This document discusses event sourcing for React-Redux applications. It introduces event sourcing as an architecture where commands trigger events that are stored in an event log, and views are updated by processing the event log through projections. It provides examples of using event sourcing with React-Redux, including storing events in a database, using command and query services, and updating views through projections driven by pushed events.
We're leveraging and Understanding AWS Cognito Identity Pool, and also we're going to look upon how we can implement and Integrate the same with SAM and in our Frontend application - BookStore.
Arsitektur Aplikasi Modern - Faisal Henry SusantoDicodingEvent
Baparekraf Developer Day adalah kegiatan yang diadakan oleh Kementerian Pariwisata dan Ekonomi Kreatif/Badan Pariwisata dan Ekonomi Kreatif (Kemenparekraf/Baparekraf) dengan tujuan mengasah kemampuan teknis pengembang aplikasi di Indonesia. Kegiatan ini memungkinkan transfer pengetahuan dan standar industri secara langsung dari para praktisi yang telah sukses, khususnya pada bidang pengembangan aplikasi.
Back-End Session
Tema: Arsitektur Aplikasi Modern
Speaker: Faisal Henry Susanto (Praktisi IT)
All Things Cloud Native Meetup: Azure Kubernetes Service BasicsNico Meisenzahl
Containerized applications have become tremendously important in our everyday life. Learn everything about Kubernetes and how you can run it in the Azure Cloud. In this talk, Nico will explain how Kubernetes works and how it can help to run Containers in production. You will learn everything about Azure Kubernetes Service, Azure Container Registry and Azure Container Instances.
Global Azure Virtual: Container & Kubernetes on AzureNico Meisenzahl
Containerisierte Anwendungen sind zu einem festen Bestandteil unseres Alltags geworden. Erfahren Sie alles über Containern und wie Sie diese in der Azure Cloud betreiben können. In diesem Vortrag erklärt Nico, wie Container funktionieren und zeigt Ihnen welche Probleme diese in Ihrem Alltag lösen können. Im Anschluss erfahren Sie, wie Kubernetes Ihnen helfen kann, Container in Produktion zu betreiben. Lernen Sie die Grundlagen sowie Best-Practises kennen, die Sie direkt umsetzten können! Abschließend werden Sie die Möglichkeiten der Azure Container Services kennenlernen. Nico wird hierbei insbesondere auf Azure Kubernetes Service, Azure Container Registry und Azure Container Instances eingehen.
Docker Rosenheim Meetup: Policy & Governance for KubernetesNico Meisenzahl
In diesem Meetup möchten wir euch einen Überblick über Policy und Governance für Kubernetes geben. Hierbei gehen wir auf das Open Source Projekt Open Policy Agent Gatekeeper ein und zeigen euch wir ihr diesen nutzen könnten.
Flux is a simple and powerful data model for React, but I'm not convinced it is the best answer for modeling data flows in a front-end application. Learn how ideas inspired by functional programming and Om like immutable data and cursors can help you make it easier to reason about your application.
Azure Functions is a serverless compute service that enables you to run code-on-demand without having to explicitly provision or manage infrastructure. You can use Azure Functions to run a script or piece of code in response to a variety of events.
Event-Sourcing your React-Redux applications - Maurice de Beijer - Codemotion...Codemotion
Most React-Redux applications store the work in progress as is in a database. It is fine to treat objects like this in a small application. But this is not optimal when applications are complex. Prefer the CQRS design pattern for more complex applications. Combining this with Event-Sourcing is an even more powerful solution. Event-Sourcing ensures that every action is stored as a separate domain event. These domain events are the CQRS write model. These events also project into a secondary database. This projection builds the CQRS read model for the application.
We're leveraging and Understanding AWS Cognito Identity Pool, and also we're going to look upon how we can implement and Integrate the same with SAM and in our Frontend application - BookStore.
Arsitektur Aplikasi Modern - Faisal Henry SusantoDicodingEvent
Baparekraf Developer Day adalah kegiatan yang diadakan oleh Kementerian Pariwisata dan Ekonomi Kreatif/Badan Pariwisata dan Ekonomi Kreatif (Kemenparekraf/Baparekraf) dengan tujuan mengasah kemampuan teknis pengembang aplikasi di Indonesia. Kegiatan ini memungkinkan transfer pengetahuan dan standar industri secara langsung dari para praktisi yang telah sukses, khususnya pada bidang pengembangan aplikasi.
