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The core Web application of Raygun is still a Microsoft ASP.NET MVC application. Not too much has changed from a fundamental technology standpoint. We originally built using Mono, which just bled memory and would need to be constantly recycled. So we looked around at the options and what would be well suited to the highly transactional nature of our API. We settled on Node.js, feeling that the event loop model worked well given the lightweight workload of each message being processed. This served us well for several years.
When we started to look at .NET Core in early 2016, it became quite obvious that being able to asynchronously hand off to our queuing service greatly improved throughput. Unfortunately, at the time, Node.js didn’t provide an easy mechanism to do this, while .NET Core had great concurrency capabilities from day one. This meant that our servers spent less time blocking on the hand off, and could start processing the next inbound message. This was the core component of the performance improvement.
We chose .NET because it was a platform that our team was familiar with. Also we were skilled enough with it to know many performance tips and tricks to get the most from it. Due to this experience, it helped us get to market faster and deliver great performance.
When starting a new company and building a new product w/ limited engineering we chose to optimize for expertise and rapid development, landing on Rails API, w/ AngularJS on the front.
The reality is that we're building a CRUD app, so we considered going w/ vanilla Rails MVC to optimize velocity early on (it may not be sexy, but it gets the job done). Instead, we opted to split the codebase to allow for a richer front-end experience, focus on skill specificity when hiring, and give us the flexibility to be consumed by multiple clients in the future.
We also considered .NET core or Node.js for the API layer, and React on the front-end, but our experiences dealing with mature Node APIs and the rapid-fire changes that comes with state management in React-land put us off, given our level of experience with those tools.
We're using GitHub and Trello to track issues and projects, and a plethora of other tools to help the operational team, like Zapier, MailChimp, Google Drive with some basic Vue.js & HTML5 apps for smaller internal-facing web projects.
I chose .NET Core because it finally let me work natively on my macOS and Linux machines but collaborate with coworkers using Windows. Devs use the devices that they feel most capable with.
Having services that can run without changes on Linux let us migrate to containerized deployments on Kubernetes without much effort. The performance we've gotten from small ASP.NET Core services running on Alpine images has been great.
While the versioning of SDK and libraries/meta packages/etc has been kind of nuts.. We also keep getting new features that are really valuable and easy to package into our services.
Just rolling out v3 of the WebJobs SDK which brought simpler DI, filters and more to our Async backend workers. Also preparing to run v2 of Functions in our Azure Kubernetes cluster with virtual-kubelet.
In the last year, the community has finally started heavily moving towards NETStandard 2.0 which has eliminated some of our last points of frustration -- not finding compatible clients/libraries/tools that we could use from .NET Core apps (and, funny enough our older .NET Framework apps too!).
We're all in on .NET Core now.
I have been working in .NET for more than 10 years. As an architect, I understand that enterprises want to lower costs. Full .NET framework, although excellent, has lot of costs around it - starting from Visual Studio for development (Enterprises cannot use Community edition) to Windows Server licensing for hosting. .NET Core makes development faster, cheaper and accessible to anyone. It is easier to convince bosses to go with .NET Core than with the full framework. With Visual Studio Code, development teams can install it in minutes compared to the full day they had to submit their laptop to IT team to get full Visual Studio installed. .NET Core is also highly performant and has been my choice for an IoT project that I have been executing with microservices running in a Docker container managed by Kubernetes! Unless I have a specific need, I preach the gospel of .NET Core.
I use .NET because of its community and Microsoft's commitment to open source. Game backends require many different design strategies, ranging from latency sensitive customer facing services to high-throughput eventually consistent data pipelines. Performance, tooling, and predictability are qualities that make these services successful and .NET helps me get there by having framework features which promote quick prototyping, but are mature enough to harden for production.
