Microservice Use Case Example


Date and Time Pattern Strings Support for the Contains Operator of Each Source Type. In that case, you will need to roll your own solution. What does Use Case mean? Information and translations of Use Case in the most comprehensive dictionary definitions resource on the web. This article provides an introduction to Spark including use cases and examples. Here are some examples that may be useful to you: Iteration/Release. How to use case statement in scalar valued function in sql [Answered] RSS 2 replies Last post Feb 23, 2011 05:58 AM by KumarHarsh. It includes real examples of organizations that use Health Information Exchange to share patient data, as well as theoretical cases. One use case to have it on two separate microservices is to be able to scale out querying (or vice versa). Examples of Unstructured Data – Use Cases on Object Storage. Microservice architecture is a form of service-oriented architecture (SOA) whereby software applications are built as a collection of loosely coupled services, as opposed to one monolithic software application. Using the use case model, an analyst can better combine the needs of users and the behavior of the system during its operation. Delivering them, however, is another matter. Use cases of recommendation systems have been expanding rapidly across many aspects of eCommerce and online media over the last 4-5 years, and we expect this trend to continue. Only values that are equal to the signal in the case test can be used. Case Examples The Cornell University Law School Immigration Appellate Law and Advocacy Clinic (previously the Asylum and Convention Against Torture Appellate Clinic) began in 2003. Transition architecture, where strongly typed relations are replaced by loosely coupled ones, and core customer application is duplicated and/or changed to provide a new type of services to departments. Generalized Anxiety Disorder. In our previous article, we talked about the true meaning of machine learning. Now, let us look at a use-case to get a better understanding of microservices. There is no one size fits all. For Docker EE 17. Let's say your existing server is built in Python using Flask, and you want to use Node to write a particular endpoint of your website in JavaScript. Scale their service the way they see fit. The first step in defining a use case is to define the name, using the verb-noun naming convention. In short yes. Introducing to Microservice: How to design a microservices using micro service architecture. , go against the point that a service should do only one thing, and do it well), as a hybrid is unlikely to have the sophistication of a good load balancer (think F5 BigIP or NetScaler) and the. Amazon SQS SSE integration with AWS Key Management Service (KMS) allows you to centrally manage the keys that protect SQS messages along with keys that protect your other AWS resources. I was looking for Apex code examples/samples and use cases in google, but couldnt get any. 2 Trading Use Case Overview 7 Process Workflow for Alerting Trading. When a new microservice is deployed a bootstrapping process ensures the microservice is seeded with a new private key so it can join the network. Examples of the. 2, refer to RBAC Example Use Case. AI applications are shaping every industry & business function. Ruby Case & Regex. For example, if your services aren't reusable and are specific to your application, is there really a point in building it as a microservice service rather than a part of your monolith, thus increasing the. There are many benefits with this approach such as the ability to independently deploy, scale and maintain each component and parallelize development across multiple teams. For example, the following overrides the defaults, using the tab character instead of comma for the separator, using a single quote instead of a double quote, and two backslashes for the escape character:. Use-Case: Shopping Cart Application. xml for the device type Linux/Generic. Note that MySQL has a CASE statement that you can use only in stored programs such as stored procedures, stored functions, events and triggers, which is not the CASE expression covered in this tutorial. Curate this topic Add this topic to your repo To associate your repository with. The application is a web-based e-commerce app called "Hipster Shop" where users can browse items, add them to the cart, and purchase them. With use cases in level 4, you can obtain real-time risk insight and automate responses to advance your security operations. In this tutorial, I will use a simple example to show how Spring Boot can be used to set up a REST-based microservice with Spring Boot. For example, if you use Stoplight's visual API designer, you can create OpenAPI descriptions of each microservice and share them with your team. Name microservice to functionality it performs - Certain microservices are taking care of certain processes and therefore the use of verbs in the service name is common. Similar to a Gateway service, an Adapter consumes messages, then uses that data to invoke a library on the system. There are exceptions to this. One annoyance with case statements is that VHDL does not allow the use of less than or greater than relational operators in the "when" condition. This is related to the eventual consistency case and the additional microservice case: a microservice handles changes in one part of the system (either by. For example, we presented how a. For the Graph Visualization we use d3. Applying Use Cases: A Practical Guide (2nd Edition) [Geri Schneider, Jason P. Also during this phase, I am going to make the most of my time to get used to evolved technologies and platforms and to set up the development environment for the next period of time to design and