# clearly explained (podcasts) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover clearly explained. Page: Feed: --- ## [REST API Authentication Methods Clearly Explained](https://blog.levelupcoding.com/p/rest-api-authentication-methods) _2026-08-05 · Nikki Siapno · Level Up Coding System Design Newsletter_ 8 API authentication methods every developer should know. ## [What OpenAI’s Data Agent Teaches Us About Building Reliable AI Agents](https://blog.levelupcoding.com/p/how-openai-built-its-data-agent) _2026-08-02 · Nikki Siapno · Level Up Coding System Design Newsletter_ How OpenAI built its data agent to work across 70,000 datasets. ## [Vector Databases Clearly Explained](https://blog.levelupcoding.com/p/vector-databases-clearly-explained) _2026-07-25 · Nikki Siapno · Level Up Coding System Design Newsletter_ The mental model that makes vector databases click. ## [What Netflix Live Teaches Us About Building Reliable Systems](https://blog.levelupcoding.com/p/netflix-case-study-how-netflix-streams-live-events-without-crashing) _2026-07-18 · Nikki Siapno · Level Up Coding System Design Newsletter_ How does Netflix stream live events without crashing? ## [RAG Clearly Explained](https://blog.levelupcoding.com/p/rag-clearly-explained) _2026-07-15 · Nikki Siapno · Level Up Coding System Design Newsletter_ The mental model every engineer should have. ## [How Discord Fans Out One Message to a Million Users](https://blog.levelupcoding.com/p/discord-case-study-one-message-million-users) _2026-07-07 · Nikki Siapno · Level Up Coding System Design Newsletter_ A case study in fanout, bottlenecks, and the engineering decisions behind Discord's scale. ## [LLMs: The Essential Guide](https://blog.levelupcoding.com/p/llms-the-essential-guide) _2026-06-26 · Nikki Siapno · Level Up Coding System Design Newsletter_ Most engineers only see the API layer. Here's what's happening underneath. ## [MCP Clearly Explained](https://blog.levelupcoding.com/p/mcp-clearly-explained) _2026-06-15 · Nikki Siapno · Level Up Coding System Design Newsletter_ Plus: Big upgrades are coming to LUC. Vote on what you'd like to see first. ## [REST vs GraphQL vs gRPC](https://blog.levelupcoding.com/p/rest-vs-graphql-vs-grpc) _2026-05-28 · Nikki Siapno · Level Up Coding System Design Newsletter_ The tradeoffs behind resource-driven, query-driven, and method-driven APIs. ## [Service Discovery in Distributed Systems Clearly Explained](https://blog.levelupcoding.com/p/service-discovery-in-distributed-systems) _2026-05-13 · Nikki Siapno · Level Up Coding System Design Newsletter_ How modern systems dynamically locate healthy services as infrastructure constantly changes. ## [Watch chovy live code (Sponsored)](https://crawlproof.com/a/yWSs8btNbDEi) _2026-05-13 · **Sponsored**_ Join Mosh Coding streams with collaborative screen sharing and remote control, open source. ## [Docker vs Kubernetes](https://blog.levelupcoding.com/p/docker-vs-kubernetes) _2026-05-11 · Nikki Siapno · Level Up Coding System Design Newsletter_ (4 min read) | The real difference that actually matters, how to decide, where teams go wrong, and more... ## [OAuth Clearly Explained](https://blog.levelupcoding.com/p/oauth-clearly-explained) _2026-05-01 · Nikki Siapno · Level Up Coding System Design Newsletter_ (4 min read) | OAuth flow, three different tokens, three different jobs, what OAuth actually solves, where OAuth systems usually break, and more ## [Infrastructure as Code Clearly Explained](https://blog.levelupcoding.com/p/infrastructure-as-code-clearly-explained) _2026-04-27 · Nikki Siapno · Level Up Coding System Design Newsletter_ The IaC workflow that actually works, why it matters in practice, security risks you can't ignore, and more... ## [Redis Clearly Explained](https://blog.levelupcoding.com/p/redis-clearly-explained) _2026-04-21 · Nikki Siapno · Level Up Coding System Design Newsletter_ How Redis works under the hood, where it fits in the stack, where it shines, and when NOT to use it. ## [Database Indexing Clearly Explained](https://blog.levelupcoding.com/p/database-indexing-clearly-explained) _2026-04-13 · Nikki Siapno · Level Up Coding System Design Newsletter_ (4 minutes) | What indexes really do, index types, how the optimizer decides, when they help (and when they hurt), and the right mental model ## [Circuit Breakers: How to Stop Small Failures from Spreading](https://blog.levelupcoding.com/p/circuit-breakers-explained) _2026-04-09 · Nikki Siapno · Level Up Coding System Design Newsletter_ (4 Minutes) | What they are, what triggers a trip, why they help so much, observability, and when to use them (and when not to) ## [REST APIs Properly Explained](https://blog.levelupcoding.com/p/rest-apis-properly-explained) _2026-03-31 · Nikki Siapno · Level Up Coding System Design Newsletter_ (4 minutes) | Constraints, trade-offs, when not to use it, and more ## [How SSO Actually Works](https://blog.levelupcoding.com/p/sso-explained) _2026-03-28 · Nikki Siapno · Level Up Coding System Design Newsletter_ (5 minutes) | What actually happens when you click “Sign in with Google” ## [Hashing vs Encryption vs Tokenization](https://blog.levelupcoding.com/p/hashing-vs-encryption-vs-tokenization) _2026-03-24 · Nikki Siapno · Level Up Coding System Design Newsletter_ (5 minutes) | One question decides which one you should use... ## [Reach prospects with real signals (Sponsored)](https://crawlproof.com/a/evNOKorGHuc9) _2026-03-24 · **Sponsored**_ Find prospects talking about your problem and get context-backed moments to engage ## [Sync vs Async Clearly Explained](https://blog.levelupcoding.com/p/sync-vs-async-communication) _2026-03-21 · Nikki Siapno · Level Up Coding System Design Newsletter_ (5 minutes) | One design choice determines if your system blocks or flows.