Why Janus is Digital Samba's Top Choice for SFU?
Tags: janus, sfu, opensource, api
Published: 2024-02-27 15:59:05

At Digital Samba, our commitment to leading-edge real-time communication solutions has consistently placed us at the vanguard of the industry. This experience has solidified our preference for Janus as the go-to Selective Forwarding Unit (SFU) for our WebRTC-based applications. Janus distinguishes itself as a highly adaptable and scalable WebRTC server, offering us the robustness and versatility needed to provide top-tier video conferencing and collaborative solutions to our clientele.

Within this article, we aim to unpack the nuances of Janus, highlighting its key functionalities, advantages, and its unique position in the landscape of WebRTC servers. We'll also share insights into our decision-making process and experiences, showcasing [why Janus has been our media server of choice for more than five years](https://www.digitalsamba.com/blog/why-janus-is-digital-sambas-favorite-sfu) in production environments.

## What is the Janus server?
Janus stands as a formidable and adaptable WebRTC server, playing a pivotal role in Digital Samba's suite of real-time communication offerings. Serving as a Selective Forwarding Unit (SFU), it orchestrates the seamless interaction of WebRTC clients, ensuring streamlined communication among users.

Fundamentally, [Janus](https://janus.conf.meetecho.com/) is crafted as an open-source, pluggable server, crafted to empower developers to forge and meld real-time communication functionalities within their digital products. Its pliable design not only accommodates the development of bespoke plugins but also broadens Janus's applicability across diverse scenarios, including video conferencing and Internet of Things (IoT) deployments.

Additionally, Janus's compatibility with a variety of [signalling protocols](https://www.digitalsamba.com/blog/what-is-webrtc-signalling), encompassing SIP and WebSockets, positions it as an exemplary choice for weaving WebRTC into pre-existing communication frameworks. This adaptability, coupled with its established dependability and efficiency, positions Janus as a preferred choice for [Digital Samba](https://www.digitalsamba.com/) and a broad spectrum of developers eager to create resilient, scalable real-time communication platforms.

## Why choose the Janus server?
Opting for Janus Server as your WebRTC server brings several distinct advantages for developers and organisations aiming to deploy real-time communication systems.

A standout feature of Janus Server is the dedicated support provided by its developers, Meetecho, ensuring an edge in direct assistance, swift implementation, and bespoke troubleshooting and customisation capabilities over other open-source SFUs.

Key reasons why Janus is favoured over alternative SFUs include:

- **Open-source and autonomous**: Unlike some WebRTC servers like Jitsi, which is under 8x8, and Mediasoup, whose principal developer is affiliated with Miro, Janus maintains independence, free from corporate ownership. It is available under the GPLv3 license, offering a cost-efficient yet robust option for developers.
- **Proven stability**: With its inception dating back to 2014, Janus is among the veterans in the WebRTC media server domain, proving its reliability and effectiveness in media delivery for more than a decade, including over five years in our deployment.
- **Exceptional flexibility**: The server's modular design facilitates extensive customisation through plugins, allowing for precise adaptation to specific project requirements.
- **Scalability**: Janus is built to accommodate increasing demands seamlessly, supporting horizontal scaling through additional server instances for enhanced responsiveness and reliability across fluctuating loads. Its plugin ecosystem enables virtually unlimited vertical scaling to cater to extensive audience sizes.
- **Enhanced security**: With a focus on security, Janus incorporates modern encryption protocols, including end-to-end encryption (E2EE), safeguarding communications against unauthorized access.
- **Broad media and protocol support**: The server's adaptability is further evidenced by its capacity to manage various media formats and protocols, including WebRTC, SIP, RTSP, and RTP, offering a versatile solution for diverse media communications.
- **Extensive codec compatibility**: To ensure top-notch performance across varied devices and network conditions, Janus supports an array of codecs, optimizing media delivery for a broad user base.

## How does Janus stand out from other WebRTC servers?
When considering WebRTC servers, Janus, alongside Jitsi, Pion, and Mediasoup, emerges as a prominent choice for real-time communication solutions. While each server has its niche — Jitsi excelling in creating Google Meet-like environments, Pion favoured for its customisability in Go environments, and Mediasoup known for scalable deployments — Janus distinguishes itself through its superior scalability and vibrant community support, driving DigitalSamba's preference for this technology.