build the system for the brief use case. The basic course is the simplest course, the one in which a request is delivered without any difficulty. Microservices Tutorial. A microservice is particularly adapted for that use case because some of the services required such as dynamic planner service, crowd-sensing service and travelling service already exist (or can. At the end, you will be able to create a table, load data to the table and perform analytical analysis on the dataset provided in Hive real life use cases. A microservice purist may argue that a hybrid solution means you're less likely to get the best registry solution or the best load balancer (i. This site uses cookies for analytics, personalized content and ads. Our many uses case examples in these areas demonstrate the power of DataRobot. Customer Use Cases. A (micro)service provides the execution logic for a single capability and 3rd generation API Management provides the means to control the exposure of each service to the outside world, and potentially between the (micro)services as well. And I'll also list a few use cases for building real-time streaming applications and data pipelines. You want the team for each microservice to choose the database that best suits the service. I will first describe a use case implemented with service discovery. Sample Research; Sample Domain Monitors Finally, Some Concrete Use Cases for Telehealth summarizes a recent study by the Agency for Healthcare Research and. Talk to us directly on the enterprise contact form Or if you’re ready, follow our step-by-step guide to start building a Serverless Application with your favorite language. For example, ‘not enough bread at breakfast’ or ‘room service is too slow’. An example of this might be using a graphics manipulation tool like ImageMagick. "Subscribe to Free Training. Sample REST API Calls and Use Case Descriptions © Copyright IBM Corp. You can use an asynchronous architecture to solve the distributed data management challenges in a microservices architecture. Synonym Discussion of case. This example from Baremetrics offers a lifetime discount to users that upgrade earlier. Case study 1. Mixed Use Case Study #2 •Park East Enterprise Live‐Work Lofts •85 “Live‐work” Lofts targeted Entrepreneurs •3,000 Square Feet of Retail •Retail “Master Leased” by Developer, but Much Lower Financial Exposure •Residential of 1st Floor, but Activated Street Other Ways. Microservice Patterns & Best Practices. 0 on this repository. js bindings. It is also too expensive and not designed for the long-term archive use case. Netflix handles around 40% bandwidth of the whole internet consumed worldwide, Airbnb has most number of rooms available in the world, Uber has most number of cab. Below, are examples of three use cases with increasing levels of complexity. In the context of building applications, DDD talks about problems as domains. Do not use the same backend data store across microservices. Netflix can be considered as one of the early adopters of this trend. Business Case Examples. Example 1 – Simple Use Case 2 We can use Use Cases in other contexts, for example to describe some common framework code or an infrastructure subsystem. By continuing to browse this site, you agree to this use. The other microservices are now separated out and each development team working on their microservice can: Deploy their service as frequently as they wish without disrupting other teams. Microservices are an excellent option for situations where developers can’t fully predict what devices will be accessed by the application in the future, and they allow quick and controlled changes to the software without slowing the application as a whole. Now that we've introduced the microservice architecture, discussed some of the benefits, respective challenges and looked a few examples of how microservices have been deployed in the real world, it's time to look at a basic microservice in terms of its architecture and how it can be designed. Use Cases: Background, Best Practices and Benefits Page 4 of 8 Figure 2: A complete use case model includes a diagram and textual descriptions Another pitfall when adopting use cases is ambiguity over the relationship between use cases and the rest of the requirements for the system. The course consists of four lectures plus a case. The CASE expression has two forms: simple CASE and searched CASE. Example UML Use Case diagram. ' END Use of CASE Expression. The following diagram shows an example of the architecture transition, from a monolithic to a microservice application, applied to our use case. For example, the solar company could build an Analytics 360 audience of users who filled out a lead form online and then were assigned an Einstein Lead Score of 80 or higher. See Writing Use Cases: Exception or Alternate Flow?. Common functionality that appears in multiple use cases can be split out into a separate use case that is included by the ones that need that common functionality. One approach is to partition services by verb or use case. Business Use Case Template. More and more monolithic applications are being refactored or rewritten using the microservice architectural pattern. Robotic process automation (RPA) is rapidly changing the accounting and finance operations, arguably faster than any other piece of modern technology. Try the following exercises (from IRM’s Modelling Requirements with Use Case & the UML workshop) to test your skills. See Writing Use Cases: Exception or Alternate Flow?. Use case diagrams depict: Use cases. Exercise 1 – Course registration. Additional constraints were added whenever needed for analysis or concept discussion. Using the Use Case Identification method, we can determine that the actor is the customer. Posttraumatic Stress Disorder (PTSD) Return to Case Studies Case study 4. These services are built around business capabilities and independently deployable by fully automated deployment machinery. Related use-cases can be grouped in the hierarchy. Let's look at some of the success stories to see the result. Case definition is - a set of circumstances or conditions. These can be described in prose, but flowcharts or UML activity diagrams are frequently a more useful way to represent the logic flow. A transaction use case is started within a session when the customer chooses a transaction type from a menu of options. You can use a CASE expression in any statement or clause that accepts a valid expression. The trace ID contains a set of span IDs, forming a tree-like structure. In this example, each microservice is focused on single business capability. Use Cases for Example ATM System Flows of Events for Individual Use Cases System Startup Use Case The system is started up when the operator turns the operator switch to the "on" position. That way, keys can be replaced on the UAA and the services will catch up. Enriching Other Security Technologies by Integrating Threat Intelligence. From the project root, navigate to the spring-cloud-microservice-example/docker directory. Use Case Examples for Services & Personas VMS/MSP/SOW Field, MCM, and Mobile MSP • Contracts Compliance • Contractor Sourcing Process Management • Resume Submission & Scoring • Rating & Feedback • Competitive Bidding & Reverse Auction Functionality • Personnel Credentialing & Licensing • Pre-Employment Screening Compliance. While this approach to user management may work for some organizations, it is simply not viable. Use cases provide a beneficial means of project planning because they clearly show how people will ultimately use the system being designed. Microservice use cases A microservice is not a silver bullet and will not solve all the architectural challenges of today's world. It has a thriving. 4, Update Article. According to Martin Fowler, the following prerequisites must be fulfilled before you move a monolithic application to the microservice architecture:. For certain online and mobile commerce scenarios, Sears can now perform daily analyses. One use case, complete with alternate and exception cases, might be supplanted with a "happy path" acceptance test plus a number of corresponding but separate alternate and exception tests. These nanoservices have different advantages and disadvantages to microservices, which, for instance, are implemented using technologies presented in Chapter 13, "Example of a Microservice-based Architecture. For example, in the preceding OrderAggregate code example, there are several private fields, like the _paymentMethodId field, that have no related property for either a setter or getter. For Example, the social media profiles, emails. So how about keeping your copies of reusable code within each Microservice as required and use a tool to synchronize the changes. USE CASE EXAMPLE FOR DATADVANTAGE FOR WINDOWS Fixing Permissions You can use DatAdvantage to fix permissions by working with data owners for strategic input, and by using the. I hope that you have read my previous blog on What is Microservices that explains the architecture, compares microservices with monolithic and SOA, and also explores when to use microservices with the help of use-cases. There is an assortment of frameworks available which can be utilized in a microservices Architecture. In most microservices based applications use simple text based message formats such as JSON and XML on top of HTTP resource API style. Use Cases for Example ATM System Flows of Events for Individual Use Cases System Startup Use Case The system is started up when the operator turns the operator switch to the "on" position. These are important because they are easier to understand and act upon. Simple, effective security. The Tale of the Traveling Umbrella Salesperson. The use case’s specification details how the use case’s overall goal is broken down into its own mini goals, represented by steps and groups of steps. Cockburn Page -6- Humans and Technology HaT TR96. However, some organizations do use both; and some authors say that use cases are derived from a software requirements specification (SRS), whereas other authors say just the opposite. For an example, we might need to place NULL values at the end of query result set. The microservice architecture pattern language is a collection of patterns for applying the microservice architecture. For our purposes we have defined them as Simple, Middleweight and Heavyweight use case for doing the. To take advantage of network automation use cases, a network engineer could use homegrown Python scripts, Ansible playbooks or a proprietary automation platform. For example, we presented how a. Another reason for a different technology per microservice might be the nature of each microservice. Each use case is a sequence of simple step that start with a user’s objective and end when that objective is achieved. When thinking about your deployment options you must take into account the use case, project requirements, project size, team skills, & budget. Use case is very specific and dialed in, in terms of how that user actually interacts with that software system to achieve a goal. For this first post in the series, we'll be looking at the four-layer model of microservice architecture. A practical, comprehensive, and user-friendly approach to building microservices in Spring About This Book Update existing applications to integrate reactive streams released as a part of Spring 5. For example, in the preceding OrderAggregate code example, there are several private fields, like the _paymentMethodId field, that have no related property for either a