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healthcarereaders · 2 months
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Discover how rigorous testing and quality assurance ensures the reliability of life-saving medical devices. Safeguarding health through innovation and precision!
Click to read more: https://bit.ly/3YrMY3d
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rsindia123 · 10 months
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ltslean · 1 year
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stefanoscloud · 2 years
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Azure cloud infrastructure and application testing
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Introduction to quality assurance
Quality assurance (QA) is an umbrella term which encompasses all software and infrastructure quality tests that are performed to verify software application and infrastructure functional and non-functional attributes, including performance, scalability, availability and security. Azure cloud infrastructure and application testing is a major part of quality assurance. There are QA frameworks to be used for both software application and cloud infrastructure testing. Whether you perform QA using testing frameworks or you manually perform a baseline of tests, you need to have test scripts available. Each test script describes the steps to be carried out to test a certain aspect of an application or infrastructure system, as well as the result of each test and subsequent action items, if needed. This article provides a baseline reference of the steps to be included in each type of infrastructure or application test script alongside with a testing script template available for download.
Azure cloud infrastructure and application testing types
The following types of infrastructure and application test scripts are available: - Application unit testing. A unit test is a test that exercises individual software components or methods, also known as a "unit of work." Unit tests should only test code within the developer's control. They don't test infrastructure concerns. Infrastructure concerns include interacting with databases, file systems, and network resources. xUnit.net is a free, open source, community-focused unit testing tool for the .NET Framework. - Application integration testing. An integration test differs from a unit test in that it exercises two or more software components' ability to function together, also known as their "integration." These tests operate on a broader spectrum of the system under test, whereas unit tests focus on individual components. Often, integration tests do include infrastructure concerns. - Application load (or stress) testing. A load test aims to determine whether or not a system can handle a specified load. For example, the number of concurrent users using an application and the app's ability to handle interactions responsively. Refer to my KB article on Azure App Service load testing (using JUnit) for an example of carrying out load testing for an Azure-based Web application. - Infrastructure functional testing. This aims to test all operating systems, firmware and the functional attributes of on-prem or cloud infrastructure components involved in a solution. - Performance and scalability testing. During performance and scalability testing, you measure the performance metrics of your infrastructure as your application workload increases. This is combined with application software stress/load testing. The performance and scale tests involve setting up and testing autoscale policies for scaling horizontally or vertically when the application load requires it. - Availability testing. Availability tests mainly focus on testing the resiliency of your infrastructure in the event of hardware or software components failures and the associated potential downtime incurred during these failures. This should test your infrastructure and application code high availability, redundancy and resiliency. Resiliency can come in many forms, including load balancing, failover clustering (active-active or active-passive) and always on availability groups, virtual machine availability sets as well as cloud infrastructure fault domains, update domains, cloud zone and cloud region redundancy. The availability tests focus on creating deliberate failure simulation events, such as for example having an Azure VNET or subnet or storage account going down, to check the impact on the overall architecture. - Security testing. Security testing aims to test the attack surface of your architecture, the resiliency against malicious attacks, including ransomware, malware and hacking attempts and to discover potential vulnerabilities and security weaknesses in your security configuration by employing techniques such as penetration testing to evaluate IDS/IPS, Web Application Firewall protection, SIEM/SOAR/XDR systems. Azure Advisor, Azure Security Center, Azure Advisor, Microsoft Defender for Cloud and Azure Sentinel are all good tools to employ for security testing.
Site Reliability Engineering (SRE)
The success of your cloud solution depends on its reliability. Reliability can be broadly defined as the probability that the system functions as expected, under the specified environmental conditions, within a specified time. Site reliability engineering (SRE) is a set of principles and practices for creating scalable and highly reliable software systems. Increasingly, SRE is used during the design of digital services to ensure greater reliability. The degree of reliability that's required for a solution depends on the business context. Reliability is defined and measured using service level objectives (SLOs) that define the target level of reliability for a service. Achieving the target level assures that consumers are satisfied. The SLO goals can evolve or change depending on the demands of the business. Another important term to note is service level indicator (SLI), which is the metric that's used to calculate the SLO. SLIs are based on insights that are derived from data that's captured as the customer consumes the service. SLIs are always measured from a customer's point of view. SLOs and SLIs always go hand in hand, and are usually defined in an iterative manner. SLOs are driven by key business objectives, whereas SLIs are driven by what's possible to be measured while implementing the service. The relationship between the monitored metric, the SLI, and the SLO is depicted below:
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Refer to the Reliability and Performance Efficiency pillars of Azure Well Architected Framework for guidance on building scalable and reliable applications.