Back-End Session
Tema: Arsitektur Aplikasi Modern
Speaker: Faisal Henry Susanto (Praktisi IT)
All Things Cloud Native Meetup: Azure Kubernetes Service BasicsNico Meisenzahl
Containerized applications have become tremendously important in our everyday life. Learn everything about Kubernetes and how you can run it in the Azure Cloud. In this talk, Nico will explain how Kubernetes works and how it can help to run Containers in production. You will learn everything about Azure Kubernetes Service, Azure Container Registry and Azure Container Instances.
Global Azure Virtual: Container & Kubernetes on AzureNico Meisenzahl
Containerisierte Anwendungen sind zu einem festen Bestandteil unseres Alltags geworden. Erfahren Sie alles über Containern und wie Sie diese in der Azure Cloud betreiben können. In diesem Vortrag erklärt Nico, wie Container funktionieren und zeigt Ihnen welche Probleme diese in Ihrem Alltag lösen können. Im Anschluss erfahren Sie, wie Kubernetes Ihnen helfen kann, Container in Produktion zu betreiben. Lernen Sie die Grundlagen sowie Best-Practises kennen, die Sie direkt umsetzten können! Abschließend werden Sie die Möglichkeiten der Azure Container Services kennenlernen. Nico wird hierbei insbesondere auf Azure Kubernetes Service, Azure Container Registry und Azure Container Instances eingehen.
Docker Rosenheim Meetup: Policy & Governance for KubernetesNico Meisenzahl
In diesem Meetup möchten wir euch einen Überblick über Policy und Governance für Kubernetes geben. Hierbei gehen wir auf das Open Source Projekt Open Policy Agent Gatekeeper ein und zeigen euch wir ihr diesen nutzen könnten.
Flux is a simple and powerful data model for React, but I'm not convinced it is the best answer for modeling data flows in a front-end application. Learn how ideas inspired by functional programming and Om like immutable data and cursors can help you make it easier to reason about your application.
Azure Functions is a serverless compute service that enables you to run code-on-demand without having to explicitly provision or manage infrastructure. You can use Azure Functions to run a script or piece of code in response to a variety of events.
Event-Sourcing your React-Redux applications - Maurice de Beijer - Codemotion...Codemotion
Most React-Redux applications store the work in progress as is in a database. It is fine to treat objects like this in a small application. But this is not optimal when applications are complex. Prefer the CQRS design pattern for more complex applications. Combining this with Event-Sourcing is an even more powerful solution. Event-Sourcing ensures that every action is stored as a separate domain event. These domain events are the CQRS write model. These events also project into a secondary database. This projection builds the CQRS read model for the application.
This is my presentation for the Sitecore User Group Conference 2015 about Sitecore MVC Advanced.
A video recording is available on YouTube: https://youtu.be/k3Gd1MW1WXI
The source code is available at GitHub: https://github.com/unic/SUGCON2015
LF_APIStrat17_Breaking a Monolith: In-Place Refactoring with Service-Oriented...LF_APIStrat
"The dirty secret of the microservices movement is the heavy operational burden of service provisioning, discovery and interface specification. For many applications, e.g. those with logically grouped activities or that require single-tenant deployment, microservices are a “bridge too far.” In-place refactoring of monolithic applications with service-oriented architecture presents a 3rd-way between monoliths and microservices. OpenAPI provides the API specification and the supporting tooling ecosystem to define sensible service boundaries at the API-layer, substantially de-risking monolith refactors. We present a “war story”, targeted at software architects and developers, detailing the design and implementation considerations that allowed us to use OpenAPI to “break” our monolithic code-base into sensible services to support our life-sciences partners."
Get the Message Across: Seamlessly Transport Data to Apps, AnywhereVMware Tanzu
Modern applications are built to embrace unpredictability and interconnectivity across multiple clouds, legacy systems, and datastores. So how does one avoid cobbling together a slew of purpose-specific messaging and streaming technologies? How does one ensure consistent configuration of security policies, logging, and access to their distributed applications? And how do we do all that against the backdrop of ever-shrinking development cycles?
