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Why my Kubernetes cluster's IP ranges could break my home Wi-Fi 2 mintailscale
SagaOne Table, Three Continents 3 parts

Move the server next to your users and the database gets slower. Follow one table from three copies in one region to rows that each live near the person who writes them, then see why a brand-new key still crosses the ocean, and how to keep it home.

CockroachDB · multi-region · consensus · leaseholders · follower reads · REGIONAL BY ROW

The Server Moved, the Data Didn’t 10 panelspart I Every Row Has a Home 12 panelspart II Where the Ocean Comes Back 10 panelspart III
A follower count is not a multiplier 5 minrelevance Why rank_feature is faster than an integer 5 minsearch internals Zero errors isn't an explanation 7 minobservability
SagaYou Never Look at Everything 3 parts

A post becomes a point in space. The points wire themselves into a layered graph, one insert at a time — nobody lays it out. Then a search walks that graph to an answer that shares none of its words.

Vector search · embeddings · HNSW · approximate nearest neighbour · OpenSearch k-NN

Your Post Becomes a Point 10 panelspart I The Index Builds Itself 17 panelspart II Dog Playing in Winter 8 panelspart III
SagaNothing Stays Where You Put It 3 parts

Zoom into a stick of RAM until a single bit fills the frame, then take two detours to find out where your program actually lives and what stands between every address you use and every byte you get.

Zoom into RAM 8 panelspart I Where Does Your Program Live? 6 panelspart II What Is a Page? 11 panelspart III
SSH into your Mac, but only from home 7 minmacos The 4% rule: picking app background colors that survive cheap phone screens 6 mindisplays You can't move a terminal, so move the session 7 minclaude code Every Claude Code Session in One List 2 minclaude code Snapshot Your Terminal, Restore It After a Crash 3 minclaude code Ping me only when Claude has a question 7 minclaude code The Tale of the UUID 12 panelspanels Database Rate Limiting: The Missing Piece After a Circuit Breaker 3 minsystem design Bloom Filters, Explained Properly 5 mindata structures A Circuit Breaker Alone Won't Save Your Database 2 minresilience The Real GPU Tax of a Scaled Resolution 6 minmacos Why Redis Doesn't Implement "True" LRU 4 mincaching One brain, two wallets: two Claude Code accounts on one machine 6 minclaude code Designing a system you can't debug 11 minobservability Glow, a markdown reader that fills your terminal 3 minterminal The database is a folder 3 minarchitecture Every article draws its own line 13 mindesign Hello, world — why this site exists 1 minmeta