Programmer Polyglot

Spotify System Design

2026年4月13日

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In our penultimate episode, we take on the "Final Boss" of system design. How do you serve high-definition video or lossless audio to 200+ million concurrent users across the globe without the dreaded buffering wheel?

We break down the architectural requirements for a world-class streaming platform:

The Content Ingestion Pipeline: How raw files are transcoded into hundreds of different formats and bitrates for every possible device.
The Global Edge (Open Connect/CDNs): Why moving the data closer to the user is the only way to beat the speed of light.
Data Modeling for Discovery: Designing a DB schema that handles millions of tracks/movies while powering real-time "Continue Watching" and personalized recommendations.
Scaling for High Availability: Implementing microservices that can fail independently without taking down the entire player.

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Security in System Design

2026年4月7日

In a world where cyber threats are constantly evolving, building a scalable system is not enough—it must also be secure by design. In this episode, we break down the foundational pillars of system security, starting with Authentication & Authorization—how systems verify identity and enforce ac…

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Distributed Systems: Consistency, Consensus, and Chaos

2026年4月5日

In this episode, we explore the hardest problems engineers face when systems span multiple nodes, regions, and data centers. We begin with consistency models, from strong consistency to eventual consistency, and how they impact user experience and system guarantees.

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Advanced Caching & CDNs

2026年4月1日

Performance isn’t just about faster code—it’s about smarter data access. In this episode, we explore multi-layer caching, cache invalidation strategies, and how CDNs bring your application closer to users worldwide.

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Scaling Systems: From Single Node to Planet Scale

2026年4月4日

In this episode, we break down the core strategies behind scaling modern systems to handle massive traffic and unpredictable workloads. We start with the fundamentals vertical vs horizontal scaling and analyze when to scale up versus scale out, including trade-offs in cost, complexity, and fault to…

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Fault Tolerance & High Availability

2026年4月6日

What happens when your system fails at 2 AM? Do users notice—or does your architecture quietly recover? In this episode, we dive deep into the engineering principles behind fault-tolerant and highly available systems—the backbone of modern scalable applications. You’ll explore how top-tier systems…

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