gostructor

etcd — live config with the watch API

Fills a struct from an etcd key prefix and hot-reloads it using etcd’s native watch stream (event-driven, no polling).

Run it

docker compose up -d     # etcd, seeded with config/orders/*
go run .

Change a key in another terminal:

docker compose exec etcd etcdctl put config/orders/host 10.0.0.9
docker compose exec etcd etcdctl put config/orders/level debug

The program reloads on each event:

✅ 10.0.0.5:5432  level=info
✅ 10.0.0.9:5432  level=info
✅ 10.0.0.9:5432  level=debug

Last-known-good

Good reads are written to ./snapshot; stop etcd and rerun to serve the last snapshot instead of failing:

docker compose stop etcd
go run .

Clean up

docker compose down
rm -rf snapshot

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