Unit Testing with State Machines
Blog - HybridCluster

                        
                    
                            
         

                        
                    
                            
                                Benefits of Web Application Development
                            
                            
    
        
            by 
            in Web Application Development
            on December 10, 2023
        
    
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                            Web application development is becoming more crucial for businesses to remain competitive in today’s fast-paced digital world. As the demand for mobile and web applications grows, so does the need for a robust and scalable development process that can deliver high-quality products in a timely manner. Whether you’re building an eCommerce platform, a social media network, or an online booking system, there are a variety of benefits that come with web application development. In this blog post, we’ll explore some of these benefits and explain why businesses should embrace this technology to accelerate their growth. Greater Scalability One of the most significant advantages of web application development is its scalability. Web applications are designed to support large numbers of users and handle high volumes of traffic. This makes them perfect for businesses that are looking to expand their reach and grow their customer base. Scalability is achieved through the use of cloud computing infrastructure, which allows businesses to increase or decrease the resources allocated to their applications as needed. As a result, businesses can easily scale their applications as they grow, without having to worry about performance issues or downtime. Easy Access from Any Device Another major benefit of web application development is that the applications are accessible from any device with an internet connection. This means that businesses can provide their customers with a seamless and consistent user experience across multiple devices, including desktops, laptops, smartphones, and tablets. In addition, web applications are platform-independent, which means they can run on any operating system and browser without any compatibility issues. This makes it easier for businesses to reach a wider audience and cater to the needs of their customers regardless of the device they are using. Learn about similar topics at https://hybridcluster.com/ Cost Savings Web application development can also result in cost savings for businesses. Because web applications are designed to run on a single codebase, developers can avoid the need to build separate apps for different devices and platforms. This not only reduces development costs but also eliminates the need for maintenance and updates on multiple platforms. Furthermore, web applications are easily deployable, which means they can be rolled out to customers much faster than traditional software. This can lead to quicker time-to-market and faster return on investment, resulting in cost savings for businesses. To learn more about Web Applications click here. Improved Security Web applications are more secure than traditional desktop-based applications. Web application development includes advanced security features that can protect against a variety of threats, including viruses, malware, and hacking attempts. Web applications are also easier to update and patch, which means developers can quickly fix security issues as they arise. Security measures can be added to web applications at every stage of development, from design to deployment, ensuring maximum protection for businesses and their customers. Better Analytics Web applications can provide valuable data and insights about customer behavior and preferences. This data can be used to optimize marketing campaigns, improve customer retention, and increase sales. Web applications also allow for real-time analytics, meaning businesses can monitor the performance of their applications in real-time and make data-driven decisions to improve the user experience. By leveraging data analytics, businesses can gain a competitive advantage in their industry and stay ahead of the competition. Conclusion: In conclusion, web application development is a powerful tool for businesses looking to stay ahead in today’s digital landscape. The benefits of web application development include greater scalability, easy access from any device, cost savings, improved security, and better analytics. By investing in web application development, businesses can accelerate their growth, reach a wider audience, and provide a seamless and consistent user experience to their customers. So why wait? Start your web application development journey today and reap the rewards of this transformative technology.
                        
                

                    
                            
         

                        
                    
                            
                                The Path to Successful App Development
                            
                            
    