setter or getter. Now that we've introduced the microservice architecture, discussed some of the benefits, respective challenges and looked a few examples of how microservices have been deployed in the real world, it's time to look at a basic microservice in terms of its architecture and how it can be designed. For example: "You are the new director of the company. Be prepared for the operational complexity that the microservices architecture involves. Switch allows you to choose between several discrete options. Case Statement - Verilog Example. Open a new terminal window and make a request to the example application: curl localhost Hello Linode! This page has been viewed 1 time(s). On appeal, the Eleventh Circuit rejected the 10% standard and emphasized the importance of a flexible case-by-case fair use analysis. In today's post, I'm going to briefly explain what Kafka is. The case expression can be used anywhere scalar expressions are allowed, including in WHERE and HAVING clauses of the select statement. com also applies a combination of X-, Y- and Z-style scaling to the database tier. Repeat the steps 2 through 7 for all other users. Netflix, eBay, Amazon, the UK Government Digital Service, Twitter, PayPal, The Guardian, and many other large-scale websites and applications have all evolved from monolithic to microservices architecture. After this we'll extend the hello world example to use a resource ("Hello World. the use case – neither the employees such as warehouse and delivery staff, nor any tems (computerised or otherwise) involved – because they are “inside” the Use-Case. Look for commonalities among the use cases. Use Case Notes. But it has proven itself to be a better alternative to the old monolithic. Also, they can use a different storage type for data storage. Where is the future of all this automated tech taking us? Conversa Health’s Phillip Marshall and Therachat’s Kouris Kalligas weighs in on five use cases for chatbots in healthcare. Decomposition by resources - in this case, microservice covers all operations of a specific field. Level 4: Act. The actor’s function is to provide personal information to complete his/her profile. public API public API RDS MySQL Microservice A Microservice B Amazon Elasticsearc Service Principle 2: Use the right tool for the job (Embrace polyglot persistence) 29. Now, let us look at a use-case to get a better understanding of microservices. Use case The sample application has three services namely service-one, service-two and service-three. For example, later on you will see that the partitioned online store has a Checkout UI service, which implements the UI for the checkout. For example, directors, employees, etc. » Use Cases Before understanding use cases, it's useful to know what Terraform is. Lucidchart comes populated with an extensive shape library for every UML diagram type, including activity diagrams, class diagrams, and use case diagrams. A healthcare use case for Business Rules in a Microservices Architecture [+source code]. This means that the development team can be trained using the vertical slice as a case study. Step 1: Create a new microservice in the repository. Creating a Web Service With User-Defined Data Types. A microservice may run in a container, but it could also run as a fully provisioned VM. It is also too expensive and not designed for the long-term archive use case. One use case to have it on two separate microservices is to be able to scale out querying (or vice versa). In cases, where we need binary message formats (text messages. The microservice architecture pattern language is a collection of patterns for applying the microservice architecture. You may use any data type in the expresssionList. For example, ‘not enough bread at breakfast’ or ‘room service is too slow’. The other microservices are now separated out and each development team working on their microservice can: Deploy their service as frequently as they wish without disrupting other teams. Used by Manage customer relationship (use case 2) Preconditions We know Buyer, their address, and needed buyer information. Designing use case The designing use case was generated from the analysis of functional requirement. Instead, RentLenses. Be careful when passing additional information, if you like to go deeper on this topic with a real use case, you can read Using JWT for State Transfer Jwt. A healthcare use case for Business Rules in a Microservices Architecture [+source code] A Business Rules Management System (BRMS) is a perfect complement to a Microservices Architecture. A specification (often a list of "shall" statements) is yet another. Code example here. Microservice Architecture organizes applications as an assortment of loosely coupled services. • An ordering microservice, which is a domain-driven service that implements domain driven design patterns. For example a service that orchestrates the device registration could be called RegisterDevice. 26) Sample in table format: USE CASE 5 Buy Goods Goal in Context Buyer issues request directly to our company, expects goods. As each microservice can have its own store, then you could imagine using Cassandra (which is known to be very efficient in writing) for persisting and Elasticseach for read (which is known to be very efficient in reading). These operations can also be developed in different languages depending on the use case, so a message-board service can be built in Ruby, and the service delivering them to different users can be built on Node. Define specifically the goals of the primary user of the system. 