Application Architecture : Azure Architecture Styles

Azure Architecture Styles

Cloud computing is becoming a rage and software companies are in full swing adopting it. They are definitely growing in the way of networks and diverse cloud services that work for dissimilar organizations.  As, constructing applications in the cloud provides you the knack to write extremely available, highly scalable applications, and services that are resilient to disaster. Here, Microsoft Azure for the software Developers – Cloud Patterns and Architecture, you will learn various architectural approaches to building cloud applications, and see how various Windows Azure services and resources fit into those architectures. First, a lot many firms are getting into the shell to understand the concept of architectural styles available and its part as a business advantage and in what way an organization can be migrated towards an apt style. However, transitioning to a specific architectural style generates substantial challenges for firms.

Confusion in selecting an architecture style is a thing of the past

Collection of architectures sharing some features generally can be termed as an architecture style. A lot of architectures like N-tier, Microservices architecture are on the go and gaining favour. Technologies are selected according to the compatibility of the architecture styles. This can be well understood by an example that containers are an apt selection for Microservices architecture. Identification of architecture styles that are usually found in cloud applications is necessary to understand the advanced concerns of their usage for a successful deployment. However, with so many architecture styles available, it becomes difficult for the prospective clienteles to select and pick up a particular style. As a matter of fact, architecture style is a recognized recyclable way out for identified difficulties for saving huge cost and reduction of the possibilities. Software expansion can gain profit from architecture style that is spot on. As a consequence, architecture style choice is imperative while planning software arrangement.

To help selecting an architectural style, let us understand the myriad styles in detail, the benefits and challenges that they have to offer and best practices. Based on the pointers of the logics behind these styles, choose suitable technologies and put on applicable design patterns and recognized practices.

Microservices

For a more intricate realm, this style is preferred. Microservice architecture, or just Microservices, is a unique way of developing software structures that attempts to emphasize on constructing single-function parts with definite interfaces and setups.

Fig1: Microservices Architecture

It has gained momentum in the past few years as firms have started looking to become more Agile and move towards a DevOps and continuous testing. Microservices can help build accessible, testable software as a set of small services, each running in its individual procedure and are individually deployable, as shown in the figure given below. Though it is a little difficult to construct, but if done correctly it can tip to advanced release rate, quicker improvement, and a more resistant architecture.

N-tier Style

Fig 2:N-tier architecture

N-tier data applications are divided into numerous tiers. They are also known as distributed applications and multitier applications. N-tier applications detach processing into distinct tiers that are scattered in the middle of the client and the server. A classic n-tier application consists of a presentation tier, a middle (application logic) tier, and a data tier, as shown in the diagram.

 Web-Queue-Worker

This one is best suited for PaaS Solutions. The Web-Queue-Worker architecture is normally executed by means of achieved compute services, either Azure App Service or Azure

Fig 3: Web-Queue-Worker Architecture

Cloud Services. It can be considered for applications having a simple domain. Just like N-tier, with a simple user interface, this architecture can be understood easily. The primary modules of this architecture are a web front end that assists customer requirements, and a worker that carry out resource-intensive responsibilities, long-running workflows, or batch jobs. The web front end connects with the worker through a message queue, as shown in the diagram below.

Event-driven architecture

Fig 4:  Event-driven architecture

An event-driven architecture (EDA) is a structure that coordinates activities around the making, finding and depletion of events in addition to the reactions they bring to mind. An event is any recognizable incidence that has importance for both, system hardware or system software. All and all, an event-driven architecture is made of event initiators that produce a stream of events, and event consumers that take note of the events, and it is best suited for applications that process a huge volume of data. This can be understood with the help of a diagram given below.

CQRS

Normally, this architecture consists of two parts: the command-side and the query-side. The command-side handles build, inform, and delete requests and give off events when data fluctuates. The query-side handles requests by implementing them in contrast to one or more turned up interpretations that are retained modern by pitching in to the stream of events released when data fluctuates. To conclude it is a form that separates the operations that read data (requests) from the setups that inform data (commands) by means of distinct interfaces, as shown in the figure given below.

Fig 5:CQRS Architecture

It is recommended that before deciding on an architecture style, you need to comprehend the fundamental philosophies and limitations of the selected style. This exercise is a must to get the best results and accomplish the complete prospective of that style. Contemplate the various ins and outs of the selected style and then only go ahead. Let us delve into the ins and outs to know the compromises.

Think through obstacles and profits

Prior to the selection of an architectural style, pondering on the various considerations given below will definitely provide the desired results and will help in selecting an apt architecture style.

• Difficulty level of the architecture must be checked and according to the domain, it must be selected. This is suggested as we are aware of the fact that the architecture does not aid you to cope up with the needs quickly.
• Inter-service communication – When an application is broken into separate services, then there is a possibility of network congestion or an unacceptable latency triggered by communication amid services. And, Microservices architecture is the best example of this happening.
• Viability or feasibility also must be considered so that the application can be managed, monitored and updates can be deployed in a smooth fashion.

Decide the boundaries and then monitor the performance based on the pointers described above. This line of attack allows the firm quickly modify in reply to changing business request, without butting in essential happenings. In addition, it makes it stress-free to on-board fresh staff rapidly. It is not distinct part apprehended by a solo person or set of persons. Relatively, it offers the arrangement required to help operations and development work in tandem. After all, it is a team effort.

Conclusion

Smart devices and burst of data clubbed with one-click-away customer know-how is asserting the application architectures to give a face-lift. As a result, customers request change and choice with always on services from time to time. This encourages the point that the old-style software architectures, deployment prototypes and slow release procedures are not going to meet your requirements. This is suggested so that you all have the patterns and architectural knowledge you need to build scalable, resilient cloud services and applications. From the time when cloud computing has become generally available to the many, it has encouraged, compelled, or been answerable for a vast range of new computing technologies and applications over the past few years. It has definitely changed the way applications are designed. On the other hand, these trends are throwing new challenges and a demand for resilient systems is cropping up to combat failures. And Azure application architecture is there to help you sail across these variations.   From N-tier architecture to Microservice architecture, choose the suited technology for that particular architecture according to the need.
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