        
            by Zaheer
            in App Development
            on December 2, 2023
        
    
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                            In this day and age, almost everyone has a smartphone or some form of mobile device. It has become an integral part of our daily lives that we cannot imagine living without. From socializing to shopping, from learning to entertainment, it’s all in the palm of our hands. This is the reason why businesses are taking advantage of this opportunity and are investing in developing mobile applications to cater to their customers’ needs. However, developing an app is not an easy task. It involves a lot of planning, strategizing, programming, and testing. In this blog, we will discuss the path to successful app development and the best practices to take. Identifying the Needs of the Target Audience – The first step in app development is to identify the needs of the target audience. Who are your users? What problems are they trying to solve? What features would they want in an app? It’s important to keep in mind that your app should provide value to your users and make their lives easier. Conduct market research and surveys to understand what your audience wants. This information will be the foundation of your app development plan. To Learn how to Target an Audience click here. UX and UI Design – The user experience (UX) and user interface (UI) design of an app is crucial. It’s what makes your app visually appealing and user-friendly. The user should be able to navigate through the app with ease. An app with a poor UX/UI design will not attract users or retain them. Invest in a good UX/UI designer and ensure that your app’s design is consistent across all platforms. Learn more about this topic at https://hybridcluster.com/ Agile Methodology – The Agile development methodology has become popular in software development because of its flexibility and efficiency. It is a process where the app development team works in iterations or sprints. In each sprint, a specific set of features is developed and tested. The feedback from users and testing is then used to improve the next sprint. This process ensures that the app development team can quickly address bugs, changes, and new requirements while still delivering the app on time. Testing and Quality Assurance – Testing and Quality Assurance (QA) are essential in app development. Testing ensures that the app runs smoothly and that there are no bugs or glitches. QA ensures that the app meets the user’s needs and the business’s objectives. The testing process should be done by a team of testers who have experience in app development. It’s essential to test the app on various devices, platforms, and under different scenarios to ensure it works correctly. App Launch and Marketing – The launch and marketing of your app are just as crucial as development. It’s important to have a launch strategy in place that includes pre-launch marketing, social media campaigns, and app store optimization. Ensure that your app is listed on all relevant app stores and that there is a plan in place to gather feedback from users. The feedback will provide invaluable information that can be used to further improve the app. Conclusion: Developing a mobile app is not an easy task, but it’s a worth-while investment that can provide significant returns. By identifying the needs of your target audience, investing in UX/UI, using Agile methodology, testing and quality assurance, and having a launch strategy in place, you can ensure that your app development is a success. Remember to always listen to and engage with your users, as their feedback is what will drive further innovation and keep your app competitive. Use these best practices to create an app that will make a difference in your user’s lives and in the success of your business.
                        
                

                    
                            
         

                        
                    
                            
                                The Benefits of React Native App Development
                            
                            
    
        
            by Zaheer
            in React Native
            on November 19, 2023
        
    
    0
    

                            React Native is a popular open-source framework that developers use to build high-performance mobile applications for both iOS and Android platforms. Its popularity has skyrocketed in recent years because it allows developers to build cross-platform mobile apps using just one codebase. In this blog post, we’ll take a closer look at the benefits of React Native app development and why you should consider it as a development option for your next mobile app project. Faster Development Time: One of the biggest benefits of React Native is its ability to reduce development time. With React Native, developers can write code once and deploy it simultaneously to both iOS and Android devices, making the development process much faster than building separate apps from scratch. This is because React Native uses a single codebase, which is quicker to develop than developing two separate native apps. Reusable Components: React Native’s component-based architecture helps create reusable components that can be used across multiple projects. Developing and packaging a component requires less effort than creating a whole module. As components can be reused, it eliminates repetition, enhances efficiency, and shortens development time. Improved Performance: React Native apps are compiled right down to native code, which makes them look and feel like a native app; hence, it delivers high performance and superior user experience. This translates to faster app load times, smoother transitions, and quicker response times. Additionally, React Native enables using native modules and components, thus allowing developers to integrate native code in their app to improve overall performance. learn more about this topic at https://digital.gov/resources/guide-create-mobile-friendly-websites/ Cross-Platform App Development: React Native is a cross-platform development framework, meaning developers can write code once that can be run on both iOS and Android devices. This saves time for businesses as they can avoid the need to build separate Android and iOS apps, reducing their app development costs and time-to-market. Large Community Support: React Native’s popularity has led to a large and active community of developers that provide support, guidance, and resources to help developers create high-quality mobile applications. The React Native community is supportive and informative, and they share their expertise through social media groups, conferences, and online discussions. This means that developers can receive help in addressing technical issues and stay up-to-date with the latest trends. To learn more about React Native click here. Conclusion: React Native is a great development option if you’re looking to create a mobile app that can be used on both iOS and Android devices without sacrificing performance or user experience. By leveraging React Native’s reusable components, cross-platform development, and large community support, developers can create applications faster while reducing app development costs. Additionally, by using native code in React Native apps, businesses can ensure that their apps are running on a stable and reliable platform while developers can spend more time focusing on developing new features and improving the user experience.
                        