I use .NET Core 2.1 because it allows me to bring my OSS applications cross-platform. We're using .NET Core for everything since version 1.1- both front and back end services, or windows services. Moving to newer versions did cause us some problems though, because of the too many breaking changes brought by those versions. We really like dotnet cli extensibility model "DotnetCliTool", because we create plugin for docker build, reportgenerator.
I use .NET because because it allows me to use a functional language like F# and still get the benefit of a massively rich ecosystem of libraries and tools. Coupled with the ability to target different OSs and platforms (from cloud to mobile to IoT) it really feels like a solid investment. In my current contract we are using .Net to build REST APIs and websites - we do this using F# and the Giraffe framework (a functional wrapper on Asp.Net Core) allowing us to benefit from teh advantages of functional approach and yet leverage security and speed of Asp.Net Core. We package these as Docker containers based on an Alpine image and deploy into Azure manage Kubernetes service in the form of Helm Charts. The build and continuous delivery are handled by Azure Dev Ops.
Context: GivePenny is the charity sponsorship platform for the modern world. We are re-platforming onto .NET Core-based microservices and ReactJS-based micro-frontends in Docker containers hosted on Azure Kubernetes Service.
We use .NET Core because of the easily attainable high quality bar for our microservices. We love the succinct yet clear C# language making code easy to read. We rate the advantages of the strongly-typed aspect of C# and of compiled (so type-checked) unit tests in a "backend" service context. The test stack and tooling support in Visual Studio around service tests, contract management, unit tests, web APIs and publish/subscribe message handlers is easy to work with. The easy integration between Visual Studio and Azure Resource Manager based infrastructure, Azure DevOps, Nuget and Docker makes build, publishing, release and hosting very easy. The cross-platform nature of .NET Core allows Windows and Linux developers to co-exist and services to be hosted on multiple platforms.
I started using .NET in the early 2000s. Ever since version .NET 3.5 (and even .NET 2.0 if we take a proper generics implementation into account), C# was dominating in the feature battle against its rival, yet wasn't advancing significantly in the product coverage due to its platform dependency.
Thus I was very excited to hear the news about plans to develop an open-sourced cross-platform .NET Core framework. We started using .NET Core in production from version 1.1, and a global decision to migrate the entire solution to .NET Core was made with the release of .NET Core 2.0. Now we have more than 100 .NET Core (micro)services running on Linux containers inside Kubernetes, using Kafka for reactive communications and a number of open-source relational and NoSQL storage engines.
I use .NET because of the quality of the environment, for every need there is a .NET solution for doing it. The Microsoft solution for doing anything is well documented and the community is very active. The .NET Stack is full, meaning there is everything a stack need, every part : database, server, cloud, AI, mobile, backends and frontends. And of course : IDE => Visual Studio ! There is no competition to Visual Studio.
I use .NET Core basically because my code runs everywhere! Being able to host ASP .NET Core web applications on Linux, Mac, and Windows environments allows me to deliver cross-platform solutions for all my customers so they don't have to acquire specific technology/hardware anymore!
Moreover, .NET is an amazing technology which is focused on productivity: I can develop mobile, web, desktop, IoT and AI solutions and all I need is C#, a really powerful (and easy-to-learn) language. Add cloud-powered modules to the equation and you'll get a boost in your software!
I first found .NET in 2003 when I first began learning to create software. Every year since then, I've watched as .NET matured into something great, and now we have .NET Core! At Contessa Health, we use .NET Core for a mixture of things including fine-grained and coarse-grained web services, worker processes for long running tasks, and for our Azure Functions that serve as a replacement for distributing our base class libraries. As a startup, we are constantly evaluating technologies to make sure we stay fresh, and we keep coming back to .NET Core because of its ecosystem, maturity of the tooling, and for its ability to help us iterate and move quickly. Take all of that and combine it with the Kubernetes ecosystem, and we have an easy way to orchestrate and compose power service offerings that meet the needs of our customers. It cannot be said enough that Microsoft’s commitment to open source has yielded incredible benefits for small companies such as ourselves. Our voices are heard, and we get to help make .NET Core better, which in turn helps everyone else.