7 Modelling the relationships between use cases 1. User stories with associated acceptance criteria are another. How does it change the approach from the common imperative method of writing code? In this article, I've tried to apply the Reactive approach starting from a legacy code. " These are some of the ones we have for Bridging the Gap. Other database sanitization and maintenance use cases. Hospital Reception subsystem or module supports some of the many job duties of a hospital receptionist. A common mistake for people to make is to identify one use case they know they need, but miss related use cases. Let’s say your existing server is built in Python using Flask, and you want to use Node to write a particular endpoint of your website in JavaScript. USE CASE EXAMPLE FOR DATADVANTAGE FOR WINDOWS Fixing Permissions You can use DatAdvantage to fix permissions by working with data owners for strategic input, and by using the. Note that "SuD" stands for "System under Development" (sometimes referred to as System under Discussion). Use Case formats and contents may vary based on system requirements, organizational standards, or unique situations. In short no. Sample Use Case: Overseas Military Deployment. Google uses this application to demonstrate use of technologies like Kubernetes/GKE, Istio, Stackdriver, gRPC and OpenCensus. Case Examples The Cornell University Law School Immigration Appellate Law and Advocacy Clinic (previously the Asylum and Convention Against Torture Appellate Clinic) began in 2003. When (not) to use a use case diagram. There are number of similarities between a serverless architecture and a microservice. Enterprise Information Management Use Case Wiki. Attendees) that the other does not. Some microservices would expose an API that's consumed by other microservices or by the application's. Then, share your personal AutoRemote URL with your wife and have her send stuff she needs you to buy like “shop=:=carrots and ice cream”. A cyber resiliency use case enables clear. The drag-and-drop interface is responsive and easy to learn. You can edit this template and create your own diagram. Multiple programming languages can be used for coding them. The reasons for implementing a BRMS are even more compelling in a Microservices Architecture. Because of the wide applicability of AI across the economy, the types of use cases with the greatest value potential vary by sector. Use-Cases are fundamentally in text form. Plan an online demo at a time that suits you and witness the power of Uptrends in 30 minutes! You won't regret it. Chapter 6 / Lesson 8. This is a good use case for microservices architecture. 9 Sharing behaviour between use cases. Future versions of the ODM may expand this list. Another way to look at it is a use case describes a way in which a real-world actor interacts with the system. Use PDF export for high quality prints and SVG export for large sharp images or embed your diagrams anywhere with the Creately viewer. Besides the circumstances described above, one of the biggest lessons learned was understanding when to use service-to-service communication patterns as opposed to what I call asynchronous patterns. A use case can be written to describe the functionality of any business process or piece of software or technology a business uses. I hope this post will help you understand some of the different architectural approaches that you can use to implement a scheduled microservice in the cloud. 0 on this repository. If it's too small, I'll wind up with too many use cases and it'll be hard to see the big picture. A UML Deployment Diagram showing nodejs microservice architucture. The Tale of the Traveling Umbrella Salesperson. There are a variety of ways you can use a data lake: Ingestion of semi-structured and unstructured data sources (aka big data) such as equipment readings, telemetry data, logs, streaming data, and so forth. User stories with associated acceptance criteria are another. The above figure shows two uses cases: "Make appointment" and "Perform medical tests" in the use case diagram of a clinic system. They have their strengths and drawbacks (thankfully more strengths) and there are many more examples of when they are appropriate to use than not. One annoyance with case statements is that VHDL does not allow the use of less than or greater than relational operators in the "when" condition. They do not capture the non-functional requirements easily. The shown code in this tutorial is simplified. Now that we've introduced the microservice architecture, discussed some of the benefits, respective challenges and looked a few examples of how microservices have been deployed in the real world, it's time to look at a basic microservice in terms of its architecture and how it can be designed. The following books (available on amazon) are recommended on use cases: Use Case Training. Check out all the different use cases for serverless applications. This free case manager job description sample template can help you attract an innovative and experienced case manager to your company. Non-software USE CASE examples - USE CASE for other systems. You can fork the repository to try out this sample yourself or just follow the instructions below to configure your own use case. In only 16 percent of use cases did we find a “greenfield” AI solution that was applicable where other analytics methods would not be effective. Step 1: Create a new microservice in the repository. Whether you work for sales, marketing, customer service, operations, HR or tech, you can find many AI use cases. Use-Case: Shopping Cart Application. Many thanks to Lynsey for sharing this work with us and. These approaches can be categorized into two categories: build-time and run-time. Here are the use case links: • Use Case 1 ARTS Club Elite Member October Bonanza • Use Case 2 ARTS Club Hardware Handyman Promotion. It tackles the problem of complexity by decomposing application into a set of manageable services which are much faster to develop, and much easier to understand and maintain. js and Seneca to create a microservice online. Your customers are looking for exceptional experiences. [rev_slider alias=”use-case-demos”][/rev_slider]. To phrase this definition in another way, a use case describes the system’s behavior as it responds to a series of related requests from an actor. 