                

                    
                            
         

                        
                    
                            
                                The Future of Chatbots and AI Art
                            
                            
    
        
            by Zaheer
            in Programming
            on September 17, 2023
        
    
    0
    

                            Generative Artificial Intelligence (AI) has come a long way in the past few years, and it’s now possible to create sophisticated chatbot systems that can understand human language, as well as generate images and other forms of art. Generative AI technologies such as ChatGPT or Bard are examples of how far generative AI has advanced. With ChatGPT, developers can create conversational chatbots that understand spoken English and can even generate their own natural language responses. The potential applications of generative AI are far-reaching, from virtual assistants to autonomous robots. But one of the most exciting possibilities is the use of generative AI for creating artistic renderings such as images or music. In this tutorial, we’ll explore how to use generative AI to create art. We’ll look at two types of generative models — GPT-3 and diffusion models — and discuss how they can be used together to create beautiful, unique pieces of art. if you are looking for latest app development tools for your next project read this link first https://hybridcluster.com/the-unmatched-potential-of-react-native-app-development/ We’ll also discuss some of the practical applications of generative AI in the world of art. We’ll explore how generative AI can be used to create stunning works of art that are not only visually appealing but also technically complex and rich in meaning. Finally, we’ll examine some of the ethical considerations surrounding the use of generative AI for creating art, including potential copyright issues and questions about who “owns” the artwork created by generative AI models. By the end of this tutorial, you’ll have a better understanding of how to use generative AI for creating art and its potential implications. Generative AI for Art Generation Generative Artificial Intelligence is a set of algorithms that can be used to generate novel data from existing data sets. The most common uses for generative AI include image synthesis, natural language generation, and music synthesis. Generative models can be trained on existing data, such as images or audio clips, to generate novel data of the same type. In the context of art creation, generative models can be used to create unique works of art from existing ones. The two most commonly used types of generative models in art generation are GPT-3 and diffusion models. GPT-3 GPT-3 (Generative Pre-trained Transformer) is an advanced natural language processing model that can generate human-like language from a given context. By training the GPT-3 model on existing works of art, it’s possible to generate new pieces of artwork with similar characteristics. Diffusion models Diffusion models, on the other hand, take existing images and “diffuse” them by adding elements from other sources. For example, a diffusion model might take an existing painting and add elements from photographs or other works of art to create a new piece of artwork. This technique is often used to create visually striking images that combine elements from multiple sources. Generative AI Tutorial: Creating Artistic Renderings with GPT and Diffusion Models In this tutorial, we’ll explore how to create artistic renderings using generative AI models. We’ll start by training a GPT-3 model on existing works of art to generate new pieces of artwork that are similar but unique. We’ll then explore how to use diffusion models to combine elements from multiple sources and create visually striking images. Practical Applications and Ethical Considerations for Generative AI Art Once you’ve created your own generative AI art, there are a few practical considerations to keep in mind. One of the most important is copyright law, which applies to works of art generated by AI just as it does to human-created works. It’s important to be mindful of copyright law when creating generative AI art and to understand the implications before releasing any artwork into the public domain. Finally, there are also ethical considerations surrounding the use of generative AI for creating art. Who “owns” the art generated by a generative AI model? Does the creator of the artwork own it, or can anyone use it as they please? These are important questions to consider when creating generative AI-generated artwork. By exploring these topics and understanding how to create artistic renderings with GPT-3 and diffusion models, you’ll be well-prepared to use generative AI for creating art. So get started now and create your own unique works of art! Market Growth and Adoption As generative AI technology continues to grow in popularity, the market for products utilizing AI art is expected to continue to expand. This growth is driven by the fact that generative AI can create artwork faster and more cost-effectively than traditional methods, making it a desirable option for businesses looking to create unique visual content. Chatbot Market Growth through 2024 The market for AI chatbots is expected to grow significantly in the coming years, as more businesses recognize their potential and adopt them into their customer service operations. According to a report by Allied Market Research, the global chatbot market size was estimated at $3.7 billion in 2018 and is projected to reach $13.2 billion by 2024, growing at a compound annual growth rate of 25.2%. This growth is fueled by the increasing use and adoption of chatbots in customer service, marketing, sales, and other applications. What is ChatGPT? ChatGPT is a chatbot platform that combines GPT-3 and diffusion models to create unique works of art. ChatGPT allows users to generate artwork quickly and easily, without the need for manual input. With its intuitive interface, users can create stunning pieces of generative AI art in minutes, perfect for use in marketing campaigns or as custom artwork for a client. What is Bard? Bard is a generative AI platform that uses GPT-3 and diffusion models to create realistic artwork. Unlike other platforms, Bard allows users to customize their artwork by choosing specific color palettes and textures. Additionally, Bard offers an intuitive online editor for fine-tuning the generated artwork and adding unique details for a truly custom look. This makes Bard perfect for anyone looking to generate stunning artwork with minimal time and effort. Differences between…  Read more
                        
