When to Use a Video Cache

Learn more about video cache.

A video cache eCDN is one of three key options for video distribution within the enterprise. Much like traditional caching used for web content, a video cache optimizes the transfer of data on a network to improve performance for users.

When the first viewer requests a video, the cache requests it from the video source and stores a copy. As other viewers in the same location request the same video, they receive it from the local cache—not the source. Because the videos have less distance to travel, viewers experience faster start times and overall better quality of experience (QoE). In addition, you save network bandwidth for business-critical operations.

If any of the following network environments or streaming use cases describe your enterprise, a video cache eCDN might be a good technology to optimize streaming video on your corporate network.


You stream both live broadcasts and VOD

Video caching is the only eCDN technology that works as efficiently for video on demand (VOD) as it does for live streaming—making it the only streaming distribution infrastructure you need. A video cache eCDN is capable of storing larger chunks of data, which allows it to quickly reassemble and process files.

During live broadcasts, viewers are tuning in at the same time. And if you’re taking the time to produce a live event, your goal is for everyone to receive your message at the same time. A video cache eCDN uses memory (RAM) to store and serve up video segments. This reduces processing time, which in turn, optimizes delivery.

With VOD, people typically watch videos at different times, e.g. when it’s convenient for them. Video caches have the ability to store video segments as well as entire videos, so they’re readily available when the next viewer requests a video. This improves start times and overall quality of experience (QoE).

Portions or all of your network is not multicast-enabled

If you’ve been following along, we have explained why a multicast eCDN is hands down the most efficient, predictable and secure type of eCDN. But it has one major requirement: A multicast-enabled network.

The reality is most networks have been cobbled together by mergers, acquisitions and technology upgrades. A video cache eCDN is the most flexible type of eCDN. It works on any network, with any device, and if you choose a vendor-neutral eCDN, any streaming platform.

Security is important

According to a survey conducted by KPMG, security will remain a top priority for CIOs in 2021.1 Although you can argue this has to do with the shift in where people work, it’s been top of mind for CIOs for years (and probably decades!).

With the rise of video, securing video streams also needs to rise to the top of your priority list. You can deploy and manage a video cache eCDN 100% on premises, behind your firewall. Add in a layer of encryption, and your IT department is able to control and secure all elements of your video infrastructure.

To learn more about Ramp eCDN security, read Securing the Distribution of Enterprise Video Streams.

You don’t want to manage or deploy client software

Managing client software on user devices can be a big challenge. With a software-based video cache eCDN you can avoid this issue altogether. With a solution like Ramp OmniCache, you manage and provision your caches on the backend. The process is completely transparent to users, and you never burden their systems with software that is constantly running in the background.

The lack of a software client also means any device that has the ability to play a video from the source can also play it via the cache. As a result, you can easily support smartphones, tablets and devices with VDI (virtual desktop infrastructure) without any action from users.  

VPN is a requirement for remote workers

VPNs (virtual private networks) are one of the most important ways to secure corporate computing resources when employees work remotely. With so many working from home, it’s a good time to look at how your VPN is performing and how it’s impacting network performance.

VPN hairpinning is a common challenge, and it can create a massive strain on your network—especially when it comes to large data like streaming video. A video cache eCDN can help you solve this challenge. To learn more, read our blog “Mayrand on How to Avoid VPN Hairpinning.”


Beyond video cache eCDN

With three main types of eCDN technologies, Video cache is just one option for optimizing video distribution in the enterprise. Multicast, P2P networking—or a combination of all three—can help you realize true ROI from your enterprise streaming investments.

Each eCDN solution has pros and cons, and works best in different types of networking scenarios. To learn more about each type of eCDN, download Protect Your Network from Streaming Video: Guide to Selecting the Right eCDN.

1 IT Spending, Priorities, Projects: What’s Ahead in 2021, InformationWeek