I've used .NET for many years, but only in recent years, after Microsoft introduced .NET Core, I've found a new love and excitement for the technology again. The main driver for us using .NET Core is not that it is cross platform compatible, open source or blazingly fast (which it is!), but the fact that we can use (what we consider) the best programming languages (mainly F# and C#) to carry out our jobs without sacrificing the other benefits.
Today we run most of our web infrastructure on .NET Core in Docker containers, deployed into a Kubernetes cluster which spans across multiple time zones in the Google Cloud and we couldn't be happier. Due to the portability of the .NET Core platform we are even able to develop many new services as serverless functions with F# which has become an absolute game changer.
Our focus is on mobile. I use .NET because most of my work involves Xamarin. We haven't had a need for .NET Core lately since Xamarin covers the iOS, Android bases. .NET Core seems best suited to larger organizations who need to port and migrate between Windows, Linux, and macOS. Seems incredibly useful, particularly the Windows/Linux crossover. But for us, Mono takes care of that already in Xamarin.
I have benchmarked Node.js and other popular frameworks using a real life application example. You can find the results here: https://firstname.lastname@example.org/web-rest-api-benchmark-on-a-real-life-application-ebb743a5d7a3
We decided to move the provisioning process to an API-driven process, and had to decide among a few implementation languages:
- Go, the server-side language from Google
We built prototypes in both languages, and decided on NodeJS:
- NodeJS is asynchronous-by-default, which suited the problem domain. Provisioning is more like “start the job, let me know when you’re done” than a traditional C-style program that’s CPU-bound and needs low-level efficiency.
- NodeJS acts as an HTTP-based service, so exposing the API was trivial
Getting into the headspace and internalizing the assumptions of a tool helps pick the right one. NodeJS assumes services will be non-blocking/event-driven and HTTP-accessible, which snapped into our scenario perfectly. The new NodeJS architecture resulted in a staggering 95% reduction in processing time: requests went from 7.5 seconds to under a second.
The server side of Trello is built in Node.js. We knew we wanted instant propagation of updates, which meant that we needed to be able to hold a lot of open connections, so an event-driven, non-blocking server seemed like a good choice. Node also turned out to be an amazing prototyping tool for a single-page app. The prototype version of the Trello server was really just a library of functions that operated on arrays of Models in the memory of a single Node.js process, and the client simply invoked those functions through a very thin wrapper over a WebSocket. This was a very fast way for us to get started trying things out with Trello and making sure that the design was headed in the right direction. We used the prototype version to manage the development of Trello and other internal projects at Fog Creek.
All backend code is done in node.js
We have a SOA for our systems. It isn't quite Microservices jsut yet, but it does provide domain encapsulation for our systems allowing the leaderboards to fail without affecting the login or education content.
We've written a few internal modules including a very simple api framework.
I don't know how well this will scale if/when I have hundreds of people connected simultaneously, but I suspect that when that time comes, it may be just a matter of increasing the hardware.
Used node.js server as backend. Interacts with MongoDB using MongoSkin package which is a wrapper for the MongoDB node.js driver. It uses express for routing and cors package for enabling cors and eyes package for enhancing readability of logs. Also I use nodemon which takes away the effort to restart the server after making changes.
Microsoft has done an incredible job of keeping the .NET Framework powerful and stable. It is well designed and keeps getting more robust with each release. It isn't the most popular technology in this space, but I think a good case can be made to use .NET in many new projects.
As we started on Windows Phone we use C# and .NET for most of our apps and sites. Being a small team of 2, using .NET enables us to work on each part of the service without having to switch to different languages.
I use .NET alongside with C# since my university studies, and I really enjoy it. Especially .NET Core, which is the best thing that happened to Microsoft since... ever.
Server side development language and frameworks: ASP.Net MVC 4, Asp.Net WebApi 2, Razor View engine, Moq, Entity Frameworks, etc.