Spotify-sized questions give freeCodeCamp's system-design course its homework

Hayk Simonyan's course pairs an interview framework with architecture, scaling and real-time messaging examples.

Channel: freeCodeCamp.org Story of October 15, 2026Trari Newsroom

Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.

Design Software Systems Like a Senior Engineer – Complete Course

freeCodeCamp.org drew about 3.6 million views over seven days, a substantial week in its education neighborhood. The Infographics Show had a much larger weekly audience, while CrashCourse's daily viewing was running below its usual level. At freeCodeCamp, daily views were nearly double the usual pace, even as subscribers remained unchanged.

The biggest of three new uploads was "Design Software Systems Like a Senior Engineer – Complete Course," reaching roughly 186,000 views. Hayk Simonyan supplies a five-step framework for handling vague requirements under interview pressure, then works through systems modeled on services such as Spotify and WhatsApp. The chapters move beyond architecture diagrams into offline delivery, encryption, failure handling and feature rollouts. This upload acknowledges channel sponsorship support.

The comments supply a useful next assignment: one viewer asks how to practice these concepts and prepare for interviews after finishing the course. Another offers a programmer's circular joke about moving from monoliths to microservices and eventually back again. Choosing an architecture is rarely the end of the conversation.

The other new courses bring that concern with working systems down to the implementation level. Rahul's n8n course includes human approval steps, retries and monitoring alongside AI agents. Tapas Adhikary's TanStack Router course tackles navigation, authentication and loading states, including a section on when not to use router context.

Simonyan's course is also the channel's most active upload right now. Next comes the older mobile-app course from @codesistency, which builds an Instagram-style application and carries it through physical-device testing, legal pages and error monitoring: the less glamorous work between a promising demo and an app ready for release.

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The videos drawing views on freeCodeCamp.org right now

n8n Full Course – Architect Scalable AI Automations from Scratch130,509 views · 2026-10-09 TanStack Router Course – Loaders, Auth & Type-Safe Routes65,248 views · 2026-10-08 Build your own Mobile App with Codex GPT-6 Astra - Full iOS and Andro…249,222 views

The numbers

Here is freeCodeCamp.org's week in views, subscribers and uploads.

views gained this week: this channel and similar channels

The Infographics Show

10,835,620

freeCodeCamp.org

3,621,735

CrashCourse

3,015,862

Xiaomanyc 小马在纽约

2,905,003

3Blue1Brown

2,151,287

Learn English With TV Ser…

1,443,330

RealLifeLore

1,373,198

Johnny Harris

0

subscribers

11,900,000

no significant change in the last 7 days

total views

1,022,803,440

views per day

879,431

typical day: 451,486

first-day views of each video posted this week

Design Software Systems Like a Senior E…

148,643

n8n Full Course – Architect Scalable AI…

75,972

TanStack Router Course – Loaders, Auth …

41,756

subscribers: this channel and similar channels

CrashCourse

17,200,000

The Infographics Show

15,500,000

Learn English With TV Ser…

12,100,000

freeCodeCamp.org

11,900,000

Learn English with Englis…

8,730,000

3Blue1Brown

8,700,000

Johnny Harris

7,980,000

RealLifeLore

7,940,000

Xiaomanyc 小马在纽约

7,120,000

As of October 15, 2026 · Data source: Trari Social News, Trari Traffic Trends and Ranking Platform, Google YouTube

Subscriber, view, like and comment counts are YouTube's. Rates, usual days, rankings, comparisons and categories are Trari's own calculations.