Chaos Engineering and Azure Chaos Studio
Chaos engineering is a methodology that helps developers attain consistent reliability by hardening services against failures in production. Another way to think about chaos engineering is that it's about embracing the inherent chaos in complex systems and, through experimentation, growing confidence in your solution's ability to handle it. A common way to introduce chaos is to deliberately inject faults that cause system components to fail. The goal is to observe, monitor, respond to, and improve your system's reliability under adverse circumstances. For example, taking dependencies offline (stopping API apps, shutting down VMs, etc.), restricting access (enabling firewall rules, changing connection strings, etc.), or forcing failover (database level, Azure Front Door, etc.), is a good way to validate that the application is able to handle faults gracefully. Azure Chaos Studio is a managed service that uses chaos engineering to help you measure, understand, and improve your cloud application and service resilience. Chaos engineering is a methodology by which you inject real-world faults into your application to run controlled fault injection experiments. Chaos Studio helps you avoid negative consequences by validating that your application responds effectively to disruptions and failures. You can use Chaos Studio to test resilience against real-world incidents, like outages or high CPU utilization on virtual machines (VMs).
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In Azure Chaos Studio, you first select and enable your targets (either service-direct targets or agent-based targets, such as VMs and VM Scalability Sets).
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Then you create Chaos experiments on selected Azure resources, as shown in the example below. Each experiment can introduce either faults or delays, to test the resiliency of the overall infrastructure in relation to the tested Azure resources.
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Infrastructure as Code (IaC) testing frameworks and tools
The most prominent Infrastructure As Code languages in Azure are Azure ARM (JSON), Bicep and Terraform. Each of them has its own methods and tools for testing the IaC configuration. - Terratest is a tool to be used for testing Terraform modules. Terratest is implemented as a Go library. Terratest provides a collection of helper functions and patterns for common infrastructure testing tasks, like making HTTP requests and using SSH to access a specific virtual machine. - Bicep code can be tested by using Azure Pipelines or Powershell PSRule or even combine PSRule in Azure Pipelines. - ARM templates can be tested by employing the ARM template test toolkit. The Azure Resource Manager template (ARM template) test toolkit checks whether your template uses recommended practices. When your template isn't compliant with recommended practices, it returns a list of warnings with the suggested changes. By using the test toolkit, you can learn how to avoid common problems in template development. You can also test ARM Templates by using Pester and Azure DevOps. - Use Pester for Powershell or Powershell DSC scripts. - - Azure Policy Test Framework is a command line tool to test Azure Policy relying on Terraform + Golang.
Testing script template
You can find a free testing script template in the "Free Downloads" section.
References
https://learn.microsoft.com/en-us/azure/architecture/example-scenario/apps/scalable-apps-performance-modeling-site-reliability https://learn.microsoft.com/en-us/azure/chaos-studio/chaos-studio-overview https://learn.microsoft.com/en-us/azure/architecture/framework/resiliency/chaos-engineering https://learn.microsoft.com/en-us/dotnet/core/testing/ https://learn.microsoft.com/en-us/azure/developer/terraform/test-modules-using-terratest Read the full article
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pcb-technologies · 2 years
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Introducing iNPACK™ Our Miniaturization Solutions Business Unit. Specializing in Organic Substrates & Advanced Packaging Check out our recent customer conference video at PCB Technologies!
It was a huge success, showcasing our capabilities and expertise in miniaturization, substrate production, and more. Over 140 professionals attended and the level of engagement was outstanding.
We have gone from a mini-manufacturer to a full-full-fielded development center for our customers and received valuable feedback reinforcing our company's worth. https://www.pcb-technologies.com/
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fluidcontrols · 2 years
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Fluid Controls is a passionate team of experts with a legacy of engineering & innovations
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Fluid Controls is a passionate team of experts with a legacy of engineering & innovations. Our team believes in the core values; integrity, reliability, and innovation. The team at Fluid Controls always challenge themselves with every product they develop and offer. Our unique model of approaching each task with passion to deliver high quality products to our customers has kept us ahead of the competition.
Visit us: https://fluidcontrols.com/
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lovelypol · 3 months
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"Reliability Redefined: The Role of Static and Rotating Machinery"
Static and rotating equipment form the backbone of industrial facilities, encompassing a diverse range of machinery essential for various processes across industries such as oil and gas, power generation, petrochemicals, and manufacturing. Static equipment, including pressure vessels, heat exchangers, tanks, and pipelines, play a crucial role in storing, transferring, and processing fluids and gases under different conditions of pressure and temperature. These robust structures provide the foundation for safe and efficient operations, ensuring the integrity and reliability of process systems. On the other hand, rotating equipment, such as pumps, compressors, turbines, and motors, are responsible for generating mechanical energy, fluid movement, and power transmission. These dynamic components are vital for maintaining fluid flow, driving machinery, and generating electricity, making them indispensable in industrial processes. With the increasing demand for energy efficiency, reliability, and safety, the optimization and maintenance of static and rotating equipment have become paramount. Predictive maintenance techniques, condition monitoring systems, and digital twins are revolutionizing asset management practices, allowing for proactive identification of potential failures and performance optimization. Additionally, advancements in materials, design, and manufacturing techniques are enhancing the performance, durability, and sustainability of static and rotating equipment, contributing to operational excellence and environmental stewardship. As industries embrace digitalization and automation, static and rotating equipment remain at the forefront of innovation, driving efficiency, productivity, and competitiveness in the global market.