Join Jonathan Schabowsky from Solace and Kamala Dasika from Pivotal as they discuss:
- Data distribution challenges when connecting diverse endpoints and systems
- Patterns to help normalize the chaos
- Platform and messaging attributes that are key to supporting distributed architectures
Presentesr :
Jonathan Schabowsky, Sr. Architect in the Solace Office of the CTO
Kamala Dasika, Pivotal
Named similarly as Doug Purdy's PDC 2010 session on oData, this OpenData for the Open Web session tries to explain how WCF Data Service with oData offers an accelerated path towards building a public API.
The Web has been and should be open in almost all sense of the word: the web can be openly consumed from various clients, and through hyperlinking; the web allows the association of different documents across technological boundaries. The trend shouldn’t stop here.
Web based API have and will continue to play a huge role in making sure that the web opens up even more. You will learn on how to take part of this movement in your own projects utilizing oData protocol. We will also talk about to why oData offer serious advantages than writing your own custom API specification to share your data.
We will also talk about some of the opportunities that is opened up to us by using it. In this era of Cloud computing (the emergence of strong SaaS player like Facebook and Twitter), software is starting to become of a commodity and data becomes more and more precious – it’s important for us developers to understand the shift.
A walk through of how Microsoft Azure could platform can be a powerful tool for solution designing, proof of concepts and performance testing. Leverage Azure capabilities and technologies in early development phases in dev/test scenarios without heavy dependence of IT support. Azure can be a DIY model for quick prototyping and gaining visibility into material solution design and architectures.
Similar to Event-Sourcing your React-Redux applications at HolyJS 2016 (20)
In this hands-on workshop, Maurice will personally guide you through a series of exercises designed to empower you with a deep understanding of React Server Components and the power of TypeScript. Discover how to optimize your applications, improve performance, and unlock new possibilities.
Maurice will virtually be by your side, offering comprehensive guidance and answering your questions as you navigate each exercise. By the end of the workshop, you'll have mastered React Server Components, armed with a newfound arsenal of TypeScript knowledge to supercharge your React applications.
Don't miss this opportunity to elevate your React expertise to new heights. Join our workshop and unlock the potential of React Server Components with TypeScript. Your apps will thank you.
Let's face the facts and admit it: Estimating how long it will take to build software is hard.
Why is estimation so hard? Well there are some reasons for that. Many people tend to be optimistic about how long it will take to do a task. Not surprising when we learn the way memory works. It tends to skew our experiences from old projects. We often forget the many small setbacks encountered. Another reason is that many tasks are not included in the initial estimate. They only become visible over time.
Does that mean that estimation is impossible and a waste of time?
Not at all. Many software development activities are commercial activities. Starting something without even a rough estimate of what the costs and timeline will be is risky at best.
Surati Tech Talks 2022 / Build reliable Svelte applications using CypressMaurice De Beijer [MVP]
Tired of having users email you that your Svelte application is broken? Turns out that building reliable applications is hard and requires a lot of testing. You can write unit tests but quite often these all pass and the application is still broken. Why? Because they test parts of the application in isolation. But for a reliable application we need more. We need to make sure that all parts, including the backend API’s, work together as intended.
Cypress is a great tool to achieve this. It will test you complete web application in the browser and use it like a real world user would. In this session Maurice will show you how to use Cypress during development and on the CI server with Svelte. He will share tips and tricks to make your tests more resilient and more like how an actual end user would behave.
Tired of having users email you that your web application is broken? Turns out that building reliable web applications is hard and requires a lot of testing. You can write unit tests but quite often these all pass and the application is still broken. Why? Because they test parts of the application in isolation. But for a reliable application we need more. We need to make sure that all parts work together as intended.
Cypress is a great tool to achieve this. It will test you complete web application in the browser and use it like a real user would. In this session Maurice will show you how to use Cypress during development and on the CI server. He will share tips and tricks to make your tests more resilient and more like how an actual end user would behave.
