Sergey Nivens - Fotolia


Django vs. Node.js: Pick the right web development framework

Understanding the differences between Django and Node.js comes down to understanding their data capabilities and the programming languages that make up each one's history.

As part of the planning process for a typical web or mobile development project, programming teams will need to decide on the framework they'll use to design and govern the apps they build. This choice largely depends on the project's overall business requirements, as well as the skill set and specific expertise of your team. However, there are other factors to consider, such as whether the development team wants something that is more out of the box, or something that is geared toward high levels of customization.

Django and Node.js are two popular Open Source framework options capable of meeting the needs of web and mobile developers. Each one is unique, however, and the choice between Django vs. Node.js will mainly come down to the requirements of your project. In this article, we'll give a brief overview of each framework's history and notable features. Then, we'll review the key comparison points that often help developers decide which framework to use for their mobile and web app development project.

History of Node.js and Django

Django was released in 2005 as an open source framework for feature-rich web app development. Much of Django's features are geared toward speeding up the design and deployment process, mainly by enforcing simple syntax and readable code. One of Django's major features is its object-relational mapping (ORM) layer, in which data manipulation simplifies database builds. Rather than write complex SQL queries, developers can access the ORM layer to translate corresponding Python code into the appropriate query language. This can also help streamline create, read, update and delete operations.

Node.js also started as an open source project in 2009 and established its reputation among developers building networked web applications on Linux, MacOS and Windows platforms. This popularity spread to mobile application designers as well, who were drawn to its ability to handle database integrations, its proficiency in routing from multiple nodes, and the accessible template engines that provide "out-of-the-box" functionality for new applications.

Benefits of Django

Django possesses a number of attractive qualities, particularly when it comes to data handling, process acceleration and support:

  • Access to libraries. Since it is based on Python, it provides developers access to an enormous number of established Python libraries. The framework also provides a form library that renders stripped-down forms in an HTML format. This provides additional control over front-end design, since developers can ensure specific forms linked to an application match its visual appearance.
  • Simplified data modeling. As a Model-Template-View framework, Django converts data into a specific model, makes it conform to application logic and then sends that model to the templates which structure the data. The built-in Django templating language generates dynamic HTML, enables code reuse, separates logic from views and filters content before it reaches the browser.
  • Web app compression. Django provides search engine optimization tools that reduce webpage loading times through cached pages. The django-webpacker compressor tool makes it possible to bundle multiple CSS and JavaScript files into a single file.
  • Security. Developers can also access a range of security features in Django. For example, the framework offers mechanisms to insert secret, user-specific tokens into POST requests, which helps defend against cross-site scripting and request forgery. Django also offers features that guard specifically against SQL injection attacks.

Limitations of Django

The shortcomings to watch out for in Django revolve around caching, request handling and component packaging:

  • Caching risks. Due to the framework's modularity, developers can be certain that each element of a stack will function independent of the others. However, this requires careful configuration of the cache manager to guard against caching an entire site.
  • Multiple request handling. While Django is an effective framework for building web and mobile apps, its ability to handle multiple simultaneous requests is somewhat limited.
  • Deployment can be confusing in Django due to numerous components combined together, such as all models being included in a single file. It can also be hard to recognize and pinpoint default errors inherited from templates.

Benefits of Node.js

At its core, the appeal of Node.js comes down to the prewritten code and class libraries it provides for both simple and complex data structures. However, there are some specific traits that make it appealing:

  • Support for JavaScript. js allows developers to write both the front-end and back-end application code in JavaScript, and create modules of reusable code that they can retrieve without much hassle.
  • Multi-operation handling. js can handle simultaneous operations, and excels with real-time systems. As an event-driven framework, requests in Node.js are put on an event loop, processed, and then delegated appropriately. This allows the application and services to handle multiple requests at once, which is a huge plus for distributed application systems.
  • Robust package repositories. The Node Package Manager (NPM) repository provides hundreds of thousands of development packages developers can browse for the specific functions, features and components needed for their particular project. Developers can also employ NPM tools that help publish projects, streamline package installation, manage versions and control dependencies.
  • Simple database design. When developing databases, programmers don't have to declare a strict schema and they can more easily convert database entries into JavaScript objects to simplify data access.
  • Async process support. The async.hooks module found in Node.js provides an API that registers calls and tracks asynchronous requests made across Node.js applications. The framework also provides scalability by allowing developers to access clusters of modules and run multiple instances of an application inside one machine.

Drawbacks of Node.js

For all its established benefits, Node.js still carries its share of concerning drawbacks as well:

  • Data processing limits. While Node.js is effective at handling asynchronous processes, its code still follows single threaded execution. This makes it precarious to use for heavy, long-running CPU tasks or machine learning programs, since it's likely that parallel code processing will block servers.
  • Callback overloads. As a flipside to its ability to handle asynchronous requests, developers run the risk of overloading the number of calls the application attempts to handle at once. This can have frustrating impacts on performance and make it difficult to clean up code.
  • JavaScript shortcomings. The weaknesses traditionally inherent in JavaScript libraries, such as database operations or parsing XML, also carry over to Node.js. Developers frustrated with JavaScript limitations may not find the right amount of relief in Node.js.

The Django vs. Node.js decision

Both frameworks offer competitive strengths and prohibitive drawbacks, so it's difficult to say if one is better than the other. However, the benefits and drawbacks listed above may help you make the final call on Django vs. Node.js.

Ultimately, the best thing to do is base your decision on what makes your development team comfortable. If a project is very data-heavy, and your developers are comfortable in Python, Django might be the right way to go. Alternatively, Node.js is likely the right choice for traditional JavaScript shops that want a simple way to create high-performing web applications that aren't geared toward intensive data handling.

Dig Deeper on Application development and design

Software Quality
Cloud Computing