#StaticEquipment #RotatingEquipment #IndustrialProcesses #AssetManagement #PredictiveMaintenance #ConditionMonitoring #DigitalTwin #EnergyEfficiency #OperationalExcellence #EnvironmentalStewardship #SmartManufacturing #IndustrialAutomation #ProcessOptimization #ReliabilityEngineering #InnovationInIndustry
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kgbearingindia · 1 year
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KZ Bearings play a crucial role in industrial blowers as they support rotating components, reduce friction, and enable smooth operation.
👉Email your inquiry – [email protected]
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industrialblowers #industrialbearings #blowerbearings #industrialmachinery #engineeringsolutions #industrialequipment #manufacturingtechnology #industrialmaintenance #mechanicalengineering #industrialtechnology #bearingsolution #blowerperformance #MechanicalDesign #industrialengineering #heavydutybearings #rotatingequipment #industrialautomation #maintenancetips #reliabilityengineering #powertransmission #bearing #kgbearingindia #kzbrand #engineering #manufacturer #rolamentos #rodamientos #lager #rulman #cuscinetti #подшипник
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devops-jobs · 3 years
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tomreshtesting · 4 years
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Introduction to MIL STD 810H Part 1
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indtraining · 3 years
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Get an introduction to reliability engineering by going through this simple reliability example. Analyze product reliability for drinking glasses as the example application.
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rstom03 · 3 years
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Compressors that you can rely on. Curtis is built to last until your kids grow up or until you retire. A name you can trust. #generations #futuretechnology #reliabilityengineering #trustworthy #aircompressorsuppliers #compressors #dallasbusiness #fscurtis #hkaircompressors #robertmargetts #canadianboy (at Dallas, Texas) https://www.instagram.com/p/CTFRV5cCJIh/?utm_medium=tumblr
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ruggedmonitoring · 4 years
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Did you know EVs will represent 10% of the total automotive market by 2024? The International Energy Agenc (IEA) reports that 2020 is shaping up to be a hugely important year, beckoning in a decade of greener transportation in correspondence to the rising demand of #Electric vehicles (EV) and plug-in hybrids.
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bkoutlooks · 2 years
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#california #fremont #jobs #directhire #engineeringjobs #engineer #reliabilityengineer #flowcytometry Fremont, CA Reliability Engineer, Flow Cytometry Bachelor’s degree, engineering + 10yrs experience in reliability engineering in the medical instrument and/or medical device industry Direct Hire Negotiable Salary Job Description: ✨ - Build and lead the Reliability Engineering program to ensure products meet customer requirements. - Develop product reliability requirements based on industry standard and customer requirements - Develop reliability requirements from systems level all the way down to component level - Develop product reliability test methodologies - Lead and supervise reliability test team including engineers and technicians - Compile, analyze and interpret reliability test data - Write and review reliability reports Job Qualifications: ✨ - 10 plus years’ experience in reliability engineering in the medical instrument and/or medical device industry - Deep understanding of reliability theory and general practice - Hands on experience in developing reliability models - Hands on experience in planning and conducting reliability tests - Management experience is a plus Submit resume via: www.bkoutlooks.com (at Fremont, California) https://www.instagram.com/p/CdOtKjoujkZ/?igshid=NGJjMDIxMWI=
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hprtalent · 5 years
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HPRtalent: NEW ENGINEERING VACANCY! Reliability Engineer – Food manufacturing Location: Northamptonshire Salary: £40-48,000 + great benefits Details & apply at: https://tinyurl.com/y6gypw4h #hprtalent #managingyourtalent #reliabilityengineer #engineering #engineer #job #jobs #newjob #newcareer #recruitment2019 #recruitment #northamptonshire #jobsinnorthamptonshire #engineeringjobs #jobsinengineering #manufacturingengineer @hprtalent https://www.instagram.com/p/B2yn4iUFrB7/?igshid=4cqbi4nsjf2d
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carbondevops · 5 years
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Sean is an author!
Introducing the second edition of Implementing Cloud Design Patterns for AWS. With over 90 percent new content this book provides guidance for anyone considering using the Amazon Cloud. If you're a reliability engineer, solutions architect, product manage, or DevOps practitioner looking to implement repeatable patterns for deploying and maintaining services using Amazon cloud sevices, this book is for you.
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