                

                    
                            
         

                        
                    
                            
                                The Unmatched Potential of React Native App Development
                            
                            
    
        
            by Zaheer
            in React Native
            on July 30, 2023
        
    
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                            Blog Introduction: In today’s technologically advanced world, businesses are continually struggling to engage their customers and develop brand loyalty. They do this through mobile applications that offer seamless user experiences, high-speed loading times, and responsive UIs. However, developing such applications can be a daunting task as it requires cross-device compatibility, platform-specific customizations, and efficient performance. React Native App Development Services come to the rescue by offering a solution that combines cross-platform compatibility, Native API integrations, and performance efficiencies. What is React Native App Development? React Native is a hybrid application development framework developed by Facebook that allows developers to create cross-platform applications for both Android and iOS platforms. Similar to React.js, React Native uses the same components, principles, and syntax. React Native’s remarkable feature is how it bridges the gap between Native app development and Web app development. It utilizes Native API integrations within a JavaScript codebase, reducing the need for separate Native development teams and optimizing engineering timelines. To learn more about Cross platform Development click here. What are the Benefits of React Native App Development? React Native offers numerous benefits, making it the preferred choice for businesses that want cross-device mobile applications. Firstly, React Native’s Shared Codebase gives developers the flexibility of developing apps that run on both iOS and Android platforms. Secondly, React Native offers Native API Integrations that optimize the app’s performance, making it efficient in handling high-volume traffic and complex operations. Thirdly, React Native’s UI Component Library offers pre-built components that developers can use to design beautiful and responsive UIs. Finally, the framework’s Hot Reload functionality speeds up the development process since it allows changes to be reflected instantly. You can learn more about React Native at https://hybridcluster.com/ Why Should You Invest in React Native App Development Services? Businesses invest in React Native App Development Services for many reasons. Firstly, React Native offers Cost Reductions since developers can create cross-platform applications using a shared codebase. Secondly, the framework offers Faster Time-To-Market since developers can reuse pre-existing code, leading to faster development and deployment times. Thirdly, React Native offers Improved User Experiences since it integrates Native UI components that enhance app performance and responsiveness. What Makes a Successful React Native Development Project? To ensure a successful React Native Development project, businesses need to consider several aspects. Firstly, Project Planning and Management play an important role in defining the project’s scope, timelines, and deliverables. Secondly, the team must have a Firm Understanding of React Native’s Component Library and API integrations to design responsive and efficient UIs. Thirdly, Quality Assurance and Testing must be done regularly to ensure the app’s performance and responsiveness to high-volume traffic. Finally, Post-Deployment Maintenance and Support are crucial for monitoring app performance, fixing bugs, and updating the app’s functionality. Conclusion: In conclusion, React Native App Development is the future of Mobile Application Development. Its cross-platform compatibility, Native API Integrations, and Shared Codebase offer numerous benefits, making it the preferred choice for developing mobile applications. React Native Development Projects must be planned, designed, developed, tested, and maintained with utmost expertise and care. Businesses must choose a reliable React Native App Development Services provider to ensure scalability, responsiveness, and high-performance applications with seamless user experiences.
                        