06 and UCP 2. Reactive programming has been changing the way we develop code in our solution. A use case diagram doesn't go into a lot of detail—for example, don't expect it to model the order in which steps are performed. The most obvious use cases are those of a CPU or RAM intensive part of the application. The present report intends to 1. This is an example of web application comprising of several components communicating to each other. Whether you should take an exception or an alternate flow depends on the condition’s outcome. Contacts Widget Use Case Parameters Who Web Application Engineer What Build a drop-in Contacts widget, which has a pre-defined appearance and shows a list of your contacts, with a way to change the widget to compact or full view and to tell the widget to refresh its state. Domain-driven design (DDD) advocates modeling based on the reality of business as relevant to your use cases. The EA example will clearly show how things work. Kanban Tool Use Cases is an online collection of use cases and customer stories on application of Kanban in game development, marketing, project management. Use Case Template with EPOS example; see EPOS Use Case document. Engines come with supporting tools, for example the. For example: "You are the new director of the company. For example, if your application is a newsletter software, than functions like 'adding new subscribers', 'checking how many subscribers you got this week' and 'checking which subscribers clicked on a given newsletter' could all be separate, dedicated microservices corresponding to their own endpoints within the same API. Book publishing use case diagram example. Microservice, Monolith, and Serverless are some of the three architectural styles that have recently gained popularity. second hand tobacco smoke) and an outcome (e. A use case suite is an organized table of contents for your use cases: it simply lists the names of all use cases that you intend to write. Actor specifies a role played by a user or any other system that interacts with the subject. The Direct Debit Guarantee could make these a target for fraudsters. A basic event is what occurs most of the time in the system; where an exceptional event is less likely to happen but could occur. The other microservices are now separated out and each development team working on their microservice can: Deploy their service as frequently as they wish without disrupting other teams. Teo KK(1), Ounpuu S, Hawken S, Pandey MR, Valentin V, Hunt D, Diaz R, Rashed W, Freeman R, Jiang L, Zhang X, Yusuf S; INTERHEART Study Investigators. In this page, you will learn how to draw an excellent user case diagram with pre-made shapes and smart connecting. The basic course is the simplest course, the one in which a request is delivered without any difficulty. Displays the event class used for creating the Orchestration action, in this case the value is ALARM. There are number of similarities between a serverless architecture and a microservice. Keep the steps. Find out how we can transform your business into an experience business. Only values that are equal to the signal in the case test can be used. Examples of Microservices. Use of our developer platform requires that you review and agree to our Developer Agreement and Policy, as well as our related policies, including the Display Requirements and Automation Rules. Each application uses X-axis splits and some applications such as search use Z-axis splits. "Microservice versioning is often discouraged because it can lead to other (client) services pinning to specific versions of a microservice that may not be the best or most updated version of the microservice. A final benefit of microservice architecture is the fact that it is highly evolutionary. Use Case Template A. The fifth and final use case for AI is creating next generation virtual reality assistants. Save and close the Microservice editor and attach the Microservice to the managed device used for this use case. This use case diagram is a visual representation of the prose scenario shown above. Sample Use. Decomposition by use case - i. The results show that microservice architectures can reduce complexity and time-consuming process steps and make the automotive software systems prepared for upcoming challenges as long as the principles of microservice architectures are carefully followed. Through a series of performance and reliability improvements, we were able to scale Spark to handle one of our entity ranking data processing use cases in production. These architectures describe IT architectures, but I will describe towards the end of this blog the corresponding Enterprise Architecture artefacts, which are sometimes referred to as Zeta architecture. writing of both use case exposed in the chapter 1. Explore references, case studies & detailed descriptions to understand these use cases & identify leading vendors. Business Use Case Template. Use Cases Exegy has earned the trust of an elite community of leading proprietary traders, market makers, hedge funds, asset managers, alternative trading systems, and agency execution businesses. Now, let us look at a use-case to get a better understanding of microservices. See a nested Select Case. The Handle Claim business use case is not complete unless it includes a notification about the decision from the insurance company to the customer and (if appropriate) a compensatory payment.