Applying CDN Technology to Live Streaming: Benefits, Workflow, and Common Streaming Protocols
Live streaming platforms increasingly rely on CDN technology to handle sudden traffic spikes, improve latency and stability, and support various streaming protocols such as RTMP, HLS, and FLV, with a detailed workflow that shows how broadcasters, schedulers, and viewers interact through edge nodes.
With the rapid growth of the live streaming industry, a wide variety of applications and platforms have emerged, creating diverse streaming scenarios that demand constantly evolving video technologies; this article explores how Content Delivery Network (CDN) technology is applied to live streaming.
Live streaming platforms regularly face sudden traffic surges, especially in mobile live streaming where wireless networks are less stable than fixed broadband; CDN and cloud service providers offer essential technical support to handle peak loads, ensure content delivery stability, and enable new business models.
CDN, short for Content Delivery Network, aims to bypass network bottlenecks by distributing content to edge nodes close to users, thereby accelerating transmission speed and improving stability, which aligns perfectly with the high network quality requirements of live streaming.
The typical CDN workflow for live streaming includes four main steps: (1) the broadcaster initiates a stream and receives a streaming domain and identifier from the scheduler; (2) the broadcaster sends audio‑video data to a CDN node for processing; (3) viewers request the stream from the scheduler and receive a pull‑stream domain; (4) viewers retrieve the audio‑video data from the CDN node.
These steps are illustrated in the diagram below:
Common streaming protocols used in CDN‑based live streaming include:
1. RTMP (Real Time Messaging Protocol) – a TCP‑based protocol originally developed by Adobe for Flash video transmission.
2. HLS (HTTP Live Streaming) – an Apple‑proposed HTTP‑based protocol that delivers streams via .m3u8 playlists containing short TS segments; latency can be adjusted by changing segment length and count.
3. FLV – similar to RTMP but with different packaging; HTTP‑FLV adds a transcoding layer between RTMP and the client.
Comparative diagrams of HLS, RTMP, and FLV protocols are also provided to illustrate their differences.
360 Tech Engineering
Official tech channel of 360, building the most professional technology aggregation platform for the brand.
How this landed with the community
Was this worth your time?
0 Comments
Thoughtful readers leave field notes, pushback, and hard-won operational detail here.