## Janus's Architectural and API Distinctions

### Modular Design of Janus
Janus's architecture stands out due to its modular and flexible design, setting it apart from competitors. At its core, Janus manages all WebRTC functions and server-side processes. This core is augmented by pluggable modules, accommodating a variety of applications from text messaging to video conferencing, and streaming services. This modular strategy allows for the extension of Janus's functionalities or its integration with other systems, highlighting its versatility for diverse project requirements.

### Comprehensive Janus APIs
The server's APIs amplify its adaptability and integration ease into web platforms. Janus supports a comprehensive suite of protocols beyond WebRTC, such as HTTP, [WebSocket](https://www.digitalsamba.com/blog/webrtc-vs-websocket), RabbitMQ, MQTT, and UnixSockets, catering to a wide array of networking environments and application demands. Particularly, the JavaScript API offers a user-friendly way for web developers to engage with Janus, facilitating the creation and management of video rooms and audio bridges, among others. [Janus's official documentation](https://janus.conf.meetecho.com/docs/JS.html) provides extensive insights into leveraging the JavaScript API for immersive web experiences.

Developers can tap into Janus's diverse plugin ecosystem, utilising media manipulation features directly within web interfaces. The API's diverse methods and callbacks ensure granular control over communications and media streams, underpinning Janus's capability to support complex multimedia solutions with its flexible architecture and API offerings.

## Implementing Janus in Your Project

Incorporating Janus into your application encompasses several key steps:

1. **Installation:** Initiate by installing Janus on your server, and selecting a version that matches your system's specifications. Comprehensive installation guides, [documentation](https://janus.conf.meetecho.com/docs/README.html), and [sample applications](https://janus.conf.meetecho.com/demos.html) are available on Janus's [official website](https://janus.conf.meetecho.com/) or [GitHub page](https://github.com/meetecho/janus-gateway).
2. **Configuration:** Tailor Janus to fit your application's requirements. This involves activating preferred plugins, setting up transport protocols, and securing your configuration to ensure a robust setup.
3. **API engagement:** Employ the Janus JavaScript API for connecting your application to the server, managing sessions, and overseeing the connection lifecycle efficiently.
4. **Plugin utilisation:** Connect with specific Janus plugins for required services, such as video conferencing or live streaming, each offering unique features necessitating precise application handling.
5. **Session handling:** Oversee session and plugin management within your application's logic, including room creation/joining, stream management, and communication protocols.
6. **Testing and launch:** Conduct extensive testing to confirm stable performance and user satisfaction, addressing any issues before full-scale deployment.
This guide outlines the foundational steps for integrating Janus into your application, setting the stage for advanced real-time communication functionalities. For in-depth guidance, consult the [Janus documentation](https://janus.conf.meetecho.com/docs/).

## Issues with the installation of Janus and debugging

When integrating Janus into your infrastructure, you may encounter a variety of challenges, typically concerning dependencies, setup configurations, or compatibility with specific versions of Janus.

Below are strategic approaches to identify and resolve these hurdles:

### Resolving dependency hurdles
Janus depends on numerous libraries and utilities for full functionality. Should you face errors tied to absent dependencies, it's crucial to adhere strictly to the provided installation instructions, ensuring all required packages are installed. The Janus GitHub repository meticulously lists these dependencies for reference.

### Configuration troubleshooting
Configuration mishaps can obstruct Janus from initiating properly. It's advisable to scrutinise the **janus.jcfg** and associated plugin config files for any syntactical inaccuracies or misplaced settings. A keen eye on network interfaces and port configurations is essential, particularly if Janus faces connectivity issues.

### Version compatibility checks
To ensure smooth installation and operation, verify that the Janus version you opt for aligns with your operating system and other software frameworks you utilise. In some instances, opting for the most recent Janus release or updating your system packages can rectify compatibility and installation dilemmas.

### Leveraging debugging logs
Janus generates logs that are pivotal for diagnosing issues. By augmenting the verbosity of the log output via the configuration file, you can obtain granular insights into Janus's operations and pinpoint where complications may be arising.

