Load Balancing for e-Learning: How Teikyo University Kept 6,000 Students' Lectures Streaming Without Interruption

 

When the Classroom Moves Online, the Network Becomes the Campus

Founded in 1966, Teikyo University is a comprehensive university in Tokyo with 10 academic departments — spanning medicine, the liberal arts, and science and engineering — across five campuses, anchored by its main campus in Itabashi. Long before remote learning became a global necessity, the university had been building the muscle for it: for years, every lecture was filmed and posted to its servers within 15 minutes, so students could review class material whenever they needed.

There was one catch. That lecture video was only accessible from inside the university network, so the on-campus computer rooms were perpetually full of students trying to watch. The content was ready for a digital future; the delivery model was still tied to the building.

A Sudden Shift to Learning at Scale

When universities across Japan suspended in-person lectures and moved fully online, Teikyo made the same call for the semester beginning that April. Overnight, a system designed to stream video to students sitting in campus computer rooms had to serve an entire student body connecting from home, all at once.

That kind of shift is where e-learning platforms live or die. The Itabashi campus alone has around 6,000 students, and among them are the medicine, pharmacy, and medical technology programs — students for whom grades matter intensely and for whom a frozen or dropped video stream mid-lecture isn’t a minor annoyance but a real academic risk. Handling a surge of simultaneous streaming sessions without degrading quality demanded serious traffic management underneath the platform.

Nonstop Streaming, Powered by Load Balancing

To keep its online lectures running without interruption, Teikyo University deployed the PIOLINK PAS-K — an Application Delivery Controller (ADC) that raises application availability, performance, and scalability through intelligent server load balancing.

By distributing incoming streaming traffic evenly across servers, PAS-K prevented any single server from being overwhelmed as thousands of students logged in to watch lectures at the same time. The result was exactly what a university needs from its infrastructure during a high-stakes term: it stayed invisible. Students connected, watched, and reviewed — without the buffering, lockouts, or mid-class disconnections that would have followed a server overload.

 

“Since introducing PAS-K, I haven’t received a single complaint from students or professors about being unable to access a class or getting cut off in the middle of one.”

— Director, Information Center, Teikyo University

A Foundation That Outlasts the Emergency

What began as a response to an urgent situation turned into a lasting part of how the university teaches. Even as in-person life resumed and students returned to campus, online lectures remained a permanent fixture rather than a temporary workaround — a shift Teikyo expects to hold well into the future.

With a dependable delivery foundation in place, the university is building on it rather than settling. Today PAS-K handles load balancing; going forward, Teikyo plans to extend it to web caching as well, alongside strengthening its Internet links and data center infrastructure — layering further performance gains on top of the availability it already relies on.

For any institution whose service quality now depends on streaming to thousands of users at once — universities especially — Teikyo University’s experience illustrates a straightforward truth: great content still needs great delivery. Pairing years of e-learning know-how with the server availability that load balancing provides is what lets a university deliver lectures its students and faculty can simply count on.