                

                    
                            
         

                        
                    
                            
                                Hire React Native Developers
                            
                            
    
        
            by Zaheer
            in React Native
            on July 30, 2023
        
    
    0
    

                            React Native is an open-source mobile application development framework that is based on the React JavaScript library used for building user interfaces for web applications. It is widely used because of its cross-platform capabilities, easy to use modules, and faster development time. If you are looking for an excellent mobile application developer, then you should definitely consider hiring a React Native developer. In this blog, we will discuss the benefits of hiring a React Native developer, what to look for when hiring a React Native developer, and where to find them. Benefits of hiring a React Native developer: There are several benefits to hiring a React Native developer for your mobile application development needs. Firstly, it is a cross-platform framework, so the developer can write code once and use it on multiple platforms. Secondly, the development time is significantly reduced as developers can reuse code and modules. This leads to faster delivery times, saving you both time and money. Moreover, the React Native framework allows for easy maintenance and updates, ensuring that your application runs seamlessly over time. What to look for when hiring a React Native developer: When hiring a React Native developer, it’s essential to know what skills and experience to look for to find the best candidate for your project. Firstly, they should have experience in React and JavaScript. Secondly, they should have a strong understanding of the React Native framework, including its components and modules. Additionally, experience working with cross-platform development tools such as Expo can be beneficial. Soft skills should also be considered, including communication skills, problem-solving skills, and the ability to work well with a team. Where to find React Native developers: There are several places where you can find React Native developers to hire. Firstly, online job boards such as LinkedIn, Glassdoor, and Indeed are great places to start. You can also consider hiring developers from freelance websites such as Upwork and Fiverr. If you want to ensure that you are hiring a reputable and quality developer, then you can use professional development sourcing platforms, such as Topcoder and Toptal. Learn more about React Native Developers at https://www.applytosupply.digitalmarketplace.service.gov.uk/g-cloud/services/283018296728947 How to select the right React Native developer: When choosing a React Native developer, it’s essential to take a deliberate approach. Firstly, review their portfolio and previous work experience to get an idea of their skill set and the type of projects they have worked on. Secondly, conduct a phone or video interview to assess their communication skills and determine their ability to work on your project. Lastly, ask for references and speak to former clients to gauge their satisfaction with the developer’s work. Conclusion: In conclusion, hiring a React Native developer can benefit your mobile application development project in several ways. The cross-platform capabilities, faster development time, and easy maintenance make it a go-to choice for many developers and businesses. When hiring, it’s crucial to consider skills, experience, and soft skills, and take a deliberate approach when selecting the right developer for your project. By following these guidelines and knowing where to find React Native developers, you can ensure that you hire the best candidate for your project, ultimately leading to a successful and cost-effective outcome. If you want to learn more about this topic click here.
                        
                

                    
                            
         

                        
                    
                            
                                Complexity of FreeBSD VFS using ZFS
                            
                            
    
