The most relevant part is the central architecture more than the specific backend. For me, it makes sense to go for an event-driven solution. In this case, an event is emitted on every new data, and one or more listeners react to it. In AWS, you can easily get this by storing your data in DynamoDB, which is pretty fast, and have as many lambdas working on the received data (here you can find more details). This way, you keep your worker(s) busy fetching data while others consolidate it. I wouldn't get too crazy on the lambdas, and I'd start with one as there will be only one client by your description. My only concern is how similar the APIs you're consuming are. Depending on that, it may be easier to have different lambdas by target API. My only note on the backend language is that if you want low latency, I'd discard Python and Ruby and choose Go (I know that is not in the list, but given that you're open to learning a new language, you could give it a try). It is easy to learn, has excellent performance, and is the only Lamdba runtime with an X (1.X) in the supported language, making it a great choice.

Java in general, in my opinion, is somewhat outdated in 2021. C# is a better language, and therefore, I think ASP.NET (Core/.NET 5) should be used over it. Node.js isn't bad if you are getting started, or if you need to prototype an app. I use Node in production because of TypeScript, but .NET is a really good framework that has excellent performance.

I do not know Spring or your company/specialty. Of course it must be learnable and I won't tell you to give up on anything. Java is and will remain valuable.

Regardless, I don't think "lesser scope" is a valid strike against Node.js here. Node.js fulfills JavaScript's original vision of an everywhere language and can run anywhere that Java can. It serves webpages, communicates with hardware, powers command line tools, and builds desktop applications. A huge complexity-saver for teams running many environments (my biggest regret is that it cannot run a microcontroller).

Node.js' biggest practical weakness is that JavaScript is less structured than Java. Luckily, the large influx of Java developers has been helping with this: gaps like constants and private properties are gradually filling in, and TypeScript firms up the types to the point where JavaScript looks a lot like Java.

Probably more potential competition from the larger pool of JS developers, but the compensation is allegedly similar so I guess there is a similar supply/demand situation.

hi this depends where you want to advance . If you want to work for an big aged company with a lot of legacy go the spring way (banks, insurances netflix etc ) if you want to go the new agile fast cloud way learn node js it is much more suited for cloud and micro service even spring cloud can do that as well but it is much more heavier

Kamrul Hasan, Don't choose dying technologies with small communities. How many startups do you think use Spring and Django? Use Google Trends to compare technologies. Study the StackOverflow developer survey and job websites to see what technologies are wanted. Few teams can afford to train you to get up to their level so be a life-long learner. Embrace the dawn of a new industry and become an expert.

I recommend you stick to Java Spring as you already have experience with the technology, i suggest you master this technology and then if Django seam to be very interesting to you, django is a framework you can easily pickup as python is also easy, you have to probably be able to manage the context switching between a static typed language like Java to dynamic language like python

Hi Kamrul,

It really depends on the kind of project and whether you feel more comfortable with Java or Python. Both are excellent frameworks, with a huge community and learning material. I've been working with Spring Boot since I started coding almost and I can assure you it's the perfect combination for Java. The learning curve may be harder that Django, but once you know the basics you're good to go. I can't tell you much about Django but you must now by now that it has a great reputation with Python users. In any case I don't think you can go wrong with any of these two. My advice is, if you are already familiar with the Spring framework, give Spring Boot a try, because you're going to find out that it just makes the whole Spring experience so much easier. Let us know what you chose!

It depends on what you want. Spring is Java-based whereas Django is Python-based. The question rather is Java vs Python. I personally recommend Python as it's shorter and easy to learn. But Java has advantages in really big systems.

Both are in active development and had huge community support. It really depends on you what you are comfortable with. Both are married to their respective languages. I choose Python over Java because of its simplicity and readability. To develop in java you need to write a lot of code. That's how java is. The best part I love with Django is its synchronization with Databases.

Go with Node.js. There's something really satisfying about being able to use a single language across your entire tech stack. Especially once you integrate GraphQL, which is effectively JSON.

Your second best option is Go, but the ecosystem around Node.js is quite a bit stronger. This will play a big factor when you start building functionality like file management, messaging (especially in real-time), and authentication. The libraries and documentation are just stronger for Node.