### Engaging with the community for support
Encountering roadblocks? The Janus community, accessible through GitHub and Discourse forums, is a treasure trove of knowledge and experience. Engaging with this community can provide you with bespoke advice and solutions gleaned from a wide range of user experiences.

These strategies are designed to guide you through the common pitfalls encountered during the Janus installation process, aiding in a smoother setup and deployment.

## Developing a video conferencing application with Janus through Digital Samba

Utilising Digital Samba for your video conferencing app development ensures you harness all the benefits of Janus without delving into the complexities of its operation.

Digital Samba's ready-to-use video conferencing API integrates seamlessly with Janus for efficient media handling, offering a direct pathway to robust app development without requiring direct engagement with Janus.

Embark on a streamlined development journey with Digital Samba, capitalising on our extensive SDK and API for a foundation built on Janus's dynamic real-time communication prowess.

### Integration steps simplified
Step 1: Register with Digital Samba
Initiate by [creating your account with Digital Samba](https://dashboard.digitalsamba.com/signup), unlocking access to an array of tools and functionalities essential for crafting a cutting-edge video conferencing solution.

Step 2: Implement Digital Samba SDK
Proceed by integrating the [Digital Samba SDK](https://www.digitalsamba.com/video-sdk) into your project. This SDK presents a collection of straightforward [APIs and instruments](https://www.digitalsamba.com/video-api) aimed at facilitating video conferencing functionality, elevating user interfaces, and flawlessly merging with existing web technologies. For detailed integration guidance, refer to our [comprehensive tutorial](https://www.digitalsamba.com/blog/how-to-integrate-video-conferencing-into-your-website).

Incorporating a video conferencing room into your site can be as simple as embedding an HTML iframe:

```
<iframe allow="camera; microphone; display-capture; autoplay;" src="{room_url}" allowfullscreen="true"></iframe>
```
Moreover, the Digital Samba API connects you directly to the video conferencing framework, simplifying the management of video rooms, participant interactions, and media flows.

Step 3: Exploit advanced features via Digital Samba
Next, enhance your application by leveraging our SDK's [extensive features](https://www.digitalsamba.com/features), including screen sharing, session recording, customisable layouts, and more. These advanced capabilities are designed to augment user engagement and position your application ahead of the curve.

Step 4: Validate and launch
Conclude by rigorously [testing your application](https://www.digitalsamba.com/blog/a-comprehensive-guide-to-testing-webrtc-applications) to ensure its performance, scalability, and overall user experience meet your standards. Upon achieving satisfaction, proceed to launch. Partnering with Digital Samba guarantees your application is optimally set up and supported by a reliable, scalable backend infrastructure.

## Harness the capabilities of Digital Samba powered by Janus media server

Bear in mind that Janus plays an instrumental role behind the scenes of Digital Samba's video conferencing offerings, providing essential real-time communication functionalities, including video and audio broadcasting, along with data sharing capabilities.

### Digital Samba's signal forwarding unit (SFU) approach
With Digital Samba, there's no requirement for you to delve into the installation, configuration, or direct engagement with Janus. Our comprehensive SDK and API package is designed to streamline your development process, handling all the intricate technicalities so you can concentrate on refining your application.

Privacy and scalability are at the forefront of our platform's design. Our SDK and API are meticulously crafted to be data-neutral, ensuring that no personally identifiable information (PII) is captured or stored. This commitment to privacy is complemented by our system's scalable architecture, which seamlessly supports an extensive range of conferences and participants simultaneously, all without necessitating any manual adjustments or supervision on your part.

Opting for Digital Samba for your next real-time communication project means choosing a platform that is robust, scalable, and rich in features. By integrating Janus through [Digital Samba's video conferencing solutions](https://www.digitalsamba.com/), you gain access to our [exhaustive documentation](https://docs.digitalsamba.com/reference/) and exceptional customer support, equipping you with all the tools necessary for crafting a standout solution.

[Embark on your development journey](https://www.digitalsamba.com/contact-sales) with the Digital Samba video conferencing platform today and discover the unparalleled efficiency and functionality of our preferred SFU.