10 Ecto Query Patterns for N+1 and Beyond
The Iron Law for has_many vs belongs_to, plus when Dataloader, subqueries, or raw SQL are the honest fix, not another preload tutorial.
Writing · Tag
Posts tagged Phoenix
6 posts on Phoenix. Or browse the full writing index →
Posts tagged Phoenix
Isolating Parallel Claude Code Agents in Phoenix
Elixir/Phoenix mechanics for parallel Claude Code agents: templating PORT per worktree, one Postgres DB per branch, and asset-watcher collisions nobody covers.
12 Phoenix LiveView Patterns for Production
Twelve Phoenix LiveView patterns that hold up in production — streams vs assigns, async mounts, PubSub gating, and the failure mode behind each one.
Streaming LLM Tokens in LiveView, the 2026 Way
Token-by-token LLM streaming in Phoenix LiveView, no React — the 2026 async APIs, plus the production failure modes most tutorials skip.
Build an MCP Server in Phoenix With Hermes
An MCP server lets Claude and other agents call your Phoenix app directly. How to ship one with Hermes — auth, transport, and safe tool boundaries.
The Ruby to Elixir Migration That Cut Our Service Footprint From Ten to Six
We started with ten Ruby and Elixir services serving real-time messaging for 450K students across 900+ universities. Two years later we had six, fully Elixir, and on-call alerts had halved. The migration order, the patterns we leaned on, and what I'd do differently today.