Building a small to medium size business application with React isn't terribly hard. It has been done lots of times and there is plenty of information about what works and what doesn't. However building a large, complex and mission critical application with React is another matter. How to configure reliable hosting on Azure for the front and back-end? How to track runtime errors that happen in the browser. And how to create an efficient workflow between front and back-end teams. In this session Maurice de Beijer will share his experiences in building a globally deployed application that is used by thousands of people who depend on the availability and proper functioning of the application for a safe work environment.
https://azconf.dev/
With the release of React 18 we finally get the long awaited concurrent rendering. But how is that going to affect your application? What are the benefits of concurrent rendering in React? What do you need to do to switch to concurrent rendering when you upgrade to React 18? And what if you don’t want or can’t use concurrent rendering yet?
There are some behavior changes you need to be aware of! In this workshop we will cover all of those subjects and more.
Join me with your laptop in this interactive workshop. You will see how easy it is to switch to concurrent rendering in your React application. You will learn all about concurrent rendering, SuspenseList, the startTransition API and more.
https://reactadvanced.com/workshops-3h
Building a small to medium size business application with React isn't terribly hard. It has been done lots of times and there is plenty of information about what works and what doesn't. However building a large, complex, distributed and mission critical application with React is another matter. Add occasional poor mobile connectivity and things become really challenging. That doesn't mean that it is impossible, it is just harder to architect and develop. In this session Maurice de Beijer will share his experiences in building a globally deployed application that is used by thousands of people who depend on the availability and proper functioning of the application for a safe work environment.
https://www.c-sharpcorner.com/events/react-virtual-conference2
Building a small to medium size business application with React isn't terribly hard. It has been done lots of times and there is plenty of information about what works and what doesn't. However building a large, complex, distributed and mission critical application with React is another matter. Add occasional poor mobile connectivity and things become really challenging. That doesn't mean that it is impossible, it is just harder to architect and develop. In this session Maurice de Beijer will share his experiences in building a globally deployed application that is used by thousands of people who depend on the availability and proper functioning of the application for a safe work environment.
https://www.meetup.com/nl-NL/tilburg-tech-tuesdays/events/277150883/
Een kleine React applicatie bouwen met een backend is niet moeilijk. Maar wat als de applicatie groter en complexer wordt? Dan wordt het een ander verhaal. En al helemaal als het een publiek toegankelijke applicatie is.
Plotseling blijkt dat allerlei vaak gedane aannames niet meer kloppen. Je krijgt te maken met netwerkstoringen en schaalbaarheid. Verschillende teams die onafhankelijk van elkaar aan de front- en backend werken. Runtime fouten die optreden omdat sommige browsers toch net even anders blijken te werken dan je verwacht.
In deze sessie gaat Maurice de Beijer zijn ervaringen delen over hoe je dit aan kan pakken.
The React team rewrote the book on developing components. Before we had a choice between classes and functional components. Yet many components needed to be classes. A functional component was often too limited. Now, using hooks, we can extend functional components to be as powerful as we want.
Suspense and asynchronous rendering is in the future of React. It will make large applications much more responsive and easier to deal with. Getting started with suspense and asynchronous rendering isn't hard as you will discover.
Come to this session to learn what React hooks are and how to get started using hooks. But be warned, once seen React hooks can’t be unseen and your React components will never be the same again.
Tired of having users email you that your web application is broken? Turns out that building reliable web applications is hard and requires a lot of testing. You can write unit tests but quite often these all pass and the application is still broken. Why? Because they test parts of the application in isolation. But for a reliable application we need more. We need to make sure that all parts work together as intended.
Cypress is a great tool to achieve this. It will test you complete web application in the browser and use it like a real user would. In this session Maurice will show you how to use Cypress during development and on the CI server. He will share tips and tricks to make your tests more resilient and more like how an actual end user would behave.
React keeps on evolving and making hard things easier for the average developer.
One case, where React was not particularly hard but very repetitive, is working with AJAX request. There is always the trinity of loading, success and possible error states that had to be handled each time. But no more as the <Suspense /> component makes life much easier.
Another case is performance of larger and complex applications. Usually React is fast enough but with a large application rendering components can conflict with user interactions. Concurrent rendering will, mostly automatically, take care of this.
You will learn all about using , showing loading indicators and handling errors. You will see how easy it is to get started with concurrent rendering. You will make suspense even more capable by combining it with concurrent rendering, the useTransition() hook and the component.
