Learning Notes
Short notes on concepts I learn along the way. One question, one answer.
agents2 min
MCP vs CLI: Why the Comparison Makes No Sense
MCP is a protocol, CLI is a tool - they work together, not against each other
rag2 min
BM25 vs Vector Search
The difference between keyword search (BM25) and semantic search (vectors), and why you need both
rag2 min
Hybrid Search Explained
What hybrid search is, how the alpha parameter works, and when to adjust it
rag2 min
What Are Embedding Dimensions?
What dimensions mean in embedding vectors, whether more is better, and when it matters
rag2 min
Why Reranking Matters
What reranking does, how cross-encoders work, and why it dramatically improves RAG quality
security2 min
SHA-256: How It Works
What SHA-256 is, its key properties, and why we use it to track file changes