Cache agent metrics for polling

app/Services/Agent/AgentClient.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace App\Services\Agent;
 
 use Exception;
+use Illuminate\Support\Facades\Cache;
 
 class AgentClient
 {
@@ -66,6 +67,20 @@ class AgentClient
         return $decoded;
     }
 
+    /**
+     * Cache lightweight metrics to reduce socket churn on polling pages.
+     */
+    private function cachedMetrics(string $key, int $seconds, callable $callback): array
+    {
+        if ($seconds <= 0) {
+            return $callback();
+        }
+
+        return Cache::remember($key, now()->addSeconds($seconds), function () use ($callback): array {
+            return $callback();
+        });
+    }
+
     /**
      * Recursively sanitize array values to ensure they are JSON-safe.
      * Removes control characters (except newlines/tabs) from strings.
@@ -1089,7 +1104,7 @@ class AgentClient
      */
     public function metricsOverview(): array
     {
-        return $this->send('metrics.overview', []);
+        return $this->cachedMetrics('agent.metrics.overview', 5, fn (): array => $this->send('metrics.overview', []));
     }
 
     /**
@@ -1097,7 +1112,7 @@ class AgentClient
      */
     public function metricsCpu(): array
     {
-        return $this->send('metrics.cpu', []);
+        return $this->cachedMetrics('agent.metrics.cpu', 5, fn (): array => $this->send('metrics.cpu', []));
     }
 
     /**
@@ -1105,7 +1120,7 @@ class AgentClient
      */
     public function metricsMemory(): array
     {
-        return $this->send('metrics.memory', []);
+        return $this->cachedMetrics('agent.metrics.memory', 5, fn (): array => $this->send('metrics.memory', []));
     }
 
     /**
@@ -1113,7 +1128,7 @@ class AgentClient
      */
     public function metricsDisk(): array
     {
-        return $this->send('metrics.disk', []);
+        return $this->cachedMetrics('agent.metrics.disk', 10, fn (): array => $this->send('metrics.disk', []));
     }
 
     /**
@@ -1121,7 +1136,7 @@ class AgentClient
      */
     public function metricsNetwork(): array
     {
-        return $this->send('metrics.network', []);
+        return $this->cachedMetrics('agent.metrics.network', 5, fn (): array => $this->send('metrics.network', []));
     }
 
     /**