The React team has rewritten the book on developing components several times. This time they have introduced Suspense. Amongst other thing this makes splitting your application into multiple bundles easier. But that is only the start as the real innovation comes when loading data. Gone are the side effect hooks with the typical loading, loaded and error states. Instead we can suspend components when loading data. Need to do multiple request? No problem you can suspend multiple components at the same time if you want. Need to trap errors? No problem just use a standard React error boundary. Come to this session to learn what React Suspense can do for you.
Reactive and functional programming, you have probably heard the term mentioned before. It’s supposed to be really cool and a good practice. But what is reactive programming exactly and how to get started with it in JavaScript? And why does Angular start using the reactive extensions for JavaScript (RxJS) instead of standard promises?
In this presentation, Maurice is going to show you how to get started with RxJS, the JavaScript implementation of the ReactiveX library. You will learn why using RxJS is a great way of dealing with streams of events in an asynchronous and functional way.
Using restful APIs can be hard on your React applications. Before you know it, you are doing lots of parallel queries to the server. Using GraphQL instead of REST might help a lot. Instead of downloading many complete resources each component declares its own needs. Then the GraphQL client library then combines these requirements. The result is a single optimized query for the server. In this session, Maurice de Beijer is going to show you how to get started with GraphQL in your React applications.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
2. Who am I?
• Maurice de Beijer
• The Problem Solver
• Microsoft Azure MVP
• Freelance developer/instructor
• Twitter: @mauricedb and @React_Tutorial
• Web: http://www.TheProblemSolver.nl
• E-mail: maurice.de.beijer@gmail.com
2
The server is often just a simple gateway with just some validation logic
There is nothing wrong with a CRUD application if the problem domain is simple
http://www.flickr.com/photos/juhansonin/5144239690
A basic React component to show a list of permits
CQRS = Command Query Responsibility Segregation
Use a different model to update information than the model you use to read information
http://www.flickr.com/photos/usnavy/8220344431
Commands should be modeled after business actions
A business user can understand command names and have a reasonable expectation of the outcome
http://www.flickr.com/photos/micahdowty/4630801442
Still storing just the current state
Database structure is often normalized and optimized for updating
Most application read far more frequently then update
The JavaScript command to send to the server
Using Flux Standard Actions
We are still storing only the current state
No trace of how we got there
http://www.flickr.com/photos/danrocha/15602018982
Event Sourcing is a very old idea that has become popular again over recent years.
Invented by Greg Young
Events provide insight into how the system came to be in its current state
The current state is a left fold of the events
http://www.flickr.com/photos/dragontomato/5174914835
Fra Luca Bartolomeo de Pacioli (1447–1517) The Father of Accounting and Bookkeeping
https://en.wikipedia.org/wiki/Luca_Pacioli
Domain Event is something that has happened in the past
The result of a Command to change something
Very similar to the audit trail in a database
http://www.flickr.com/photos/lendingmemo/11747440176/
Invented by Greg Young
No longer storing the current state but all event leading up to it
The current state is a left fold of all events
The projection parts are not really part of ES but CQRS and usually combined
Another service subscribes to the same events
And pushes them to each connected client
Flux has a very similar and explicit way of working with data.
Events are never erased or updated
An append only model
http://www.flickr.com/photos/horiavarlan/4263326117
Events are projected out to the read model
Observed facts = events
Derived facts = projections
http://www.flickr.com/photos/fotnmc/7172465908
A Redux reducer function for a collection of permits.
It calls another reducer for individual permits
Very functional: Old State + Action = New State
A Redux reducer function for a single permit.
The Redux createStore() function creates the store based on the reduce functions.
The React-Redux Provider connects the store state to the root App component.
The React-Redux connect functions makes data from the store available as props for the child React component.
More info:
Greg Young: http://goodenoughsoftware.net/
Martin Fowler: http://martinfowler.com/eaaDev/EventSourcing.html
Daniel Whittaker: http://danielwhittaker.me/tag/event-sourcing/
João Bragança: https://github.com/thefringeninja/derp.inventory
Damian Hickey: http://dhickey.ie/?tag=/Event-Sourcing
https://www.flickr.com/photos/stevendepolo/4582437563/