Category: Software development

What is System Availability? Availability Calculation Fiix

For instance, if you are coming from an IT background, you should be aware of active-active database systems. In these kinds of systems, when you update a record in one database, immediately another database is synced to match the updated database. Thus, even if there will be corruption or an outage in one of the databases, the other database will be operating until the problem on the faulty database is fixed. And since there is still an operating database, there won’t be an outage from database service side as well.

Typical cloud services provide a set of networked computers running a standard server OS like Linux. Computers can often communicate with other instances within the same data center for free and to outside computers for fee. The cloud infrastructure may provide simple fault detection and restart at the virtual machine level.

BMC supports availability management

IT disaster recovery refers to the policies, tools, and procedures IT organizations must adopt to bring critical IT components and services back online following a catastrophe. An example of an IT disaster is the destruction of a data center due to a natural event like a major earthquake. Transient and intermittent faults can typically be handled by detection and correction by e.g., ECC codes or instruction replay . Permanent faults will lead to uncorrectable errors which can be handled by replacement by duplicate hardware, e.g., processor sparing, or by the passing of the uncorrectable error to high level recovery mechanisms.

  • The timely, reliable access to data and information services for authorized users.
  • Application availability is the extent to which an application is operational, functional and usable for completing or fulfilling a user’s or business’s requirements.
  • The nines are used to calculate the percentage of network availability guaranteed in a service-level agreement or other contract.
  • Serviceability includes various methods of easily diagnosing the system when problems arise.
  • Another common configuration is N+1 , which reduces total system cost by having fewer standby subsystems.
  • There are many ways to improve availability and reliability, in particular.

Data centers use uptime tiers to ensure the right levels of availability are tied to specific components, systems and software. Service-level agreements and other contracts often use the nines to describe guaranteed levels of reliability and availability. For instance, five 9s means a reliability level of 99.999% is being promised. The system or component in question will be available 99.999% of the time.

Availability manager tasks and responsibilities

And after the fix on the faulty database, synchronization will take place to take all updates from the operating database. As you can guess, in this case, two databases are running at the same time to ensure resilience. Producing and maintaining an appropriate availability plan is the major objective of the Availability Management process. In order to provide the required availability levels, an IT service provider must have created plans. These kinds of steps, actions or plans are all documented in the availability management plan of an IT Service provider.


When building your system, consider availability concerns during all aspects of your system design and construction. It’s easy to see which type of downtime is causing an issue with availability. The probability that an item will operate satisfactorily at a given point in time when used under stated conditions in an ideal support environment.

Use availability as an input into your continuous improvement process

The following table shows the downtime that will be allowed for a particular percentage of availability, presuming that the system is required to operate continuously. Service level agreements often refer to monthly downtime or availability in order to calculate service credits to match monthly billing cycles. The following table shows the translation from a given availability percentage to the corresponding amount of time a system would be unavailable.


Active redundancy is used in complex systems to achieve high availability with no performance decline. Multiple items of the same kind are incorporated into a design that includes a method to detect failure and automatically reconfigure the system to bypass failed items using a voting scheme. Internet routing is derived from early work by Birman and Joseph in this area. Active redundancy may introduce more complex failure modes into a system, such as continuous system reconfiguration due to faulty voting logic.

Assessment of the impacts of all changes on the Availability Plan

The Service Availability Management process is key in assuring that customers will receive a seamless service. In Availability Management, availability is usually calculated as a percentage and this calculation is often based on the agreed service time and downtime. So, let’s assume that the agreed service time is 100 minutes for a service.


System and software availability are measured by several different metrics. The simplest configuration (or “redundancy model”) is 1 active, 1 standby, or 1+1. Another common configuration is N+1 , which reduces total system cost by having fewer standby subsystems. Some systems use an all-active model, which has the advantage that “standby” subsystems are being constantly validated. His company also provides Marketing, content strategy, and content production services for B2B IT industry companies.

Hardware features

Organizations depend on different functionality and features of the IT service to perform business operations. As a result, they need to measure how well the service fulfils the necessary business performance needs. Low-priority workloads may run reasonably well at low SLA performance in terms of service availability. Moving up in the system stack, it is important to implement a reliable redundant solution for your application entry point, normally the load balancer. For the load balancer case, however, there’s an additional complication, due to the way nameservers work. Recovering from a load balancer failure typically means a failover to a redundant load balancer, which implies that a DNS change must be made in order to point a domain name to the redundant load balancer’s IP address.


In computing, the term availability is used to describe the period of time when a service is available, as well as the time required by a system to respond to a request made by a user. High availability is a quality of a system or component that assures a high level of operational performance for a given period of time. If critical IT infrastructure fails, but is supported by high availability architecture, the backup system or component takes over. This allows users and applications to keep working without disruption and access the same data available before the failure occurred. If a server in the cluster fails, another server or node can take over immediately to help ensure the application or service supported by the cluster remains operational. Using high-availability clusters helps ensure there is no single point of failure for critical IT and reduces or eliminates downtime.

Monitor availability

If the controlling system becomes unavailable, the Ground Combat Vehicle or ASW Continuous Trail Unmanned Vessel would be lost. This means adding or building redundancy into the system so that failure of a component does not mean failure of the entire system. System software controls a computer’s internal functioning, chiefly through an operating system, and also controls such peripherals as monitors, printers, and storage devices.

