AWS Lambda vs. NativeScript

Lambda excels at event-driven, short-lived tasks, such as processing files or building simple APIs. However, it's less ideal for long-running, computationally intensive, or applications that rely on carrying the state between jobs. Cold starts and constant load can easily balloon the costs.

Incentivized

I gotta be honest, after a PoC period, we choose to rewrite the whole application in a different cross-platform app. Our developers had to invest a lot of time and effort to debug a lot of plugin-related issues, which we needed to utilize the android mobile phone capabilities. QR reader, special visualizations, and fine-tuning were really hard and often resulted in writing native Android code instead of using the shared Angular code. In the end, we think that writing a standalone Android app and an Angular app would have been a better alternative, as the shared code base was so unreliable that it did not save us any time.

Incentivized

• No provisioning required - we don't have to pay anything upfront
• Serverless deployment - it gets executed only when request comes and we pay only for the time the request is getting executed
• Integrates well with AWS CloudWatch triggers so it is easy to setup scheduled tasks like cron jobs

Incentivized

• True native app. The app uses native components and that is quite noticeable in the overall performance of the app. NativeScript is also awesome in the way we can access the native APIs, so we are never really constrained by the framework. If we need, we can just dive into the native APIs without leaving our environment and language (JS).
• Cross-platform. Builds for Android and iOS. It deals with the platforms differences very well.
• Support for Vue.js. Even though it is just a community effort, the NativeScript-Vue plugin is the best alternative to build native Apps with Vue.js. That was a major factor to go with NativeScript.

Incentivized

• Developing test cases for Lambda functions can be difficult. For functions that require some sort of input it can be tough to develop the proper payload and event for a test.
• For the uninitiated, deploying functions with Infrastructure as Code tools can be a challenging undertaking.
• Logging the output of a function feels disjointed from running the function in the console. A tighter integration with operational logging would be appreciated, perhaps being able to view function logs from the Lambda console instead of having to navigate over to CloudWatch.
• Sometimes its difficult to determine the correct permissions needed for Lambda execution from other AWS services.

Incentivized

• The need to know the native Android and iOS APIs to access device hardware and other platform-specific functionality
• Not all user interface components are available for free
• NativeScript has no HTML and DOM, which requires some deep knowledge of different UI tools to be implemented instead

Incentivized

The hybrid is ok but native is better for performance and the right use case I want to go for is the performance without dealing with too many development tools.

Incentivized

I give it a seven is usability because it's AWS. Their UI's are always clunkier than the competition and their documentation is rather cumbersome. There's SO MUCH to dig through and it's a gamble if you actually end up finding the corresponding info if it will actually help. Like I said before, going to google with a specific problem is likely a better route because AWS is quite ubiquitous and chances are you're not the first to encounter the problem. That being said, using SAM (Serverless application model) and it's SAM Local environment makes running local instances of your Lambdas in dev environments painless and quite fun. Using Nodejs + Lambda + SAM Local + VS Code debugger = AWESOME.

Incentivized

Amazon consistently provides comprehensive and easy-to-parse documentation of all AWS features and services. Most development team members find what they need with a quick internet search of the AWS documentation available online. If you need advanced support, though, you might need to engage an AWS engineer, and that could be an unexpected (or unwelcome) expense.

Incentivized

The community support is excellent.
They have a slack community as well as a discourse forum
forum.nativescript.org
Both of these offer community driven support.
The forum is more for a threaded discussion. The slack community is more for a quick talk.

Incentivized

AWS Lambda is good for short running functions, and ideally in response to events within AWS. Google App Engine is a more robust environment which can have complex code running for long periods of time, and across more than one instance of hardware. Google App Engine allows for both front-end and back-end infrastructure, while AWS Lambda is only for small back-end functions

Incentivized

Ionic Ionic is an excellent Angular-based framework for mobile, and it does give a lot of access to the native device api's. However, the technology is based on Cordova, which means the apps being built are just webviews, with html, css and JS all running on the UI thread, and potentially creating very slow experiences for users. NativeScript is a truly native solution, and so provides a faster user experience. ReactNative We evaluate ReactNative, and found it much the same as NativeScript. The main difference is that your JS is all written with React, while NativeScript lets you choose between normal JS, Angular, and Vue. For our team, Angular was the most appropriate choice.

Incentivized

• Positive - Only paying for when code is run, unlike virtual machines where you pay always regardless of processing power usage.
• Positive - Scalability and accommodating larger amounts of demand is much cheaper. Instead of scaling up virtual machines and increasing the prices you pay for that, you are just increasing the number of times your lambda function is run.
• Negative - Debugging/troubleshooting, and developing for lambda functions take a bit more time to get used to, and migrating code from virtual machines and normal processes to Lambda functions can take a bit of time.

Incentivized

• The poor quality of NativeScript documentation has the potential to weigh heavily on development timelines, budgets, and QA resources in a NEGATIVE manner.
• The poor interoperability of NativeScript plugins can significantly increase development time.
• The need to seek out professional instruction to learn how to use NativeScript effectively may become a burden on your budget.
• The number of breaking changes between versions of NativeScript, may cause your development efforts to lag further behind the most recent releases of NativeScript and your other chosen environments than you are accustomed to.
• NativeScript still does not support the latest major version of Angular. Any significant changes to the other environment components of your systems may hold you back even further while NativeScript plays catch-up.