[Update Links] Advanced Distributed Systems Design using SOA & DDD

Advanced Distributed Systems Design using SOA & DDD | udidahan
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Designing large-scale distributed systems is hard. New technologies make it easier to comply with today’s communications and security standards, but don’t auto-magically give you a robust and scalable system. Join Udi for a course packed with the wisdom of companies like SUN, Amazon, and EBay.

Tried-and-true theories and fallacies will be shown, keeping you from making those same costly mistakes today. Communications patterns like publish/subscribe and correlated one-way request/response will be used in conjunction with advanced object-oriented state management practices for long-running workflows. If you enjoy deep architectural discussion, if you are in charge of building a large-scale distributed system, if you want to know more about how the big guys run their systems, this is for you.
Audience

This workshop is targeted at team leads, application and solutions architects, as well as technologists who are involved in making decisions about the overall system design of software products and projects.
Course Topics

Module 1: Distributed Systems Theory
Decades of distributed systems development have taught us many lessons. In this module we’ll cover many historical mistakes as well as proven best practices for scalable and robust design. Topics include:

8 fallacies of distributed systems
Transactions

Module 2: Coupling: Platform, Temporal, & Spatial
Loose coupling has become the watchword of complex systems development, yet few understand its multiple dimensions. In the module we’ll be covering the three different dimensions of coupling as well as patterns for dealing with them.

Platform Coupling – XML/SOAP
Temporal Coupling – Synchronous/Asynchronous
Spatial Coupling – Endpoints/Topics

Module 3: Asynchronous Messaging Patterns
Although scalability is achieved through the use of asynchronous message passing, more advanced message exchange patterns are required to handle today’s complex integration scenarios. This module will cover the most commonly used patterns:

One way
Correlated Request/Response
Publish/Subscribe

Module 4: Bus & Broker Architectural Styles
Enterprise Service Buses are all the rage these days. In this module we’ll be covering what’s the difference between the Bus architectural style, and the more well-known Broker, found commonly in many EAI projects. Topics will include:

Architectural advantages and disadvantages
Technological advantages and disadvantages

Module 5: SOA Building Blocks
One of the goals of SOA is to develop systems which are more closely aligned with Business. In this module we’ll be covering an analysis methodology from moving from the business domain to executable systems that comply with all the principles of loose-coupling.

Business Services
Business Components
Autonomous components & Queues

Group Analysis Exercise
In order to ensure maximum retention, students take part in a group analysis of an enterprise problem domain, identifying business services and events, experiencing first hand the tacit knowledge of parts of a solution that “feel right” and follow the rules outlined in the previous modules, as well as the other parts that “feel wrong”. Many students have described this exercise as the point of epiphany, when all the previous information “just made sense” afterward.

Module 6: Service Structure & CQRS
Drilling inside Business Services and Business Components, the topic of Command/Query Responsibility Segregation is introduced for designing collaborative, high-scale systems with great user experience. The connection between capturing user intent in task-based UIs, caching, and one-way messaging is described.
Topics include:

Search & Queries + Denormalization
Validation & Business Logic for commands
Publish/Subscribe eventing for synchronizing denormalized caches

Module 7: Scalability and Flexibility
In order to enable agility, services must be able to scale up, out, and down quickly. In this module we’ll see how queues simplify monitoring solutions while at the same time connecting them to service-level agreements, as well as how this architecture can be capitalize on the capabilities of the cloud in order to create self-tuning systems.

Scaling heterogeneous server farms
Monitoring queues for SLA
Rolling deployment and versioning

Module 8: Long running processes
The distributed communications patterns wouldn’t be complete without a discussion on orchestration. In this module we’ll see how to manage the state of long-running distributed communication flows as well as:

Encapsulating process logic
Advantages & disadvantages of orchestration
The connection of time and messaging

Module 9: Service Layers and Domain Models
Logic-rich services require the use of advanced techniques for logic componentization. The Domain Model Pattern enforces a high level of Separation of Concerns, yet it must eventually be connected with Service Layer code that supports many concurrent users. In this module, the topics covered will include:

Business Logic inside and outside a Domain Model
Transactions, Isolation Levels, Concurrency Models
Testing Domain Models

Module 10: Ultra-scalable Web Apps
As more web apps are put under the pressure of growing user bases, performing more complex tasks upon larger quantities of data, standard caching techniques are not able to handle the task by themselves. In this module, students will learn how to leverage the entire web as a cache, use Content Delivery Networks, in combination with the messaging shown in previous modules:

Composability & Cacheability of dynamic content
Scalable personalized data
Integrated messaging & pub/sub for caching sensitive data

Module 11: Summary & Review
In order to make sure that attendees are able to put into practice all that they’ve learned throughout the course, here we strengthen the seams between the various topics. Q&A is also a core part of this final section.
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[Update Links] Advanced Distributed Systems Design using SOA & DDD | udidahan

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