru Raj Chelliah
Book Image

Architectural Patterns

By: Anupama Murali, Harihara Subramanian J, Pethuru Raj Chelliah

Overview of this book

Enterprise Architecture (EA) is typically an aggregate of the business, application, data, and infrastructure architectures of any forward-looking enterprise. Due to constant changes and rising complexities in the business and technology landscapes, producing sophisticated architectures is on the rise. Architectural patterns are gaining a lot of attention these days. The book is divided in three modules. You'll learn about the patterns associated with object-oriented, component-based, client-server, and cloud architectures. The second module covers Enterprise Application Integration (EAI) patterns and how they are architected using various tools and patterns. You will come across patterns for Service-Oriented Architecture (SOA), Event-Driven Architecture (EDA), Resource-Oriented Architecture (ROA), big data analytics architecture, and Microservices Architecture (MSA). The final module talks about advanced topics such as Docker containers, high performance, and reliable application architectures. The key takeaways include understanding what architectures are, why they're used, and how and where architecture, design, and integration patterns are being leveraged to build better and bigger systems.

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Table of Contents (13 chapters)
Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Free Chapter
1
Demystifying Software Architecture Patterns
Demystifying Software Architecture Patterns
Envisioning the software-defined world
Software patterns
Software architecture patterns
The EDA fundamental principles
The ED-SOA composite pattern benefits
Microservices architecture (MSA)
Event-driven microservices patterns
Space-based architecture (SBA)
Combining architecture patterns
Special-purpose architectures
Real-time context-aware prediction architecture
Summary
Additional reading materials
2
Client/Server Multi-Tier Architectural Patterns
Client/Server Multi-Tier Architectural Patterns
Domain name service (DNS) server and DNS client
Functional requirements in two-tier client-server patterns
The three-tier pattern / multi-tier pattern client-server
Three-tier client-server architecture
The distributed client-server architecture
Motivation for development of web application patterns
The ASP.Net framework
Design patterns for web application development
Summary
3
Object-Oriented Software Engineering Patterns
Object-Oriented Software Engineering Patterns
Key elements of OOD
Design principles
OO design patterns
Concurrency patterns
Summary
References
4
Enterprise Integration Patterns
Enterprise Integration Patterns
Need for integration patterns
Integration scenarios in enterprises
Main challenges in enterprise integration
Getting started with messaging patterns
Pipe and filter pattern
Message router pattern
Message translator pattern
Message endpoint pattern
Point-to-point channel pattern
Publish-subscribe channel pattern
Datatype channel pattern
Message bus patterns
Command message patterns
Event message patterns
Request-reply pattern
Content-based router pattern
Message filter pattern
Resequencer pattern
Polling consumer pattern
Channel adapter
Mobile integration pattern
Request-response pattern
Defining a push notification pattern
API management pattern
Summary
5
Domain-Driven Design (DDD) Principles and Patterns
Domain-Driven Design (DDD) Principles and Patterns
Principles, characteristics, and practices of DDD
DDD patterns
Integrating bounded contexts
Integrating with legacy systems
Distributed bounded context integration strategies
Tactical patterns
Patterns to model the domain
Emerging patterns
Summary
References and further reading materials
6
Enterprise Architecture Platforms and Tools
Enterprise Architecture Platforms and Tools
Overview of enterprise architecture frameworks
Getting started with TOGAF
Architecture development method (ADM)
Deliverables, artifacts, and building blocks
Enterprise continuum
Architecture repository
Zachman framework for enterprise architecture
Enterprise architecture platforms and tools
Enterprise Architect from Sparx Systems
Dragon1
ABACUS from avolution software
Summary
References
7
Service-Oriented Architecture (SOA)
Service-Oriented Architecture (SOA)
Web services and SOA
Introduction to SOA
Life cycle of SOA
Primary characteristics of SOA
Principles of SOA
SOA design patterns
Summary
8
Event-Driven Architectural Patterns
Event-Driven Architectural Patterns
Service-oriented architecture and event-driven architecture (SOA versus EDA)
Key characteristics of event-driven patterns
Event flow layers
Design considerations for event-driven patterns
Implementation variants of EDA patterns
Types of event-driven patterns
EDA pattern implementation in systems/processes
Improving the performance of EDA-based processes/systems
IBM WebSphere MQ
Emerging trends in EDA
References
Summary
9
Microservices Architecture Patterns
Microservices Architecture Patterns
Microservices patterns
Remote procedure invocation (RPI) pattern
Messaging design pattern
Domain-specific protocol pattern
API gateway pattern
Service discovery pattern
Service registry pattern
Service registration pattern
Event-driven architecture (EDA) patterns
Event sourcing pattern
Transaction log tailing pattern
Publishing events using the database trigger pattern
Application publishes events pattern
Testing and troubleshooting patterns
Access token pattern
Service component test pattern
Log aggregation pattern
Application metrics pattern
Distributed tracing pattern
Health check API pattern
Circuit breaker pattern
Summary
10
Patterns for Containerized and Reliable Applications
Patterns for Containerized and Reliable Applications
Introduction
Docker image building patterns
Multi-stage image building pattern
The pattern for file sharing between containers
Pipes and filters pattern
Containerized applications - Autopilot pattern
Containers - persistent storage patterns
Docker compose configuration pattern
Docker container anti-patterns
Patterns for highly reliable applications
Resiliency implementation strategies
Summary
11
Software-Defined Clouds - the Architecture and Design Patterns
Software-Defined Clouds - the Architecture and Design Patterns
Reflecting the cloud journey
Traditional application architecture versus cloud application architecture
Cloud integration patterns
Cloud design patterns
Cloud reliability and resilience patterns
Cloud security patterns
Summary
Bibliography
12
Big Data Architecture and Design Patterns
Big Data Architecture and Design Patterns
The four V's of big data
Big data analysis and technology concepts
Big data analysis and data science
Big data platform
Big data architecture landscape and layers
Big data architecture patterns
Big data design patterns
Summary
References

OO design patterns

Object-oriented design patterns solve many common software design problems, as follows, that architects come across every day:

  • Finding appropriate objects
  • Determining object granularity
  • Specifying object interfaces
  • Specifying object implementations
  • Programming to an interface, not an implementation
  • Putting the reuse mechanism to work

We will touch upon some of the common problems and how design patterns solve the mentioned glitches in this section and cover OO design patterns in detail.

We can categorize the patterns into three types: creational, structural, and behavioral. Refer to the table at the end of this chapter, which depicts the patterns and its categories as a simple reference before we move ahead with the details.

Creational design patterns

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