Tigrbl engine showcase

Touch one key. Evict another.

Run explicit WebSocket JSON-RPC operations against a three-item LRU cache, then prove two-client fanout.

Backend Start Command
uv run tigrcorn tigrbl_demo_lru_engine.app:app --config pkgs/tigrbl-demo-lru-engine-backend/tigrcorn.json
Endpoint: same-origin /ws/lru

LRU Eviction Proof Overview

This interactive lab connects two independent WebSocket clients (Alice and Bob) using the jsonrpc subprotocol. It executes a deterministic 8-step proof demonstrating that reading a key refreshes recency, inserting into a full 3-item cache evicts the least-recently-used key, and explicit publishing fans out to all subscribers.

Demo Boundaries: Process-local LRU cache; single process worker; contents reset on server restart; cache operations and publishing are separate non-atomic steps.