Scalable News Feeds with MongoDB

These features mean JavaScript can convert a static webpage to an interactive one, adding features such as search boxes, embedded videos or news feed refresh tools. These are features that aim to improve user experience by encouraging intuitive engagement. A single-thread architecture can, in theory, perform and scale much more quickly and efficiently than multiple-thread setups. This is what Ryan Dahl had in mind when he first wrote Node.js and is a big part of why it is so popular among web application developers. Vertical scaling is “scaling up” the resources of your server. It means upgrading the existing server by providing more memory (storage) and computation resources (CPU cores), making it bigger and faster.

As user behavior and preferences evolve, the system must adapt to meet their changing needs. This can involve analyzing user feedback, tracking metrics, and testing new features and designs. Write through caching makes sure the data is inserted into the database and the cache when a write operation happens. This keeps the cache relevant and leads to better performance.

news feed scalability node

This certainly slows down the event loop, complicating the user interface even more. Simple & Fast – In this use case, we would be feeding it a list of 30 IDs (from our Redis store of user’s news feed) and it would need to pull the content of the IDs . Would be great if it could be in memory and not access disk to save time. Even though your application might be lightweight, to create additional VMs, you have to deploy that guest OS, binaries, and libraries for each application instance.

So NodeJS is not necessary, but preferable, when using ReactJS. And the components should work well together, even if written by different people. The ability to split the app into separate modules allows you to think over the architecture of the app. It will be more resistant to changing requirements, and will also allow to divide the work among IT specialists. React is intended for use in the browser, but it can be rendered on the server as well. ReactJS’s data and component templates help support complicated apps.

Running across Multiple Machines with Network Load Balancing

You’ll also want to add some sort of throttling to prevent a spike in writes from breaking reads on your MongoDB cluster. Transform your App ideas into reality with our top-notch Node.js developers. With 4 years of hands-on experience, we offer Remote work on a Contract basis. Contact us now and enhance your online presence effortlessly. By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Adding this native module needs just a few lines of code and will automatically duplicate the application processes across multiple cores. The fanout service fetches friends IDs from the graph database and filters out friends based on user settings. The message queue sends friend list and new post ID to the found-out workers, which fetches data from the message queue and stores news feed data in the newsfeed cache. ReactJS is a client side environment that manipulates the frontend based on the current state of the app. It is often used as a V in MVC because it uses fast virtual DOM. This simplified programming model provides improved performance.

System Design: Chat Application

Node.js has revolutionized web development, empowering businesses to build innovative, scalable, and performant applications. Its ease of use, rich ecosystem, and active community make it an ideal choice for businesses of all sizes seeking to thrive in today’s dynamic digital landscape. As technology continues to evolve, Node.js is poised to remain a critical tool for businesses that want to stay ahead of the curve and deliver exceptional user experiences. Cloning goes hand-in-hand with using a Node.js cluster module. A load balancer serves as your “traffic cop” in front of your servers, distributing client requests across all servers capable of handling them.

It is used most commonly to publish, discover, install and develop Node programs. Essentially, it helps developers to make best use of Node.js tools and packages with a useful interface. The fact that Node.js is open source means that it is free to use and constantly being tweaked and improved by a global community of developers.

In that case, I’d recommend investigating cassandra and riak which both have been recommended to me becuase of their simple scaling models. I’d recommend storing the newsfeed data in a traditional MySQL/PostgreSQL db (pk’ed on the ID of the newsfeed item) and just pointing the individual newsfeed lists in redis at those IDs. You can then use Memcached (generally pretty cheap) to cache requests to the RDBMS.

news feed scalability node

Figure 10 shows how this can be done using two additional VMs. As an alternative to containers, you can deploy a Node.js application to a virtual machine (VM) on some host system once it’s ready for production. The VM must, however, be powered up by several layers of hardware and software, as shown in Figure 7. Then, run the following command to simulate a high workload with Autocannon. They’re all mapped to the same port and ready to listen for connections.

Using the previous example, as an illustration, you can spawn the request to all available cores. However, there is a built-in “native cluster mode” which can be used to spread the load across multiple threads. When your application’s user base is starting to grow and you have already hit the ceiling on vertical scaling, what do you do? The goal is to not hit the database for every request your application gets. Storing the results in cache decreases the load on your database and boosts performance. The increase in the number of large-scale projects developed with React JS suggests that it is the future of web apps.

news feed scalability node

Another route would be to use an open-source framework to create the backend for your feed technology. Have a look at Stream-Framework, the repositories README also has a great list of resources on building scalable feed technology. The module allows you to scale your application by creating worker processes (child processes). With this approach, the application runs its primary process at launch and spawns new worker processes as additional application requests come in.

  • Let’s see whether there is any change when you use clustering on a 4-core computer.
  • I hope you found this helpful and it gave you some pointers to move forward in your scalability endeavor.
  • Alternatively, you can avoid writing your own process manager by using the npm package called pm2 for enterprise standard applications.
  • It will be more resistant to changing requirements, and will also allow to divide the work among IT specialists.
  • Application streaming allows parts of the application to be downloadable on demand without overloading the server and the local computer.

In this algorithm, servers are assigned weights based on capacity and available resources. The higher the weight, the more requests a server can handle. This approach makes sure to use servers in the most efficient manner by matching the workload with their capabilities. Iii) Node.js employs a non-blocking event-loop mechanism that ensures high scalability and allows the server to process requests in real time. We use solr as an accelerated, denormalized data store for the news feed of the world’s largest romantic social network. Don’t bother storing just the ids as it will take too long to get the data from somewhere else.

node js development

Each one has slightly different features, so we’ve listed the pros and cons so you can decide which one is right for your project. The technology is of much greater importance than in other applications because it saves lives, keeping astronauts safe during their dangerous space expeditions. LinkedIn, the world’s biggest business and employment-oriented social networking service, also trusted Node.js when they moved their mobile app backend from Ruby on Rails to Node.js. When this happens, programmers are forced to make changes to the existing code base to make it compatible with the latest version of the Node.js API. Obviously this can create extra work that distracts from the goal of improving your application.

news feed scalability node

Node.js is a great fit for many projects, but as with any technology, it can cause problems if it isn’t properly maintained. When you encounter a problem, review the code, verify the documentation, and discuss the application with an experienced team. Many problems with Node.js stem from the lack of good practices. The open-source community is very active and offers plenty of ways of building applications.


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