Скачать или смотреть Tinyurl System Design

Video Description:

🚀 System Design: How to Design TinyURL at Scale

In this video, we dive deep into a classic system design interview question: building a URL shortening service like TinyURL or Bitly. We move beyond basic functionality to explore how to handle billions of requests with ultra-low latency.

What you will learn:

The Math of Base62: Why using characters 0-9, a-z, and A-Z is critical to generating 3.5 trillion unique combinations, ensuring our system lasts for over 100 years.

The Storage Dilemma: Why we choose NoSQL for mapping storage to ensure massive scalability, while keeping a SQL database for our Key Generation Service (KGS) to leverage ACID properties.

Preventing Collisions: How the KGS pre-populates keys and uses atomic transactions to ensure no two users ever get the same short link.

Caching for Speed: Using Redis with an LRU (Least Recently Used) eviction policy to handle 30,000+ reads per second and keep redirects lightning fast.

Lifecycle & Cleanup: How an asynchronous service periodically sweeps expired links to recycle keys and save storage.

Technical Highlights:

Functional Requirements: Shortening, redirection, and custom expiration dates.

Non-Functional Requirements: High availability, minimal latency, and fault tolerance.

301 vs. 302 Redirects: Choosing between browser-side caching for speed or server-side tracking for analytics.

💡 Community Question: If you were designing this, would you prioritize pure speed (301 redirect) or detailed user analytics (302 redirect)? Let me know in the comments!

#SystemDesign #TinyURL #Backend #SoftwareEngineering #Scalability #NoSQL #Redis #CodingInterview