7 Android Programming Languages to Build Your Next Mobile App

Contact us if you would like to consult with our team regarding your mobile development or other digital initiatives. Native mobile applications are written in the platform’s programming language and frameworks and run directly on the operating system of the device such as iOS and Android. Native mobile apps provide best performance and user experience. Part of the planning phase of developing an app includes identifying the skills needed for your app development initiative. For example, iOS and Android mobile platforms use different development technology stacks.

mobile app development

Explore free resources from NativeScript and Flutter to make your mobile apps a reality. As a result, the mobile front-end applications increasingly rely on and integrated with back-end services which provide data to be consumed through the mobile front-end. Such data can include, for example, product information for e-commerce apps or flight info for travel and reservation apps.


Because you’re denied access to the operating system’s native APIs, hybrid mobile application development works best for simple web applications—three- or four-page mobile applications with limited functionality. Mobile application management describes software mobile app development and services responsible for provisioning and controlling access to internally developed and commercially available mobile apps used in business settings. The strategy is meant to off-set the security risk of a Bring Your Own Device work strategy.

  • However, there are also software development platforms available to create white label apps from basic templates and configurations.
  • From the highest level of security with blockchain to reliable automation with AI/ML — use every benefit for your solution.
  • By also ensuring that configurations can be changed rather than be dependent on pre-existing settings, it allows for the flexible development of apps according to enterprise needs.
  • In 2023, these immersive experiences are expected to gain further traction across various industries, such as gaming, education, and retail.
  • The more your app gets used and downloaded, the more familiar your brand/products/services will become among your ideal customers.

We have a history of successful implementations and developed custom solutions in this domain… Multiple websites rebuilt on Drupal in support of corporate rebranding initiative. Drupal website with support for multiple patient and practitioner user personae in support of corporate rebranding initiative.

How Long Does It Take to Learn Android App Programming?

BuildFire Reseller White label the BuildFire platform as your own. At this stage, you need to decide if the app is going to be on iOS, on Android, or both. Also, plan your technology stack to ensure maximum return on investment while keeping an eye on the future.

mobile app development

Workflow App Builder Improve efficiencies, cut costs, and save time with a custom mobile app for business workflows. Your QA testing strategy should align with a number of your goals, including customer expectations, business goals, the user experience, as well as industry best practices. Building a free app might be an amazing idea because the long-term ROI would be incredibly high. That said, you need to plan to stay afloat before the app becomes profitable and it is equally important that you have a strong marketing strategy and budget right from day one.

How to ensure success of your app after launch

A3logics is known as the trusted technology partner for various organizations since 2003. Over the years, we have gained a reputation for providing quality services by delivering time-critical solutions and continuously evolving through innovative delivery methods. Meetup is a great tool for this, and developer meetings can often be found on the platform, as well as platform-specific ones for iOS and Android.

Determine which users will be your primary audience and solve one primary problem they may have. In addition, you need to define specific metrics you need to track. Second, spend half a day brainstorming the actions that users will perform within the app at launch. Through this exercise, your goal is to map out what the user journey is within the app, the primary use-cases and what you want your ideal users to achieve when they interact with your product. It should be noted that a SWOT analysis doesn’t actually offer a true solution to what app exactly you should build. Nonetheless, it helps you find and analyze the overarching problems affecting your mobile strategy or idea.


They’ve built a companion app which users can take advantage off while inside the store. The app shows them past purchase history, provides product recommendations, limited offers only available on the mobile app and a lot more. While there are many elements that make for a pleasant user experience, at the very minimum, your app should be easy and intuitive to use.

mobile app development

These applications are developed with web technologies such as Facebook React. For those of you who want to build apps for other businesses, app building tools like this give you the option to work with multiple templates all on the same platform. Their platform also has interactive tools that will teach you the coding basics for your mobile application. Validate the concept first, then invest in market research before spending a large amount of time and money on building an app.

Focused on delivering cost effective, technically sound and meaningful functionality.

Explore pack offers from Bump, Replit, Kodika and Azure to build, document and deploy your code. Level up by making sure your app looks and functions as it should, and is as accessible as possible, with the help of LambdaTest and LingoHub. offers several choices of plans starting with the Beginners package for one developer which includes 2 apps and 50K Platform API calls per month, priced at around $25 per month.

mobile app development

User input allows for the users to manipulate a system, and device’s output allows the system to indicate the effects of the users’ manipulation. Mobile UI design constraints include limited attention and form factors, such as a mobile device’s screen size for a user’s hand. Mobile UI contexts signal cues from user activity, such as location and scheduling that can be shown from user interactions within a mobile application.

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Free access to 25+ Microsoft Azure cloud services plus $100 in Azure credit. It’s easy to integrate data from multiple sources, not least from Google Sheets and Forms, Excel from Microsoft 365, or even SalesForce. Alternatively, you can import spreadsheets saved on Dropbox or OneDrive, or directly from MySQL or SQL Server. Once you’ve developed your app, there are options to distribute it to the Google Play and Apple App stores.