Скачать или смотреть Why Logout Doesn’t Actually Log Users Out

Logout feels like it ends a session — but in many modern systems, it doesn’t.

This video breaks down why logout is often **client-side only**, the core invariant behind stateless authentication, and the real tradeoffs systems make between security and scale. This is not a bug or a mistake — it’s a design decision that many teams make without fully realizing the consequences.

If you work on backend systems, authentication, or system design, this is one assumption worth challenging.

Timestamps

0:00 Logout doesn’t actually log users out
0:17 Why logout feels like it works
0:37 The core invariant behind stateless tokens
0:52 What “stateless” really means
1:11 Why engineers assume logout is enough
1:32 Where the assumption breaks
2:00 Stateless auth: revocation vs scale


📄 Abstract PDF (Detailed Write-up)

A detailed written version of this topic is available here:
Link: https://drive.google.com/file/d/1IzLQ...

The PDF expands on:

Stateless authentication tradeoffs
Why token revocation is hard
Real production implications
How this pattern appears across system design

🎯 Key Takeaway

Stateless authentication trades *immediate revocation* for **performance and scalability**.
That tradeoff can be reasonable — but only if it’s intentional.

Who This Is For

Backend engineers
System design learners
Developers working with auth, APIs, or distributed systems

This video assumes basic familiarity with web systems and focuses on **engineering judgment**, not tutorials.

More Like This

This tradeoff shows up across backend systems — retries, networking, caching, storage, and queues.
We’ll keep breaking these assumptions, one by one.

Peace Out !!