migrating repo from old host server

backend/README.md

@@ -0,0 +1,45 @@
+Backend startup quickstart:
+
+----------------------------->  BEST
+## 1. brew services start postgresql@15
+
+          OR 
+
+      /opt/homebrew/opt/postgresql@15/bin/pg_ctl -D /opt/homebrew/var/postgresql@15 start
+
+## 2.   ALLIN ONE: 
+        Make dev-all — Runs both the API and poller concurrently.
+----------------------------->  BEST
+
+          - OR - 
+          
+           
+## 3.  Option 1: Single command (both API + poller)
+       cd /Users/kjannette/workspace/koin_ping_0.2.0/backendmake dev-all
+
+## 4.   Option 2: Two separate terminals
+        Terminal 1 (API server):
+        cd /Users/kjannette/workspace/koin_ping_0.2.0/backend go run ./cmd/api
+        
+        make run — Builds and runs the API server.
+        make dev — Runs the API server with auto-reload via air (falls back to go run if air isn't installed).
+
+## 5.   Terminal 2 (Poller):
+        cd /Users/kjannette/workspace/koin_ping_0.2.0/backend 
+        go run ./cmd/poller
+
+        make poller — Builds and runs the poller.
+        make poller-dev — Runs the poller with auto-reload.
+
+## Production: `make build` + restart service
+
+On the server, from this directory:
+
+- **`make build`** — writes fresh **`bin/api`** and **`bin/poller`** (see the Makefile).
+- **`make build-api`** — API only; **`make build-poller`** — poller only.
+
+Building alone does **not** reload a process that is already listening (e.g. on port 8080). After deploy:
+
+1. Ensure **`systemctl`** (or your supervisor) **`ExecStart`** runs the binary you just built (e.g. **`.../backend/bin/api`**) or copy `bin/api` to that path.
+2. **`sudo systemctl restart <your-api-service>`** (and the poller service if you rebuilt it).
+3. Optional check: **`readlink -f /proc/<pid>/exe`** should show your **`bin/api`** path without **`(deleted)`** — if you see `(deleted)`, an old process is still running the previous binary from memory.