        
            by Zaheer
            in OpenZFS
            on May 22, 2023
        
    
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                            I spend a lot of time hacking on the ZFS port to FreeBSD and fixing various bugs. Quite often the bugs are specific to the port and not to the OpenZFS core. A good share of those bugs are caused by differences between VFS models in Solaris and its descendants like illumos, and FreeBSD. I would like to talk about those differences. But first a few words about VFS in general. VFS stands for “virtual file system”. It is an interface that all concrete filesystem drivers must implement so that higher level code could be agnostic of any implementation details. More strictly, VFS is a contract between an operating system and a filesystem driver. In a wider sense VFS also includes the higher level filesystem-independent code that provides the more high level and convenient interfaces to the web development firm. For example, a filesystem must implement an interface for looking up an entry by name in a directory. VFS provides a more convenient interface that allows to perform a lookup using an absolute or a relative path given a starting directory. Additionally, VFS in a wider sense includes utility code that could be shared between different filesystem drivers. Common VFS models for UNIX and UNIX-like operating systems have some common requirements on a structure of a filesystem. First, it is assumed that there are special filesystem objects called directories that provide mapping from names to other filesystem objects that are called directory entries. All other filesystem objects contain data or provide other utilities. The directories form a directed rooted tree starting with a specially designated root directory. In other words, it’s a connected rooted directed acyclic graph where each edge has a name associated with it. Non-directory objects may be reachable by multiple paths. Alternatively, a non-directory object can be a directory entry in more than one directory or it can appear as multiple entries with different names in a single directory. Conventionally those multiple paths to a single object are referred to as hard links. Additionally, there is a designated object type called a symbolic link that can contain a relative or an absolute path. When traversing such a symbolic link object a filesystem consumer may jump to the contained path called a symbolic link destination. It is not required to so, however. The symbolic links allow to create appearence of arbitrary topologies including loops or broken paths that lead nowhere. A directory must always contain two special entries: Each filesystem object is customarily referred to as an inode, especially in the context of a filesystem driver implementation. VFS requires that each filesystem object must have a unique integer identifier referred to as an inode number. At the VFS API layer the inodes are represented as vnodes where ‘v’ stands for virtual. In object oriented terms the vnodes can be thought of as interfaces or abstract base classes for the inodes of the concrete filesystems. The vnode interface has abstract methods known as vnode operations or VOPs that dispatch calls to concrete implementations. Typically an OS kernel is implemented in C, so object oriented facilities have to be emulated. In particular, a one-to-one relation between a vnode and an inode is established via pointers rather than by using an is-a relationship. For example, here is how a method for creating a new directory looks in FreeBSD VFS: int VOP_MKDIR( struct vnode *dvp, struct vnode **vpp, struct componentname *cnp, struct vattr *vap); dvp (“directory vnode pointer”) is a vnode that represents an existing directory; the method would be dispatched to an implementation associated with this vnode. If the call is successful, then vpp (“vnode pointer to pointer”) would point to a vnode representing a newly created directory. cnp defines a name for the new directory and vap various attributes of it. The same method in Solaris VFS has a few additional parameters, but otherwise it is equivalent to the FreeBSD VFS one. It would be wasteful or even plain impossible to have vnode objects in memory for every filesystem object that could potentially be accessed, so vnodes are created upon access and destroyed when they are no longer needed. Given that C does not provide any sort of smart pointers the vnode life cycle must be maintained explicitly. Since in modern operating systems multiple threads may concurrently access a filesystem, and potentially the same vnodes, the lifecycle must be controlled by a reference count. All VFS calls that produce a vnode such as lookups or new object creation return the vnode referenced. Once a caller is done using the vnode it must explicitly drop a reference. When the reference count goes to zero the concrete filesystem is notified about that and should take an appropriate action. In Solaris VFS model the concrete filesystem must free both its implementation specific object and the vnode. In FreeBSD VFS the filesystem must handle its private implementation object, but the vnode is handled by the VFS code. In practice an application may perform multiple accesses to a file without having any persistent handle open for it. For example, the application may call access(2), stat(2), etc system calls. Also, for example, lookups by different applications may frequently traverse the same directories. As a result, it would be inefficient to destroy a vnode and its associated inode as soon as its use count reaches zero. All VFS implementations cache vnodes to avoid the expense of their frequent destruction and construction. Also, VFS implementations tend to cache path to vnode relationships to avoid the expense of looking up a directory entry via a call to a filesystem driver, VOP_LOOKUP. Obviously, there can be different strategies for maintaining the caches. For example, a life time of a cache entry could be limited; or total size of the cache could be limited and any excess entries could be purged in a least recently used fashion or in a least frequently used fashion. And so on. Solaris VFS combines the name cache and the vnode cache. The name cache maintains an extra reference on a…  Read more
                        
                

                    
                            
         

                        
                    
                            
                                Logging as Storytelling #3: Types
                            
                            
    
