Fix: UI not refreshing after ZFS pool operations due to caching

internal/httpapp/api_handlers.go

@@ -1,6 +1,8 @@
 package httpapp
 
 import (
+	"crypto/sha256"
+	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"log"
@@ -76,6 +78,12 @@ func (a *App) handleCreatePool(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Invalidate cache for GET /api/v1/pools
+	keyToInvalidate := "GET:/api/v1/pools"
+	hash := sha256.Sum256([]byte(keyToInvalidate))
+	cacheKey := hex.EncodeToString(hash[:])
+	a.cache.Invalidate(cacheKey)
+
 	pool, err := a.zfs.GetPool(req.Name)
 	if err != nil {
 		writeJSON(w, http.StatusCreated, map[string]string{"message": "pool created", "name": req.Name})
@@ -114,6 +122,12 @@ func (a *App) handleDeletePool(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Invalidate cache for GET /api/v1/pools
+	keyToInvalidate := "GET:/api/v1/pools"
+	hash := sha256.Sum256([]byte(keyToInvalidate))
+	cacheKey := hex.EncodeToString(hash[:])
+	a.cache.Invalidate(cacheKey)
+
 	writeJSON(w, http.StatusOK, map[string]string{"message": "pool destroyed", "name": name})
 }