        
            by Zaheer
            in Programming
            on May 11, 2023
        
    
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                            In my next blog post I will talk about complexity of freeBSD VFS using ZFS. Specifically, structured as a series of causally-related actions. The next step is making sure log messages are consistent: objects that are used in different log messages should be referred to consistently, messages should be organized in a consistent manner to ease searching, etc.. The way the Eliot logging library does this is by providing a type system for messages, built out of “fields” that know how to serialize arbitrary Python objects. For example, let’s declare a logging action that describes a state machine transition. The start of the action will include the identity of the state machine, its current state, and the input. The end of the action, if successful, will include the new state and some outputs. from eliot import Field, ActionType # A Field that knows how to serialize an object to a loggable format: FSM_IDENTIFIER = Field(u”fsm_identifier”, lambda fsm: fsm.identifier(), u”An unique identifier for the FSM to which the event pertains.”) # Some fields that merely expect to receive inputs of specified types: FSM_STATE = Field.forTypes( u”fsm_state”, [unicode], u”The state of the FSM prior to the transition.”) FSM_INPUT = Field.forTypes( u”fsm_input”, [unicode], u”The string representation of the input symbol delivered to the FSM.”) FSM_NEXT_STATE = Field.forTypes( u”fsm_next_state”, [unicode], u”The string representation of the state of the FSM after the transition.”) FSM_OUTPUT = Field.forTypes( u”fsm_output”, [list], # of unicode u”A list of the string representations of the outputs produced by the ” u”transition.”) # The definition of an action: LOG_FSM_TRANSITION = ActionType( # The name of the action: u”fsm:transition”, # Fields included in the start message of the action: [FSM_IDENTIFIER, FSM_STATE, FSM_INPUT], # Fields included in the successful end message of the action: [FSM_NEXT_STATE, FSM_OUTPUT], # Fields (beyond built-in exception and reason) included in the failure end # message of the action: [], # Description of the action: u”A finite state machine received an input made a transition.”) We can now use this to log actions in our state machine implementation: from eliot import Logger class FiniteStateMachine(object): logger = Logger() def __init__(self, name, state, transitions, handler): self.name = name self.state = state self.transitions = transitions self.handler = handler def identifier(self): return self.name def input(self, what): with LOG_FSM_TRANSITION(self.logger, fsm_identifier=self, fsm_state=self.state, fsm_input=what) as action: # Look up the state machine transition: outputs, next_state = self.transitions[self.state][what] # Tell the action what fields to put in the success message: action.addSuccessBindings(fsm_next_state=next_state, fsm_output=outputs) # Handler’s logging will be in the context of the # LOG_FSM_TRANSITION action: for output in outputs: self.handler(output) self.state = next_state What benefits do we get from having an explicit type and fields? In my next post I’ll talk about unit testing, ensuring your logging code is written correctly and actually being run. Meanwhile why not read more about HybridCluster’s technology underlying our cloud platform for web hosting, the reason this logging system is being written.
                        
                

                    
                            
         

                        
                    
                            
                                Containers and distributed storage are the future
                            
                            
    
        
            by Zaheer
            in Cloud Hosting
            on April 24, 2023
        
    
    0
    

                            Now free with HybridCluster non-commercial licenses We are pleased to announce that we are now offering free licenses for HybridCluster, our full stack cloud hosting software platform, to any business or organisation to use for non-commercial purposes. Our cloud software is already being used to successfully host some communities, open source projects and other non-commercial organisations including the OpenZFS project, which launched last September. On the day after the launch, Matt Ahrens, co-founder of ZFS, announced: “We had over 20,000 unique visitors to the website yesterday, with a peak of over 500 concurrent visitors.” We especially hope that our free licenses will benefit open source projects, and raise the awareness of the efficiency and performance benefits of using containers for virtualization, and distributed storage for redundancy. To quote our CEO, Luke Marsden, “At HybridCluster we firmly believe that containers are the future of cloud. For decades, full hardware virtualization has been necessary because of the limitations of multi-tenancy within operating systems, but now that is finally fixed, we’ll see the benefits of containers ramp up in the next few years: increased densities, bare metal performance, and consistency of deployment. These benefits will start to challenge the virtualization market, which continues to struggle with the complexities and challenges associated with virtual machines, particularly storage. We at HybridCluster have been innovating in the container space for over 5 years.” Our HybridCluster software platform automatically provides high availability (HA) and disaster recovery (DR) across data centres to web applications developed for Linux, Apache, MySQL and PHP (LAMP), intelligently managing resources with auto scaling across distributed storage. Our data vault component, which continuously snapshots file changes, provides the ability to rollback websites, databases and mailboxes, protecting against user and system error.HybridCluster is designed to work on commodity hardware, so with free licenses, not-for-profit organisations can deploy an affordable private or public cloud that requires minimal support as it’s fully automated. We will be supporting these licenses through our community forum, upgradable to our 24/7 Enterprise support. To get started, businesses and organisations can sign up at www.hybridcluster.com/get-started/ and select from the dropdown menu that they are interested in our free non-commercial license.
                        
                

                    
                            
         

                        
                    
                            
                                Self-healing cloud technology receives $1 million investment
                            
                            
    
        
            by Zaheer
            in Press Releases
            on April 13, 2023
        
    
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                            Breakthrough technology helps cloud and hosting service providers automatically cope with failures and spikes in traffic BRISTOL, UK (1st May 2013) – HybridCluster, an early stage software solution provider to the cloud and hosting industry, today announces completion of a $1m fundraising and immediate availability of version 2.0 of its integrated suite of storage, replication and web clustering software. Amongst the investors are established industry figures including Jason Seats (former VP of Engineering of Rackspace Cloud), Charles Grimsdale (partner at Eden Ventures and former CEO & founder of OD2), Anil Hansjee (former Head of Corporate Development, Google EMEA) and Toivo Annus (former Head of Engineering at Skype). Luke Marsden, CEO and founder at HybridCluster, said: For too long web hosting companies have lived in fear of unforeseen failures, spikes in traffic or user error striking their operations, stopping their business in it tracks. With this investment in the company we are now able to launch Hybrid Cluster 2.0 and compete effectively in the hosting market across Europe and North America. Liam Eagle, Analyst, Internet Infrastructure Services at the analyst firm, 451 Research, pointed out: HybridCluster 2.0 provides service providers the ability to create cost effective, high availability hosting and email infrastructure. It provides: Jason Seats, former Rackspace Cloud VP Engineering and MD of TechStars Cloud, stated: HybridCluster is a rare combination of a disruptive and game-changing technology from a company run by an inspiring and highly motivated team in a market that has undeniable need for, and clear benefits, from the technology BrickStreet Data Systems, a provider of high availability SaaS and website hosting to businesses in North America, has been a HybridCluster customer since February 2013 We wanted to grow our hosting business but our old platform was vulnerable to systems failures, traffic spikes and end users deleting their own files. It was also exceedingly difficult to do even routine maintenance on each server,” explained, Andrew Skattebo, CEO of BrickStreet Data Systems. That’s why after months of research and testing and finding other solutions either too complex or too expensive, we chose and deployed HybridCluster.” Skattebo added: “Today we can offer a more cost-effective, high-availability hosting platform that is easier to maintain and takes away many of the risks that normally affect a business like ours. Today web hosting providers across Europe and the Americas are using HybridCluster – the majority of whom are now live on version 2.0. HybridCluster is available immediately to cloud and web hosting service providers. Users can visit www.HybridCluster.com to sign up for a trial. Visitors to HostingCon in Austin, Texas, from June 17 to 19, can see HybridCluster in action on the exhibit floor at exhibit #723 as well as see HybridCluster’s CEO, Luke Marsden, first up on the Tech Track on the conference agenda. – release ends – About Hybrid Cluster (@HybridCluster)HybridCluster has triggered a rethink about cloud and hosting industry’s dependency on high cost, legacy virtualisation and storage stacks that fail to fully protect both businesses and end users. Computer scientists and industry experts have combined at HybridCluster to deliver breakthrough storage and hosting platform technology that automatically detects and recovers data centre outages in less than one minute, delivers 4x better density of customers per server, and offers end user to self-recover lost files and data. Founded in 2008 and based in Bristol, UK with offices in Europe and America, HybridCluster’s backers and advisors are widely recognised and respected industry veterans, and its customers amongst the most innovative hosting providers across Europe and the Americas. HybridCluster is a SETsquared company. Notes to editors Tags: cloud infrastructure, PaaS, web hosting, data centres, software, hosting platform. Resources: Investors and backers of HybridCluster HybridCluster has attracted an elite group of VCs and angel investors — including experts in the Cloud Infrastructure space – who recognised the game-changing potential of HybridCluster and have invested US $1m in the early stage company to accelerate customer adoption. Investors include: More to read: Eliot logging library is now open source!
                        
                
                    