Caching

src/app/applications/page.tsx

@@ -20,9 +20,10 @@ import { useAsyncInterval } from "@/hooks/use-async";
 
 export default function ApplicationsPage() {
   const { value: apps, setValue: setApps } = useAsyncInterval(
+    "apps",
     [],
     getApps,
-    3000
+    3000,
   );
 
   const remove = async (appId: string) => {

src/app/deployments/page.tsx

@@ -25,9 +25,14 @@ const statusDot = {
 } as const;
 
 export default function DeploymentsPage() {
-  const { value: apps } = useAsyncInterval([], getApps, 5000);
+  const { value: apps } = useAsyncInterval("apps", [], getApps, 5000);
 
-  const { value: deployments, loading } = useAsync([], getDeployments, [apps]);
+  const { value: deployments, loading } = useAsync(
+    "deployments",
+    [],
+    getDeployments,
+    [apps],
+  );
 
   const appNameByContainer = useMemo(() => {
     const map = new Map<string, string>();

src/app/environment/page.tsx

@@ -21,11 +21,16 @@ import { useAsync } from "@/hooks/use-async";
 export default function EnvironmentPage() {
   const [isSaving, setIsSaving] = useState(false);
   const [showSecrets, setShowSecrets] = useState<Record<string, boolean>>({});
-  const { value: envGroups, setValue: setEnvGroups } = useAsync({}, getEnv);
+  const { value: envGroups, setValue: setEnvGroups } = useAsync(
+    "env",
+    {},
+    getEnv,
+  );
   const { value: selectedApp, setValue: setSelectedApp } = useAsync(
+    "selectedApp",
     "",
     async () => Object.keys(envGroups)[0] || "",
-    [envGroups]
+    [envGroups],
   );
 
   const handleSave = async () => {

src/app/monitoring/page.tsx

@@ -31,10 +31,17 @@ export default function MonitoringPage() {
   const isMobile = useIsMobile();
 
   // Metrics polling every 30 seconds
-  const { value: metrics } = useAsyncInterval([], getMetrics, 30000, []);
+  const { value: metrics } = useAsyncInterval(
+    "metrics",
+    [],
+    getMetrics,
+    30000,
+    [],
+  );
 
   // Live nodes polling every 3 seconds
   const { value: liveData } = useAsyncInterval(
+    "liveNodes",
     { cpuUsage: 0, ramUsage: 0 },
     async () => {
       const nodes = await getLiveNodes();
@@ -44,11 +51,12 @@ export default function MonitoringPage() {
       };
     },
     3000,
-    []
+    [],
   );
 
   // Container stats
   const { value: containerStats } = useAsync(
+    "containerStats",
     [],
     async () => {
       const nodes = await getNodes();
@@ -61,18 +69,18 @@ export default function MonitoringPage() {
               const stats = await getContainerStats(c.Id);
               if (!stats) return undefined;
               return { ...stats, name: c.Names[0] };
-            })
-          )
+            }),
+          ),
         )
       ).filter((s): s is SimpleStats & { name: string } => s !== undefined);
     },
-    []
+    [],
   );
 
   const containerCPU = containerStats.reduce((acc, val) => acc + val.cpu, 0);
   const containerMemory = containerStats.reduce(
     (acc, val) => acc + val.memory,
-    0
+    0,
   );
 
   return (

src/app/nodes/page.tsx

@@ -35,14 +35,18 @@ function DiskUsage({ liveData }: NodeLiveData) {
 
 export default function NodesPage() {
   const { value: nodes, setValue: setNodes } = useAsyncInterval(
+    "liveNodes",
     [],
     getLiveNodes,
-    3000
+    3000,
   );
 
-  const { value: dockerNodes } = useAsync([], async () => getDocker(nodes), [
-    nodes,
-  ]);
+  const { value: dockerNodes } = useAsync(
+    "docker",
+    [],
+    async () => getDocker(nodes),
+    [nodes],
+  );
 
   return (
     <DashboardLayout title="Nodes" subtitle="Cluster node management">

src/app/overview/page.tsx

@@ -17,12 +17,21 @@ import { getDeployments } from "@/lib/dockship/deploy";
 import { useAsync, useAsyncInterval } from "@/hooks/use-async";
 
 export default function OverviewPage() {
-  const { value: nodes } = useAsyncInterval([], getLiveNodes, 3000);
-  const { value: dockerNodes } = useAsync([], async () => getDocker(nodes), [
-    nodes,
-  ]);
-  const { value: apps } = useAsyncInterval([], getApps, 3000);
+  const { value: nodes } = useAsyncInterval(
+    "liveNodes",
+    [],
+    getLiveNodes,
+    3000,
+  );
+  const { value: dockerNodes } = useAsync(
+    "docker",
+    [],
+    async () => getDocker(nodes),
+    [nodes],
+  );
+  const { value: apps } = useAsyncInterval("apps", [], getApps, 3000);
   const { value: deployments } = useAsyncInterval(
+    "deployments",
     [],
     async () => (await getDeployments()).filter((d) => d !== null),
     3000,

src/components/dialogs/DeployApp.tsx

@@ -28,8 +28,8 @@ export default function DeployAppDialog({
   defaultApp?: string;
   children: ReactNode;
 }) {
-  const { value: nodes } = useAsync([], getLiveNodes);
-  const { value: apps } = useAsync<Application[]>([], getApps);
+  const { value: nodes } = useAsync("liveNodes", [], getLiveNodes);
+  const { value: apps } = useAsync<Application[]>("apps", [], getApps);
   const [name, setName] = useState("");
   const [app, setApp] = useState(defaultApp || "");
   const [node, setNode] = useState("");

src/components/dialogs/RegisterApp.tsx

@@ -13,10 +13,7 @@ import {
 } from "@/components/ui/dialog";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
-import { getLiveNodes } from "@/lib/dockship/node";
-import { Combobox } from "../ui/combobox";
 import { registerApp } from "@/lib/dockship/application";
-import { useAsync } from "@/hooks/use-async";
 
 export default function RegisterAppDialog({
   children,

src/hooks/use-async.ts

@@ -1,20 +1,31 @@
 import { useState, useEffect } from "react";
 
 export function useAsync<T>(
+  cacheKey: string,
   defaultValue: T,
   asyncFunction: () => Promise<T>,
-  dependencies: any[] = []
+  dependencies: any[] = [],
 ) {
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<null | Error>(null);
-  const [value, setValue] = useState<T>(defaultValue);
+  const [value, setValue] = useState<T>(() => {
+    try {
+      const cached = localStorage.getItem(cacheKey);
+      return cached ? (JSON.parse(cached) as T) : defaultValue;
+    } catch {
+      return defaultValue;
+    }
+  });
 
   useEffect(() => {
     let isMounted = true;
     setLoading(true);
+
     asyncFunction()
       .then((result) => {
-        if (isMounted) setValue(result);
+        if (!isMounted) return;
+        setValue(result);
+        localStorage.setItem(cacheKey, JSON.stringify(result));
       })
       .catch((err) => {
         if (isMounted) setError(err);
@@ -32,35 +43,42 @@ export function useAsync<T>(
 }
 
 export function useAsyncInterval<T>(
+  cacheKey: string,
   defaultValue: T,
   asyncFunction: () => Promise<T>,
   interval: number,
-  dependencies: any[] = []
+  dependencies: any[] = [],
 ) {
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<null | Error>(null);
-  const [value, setValue] = useState<T>(defaultValue);
+  const [value, setValue] = useState<T>(() => {
+    try {
+      const cached = localStorage.getItem(cacheKey);
+      return cached ? (JSON.parse(cached) as T) : defaultValue;
+    } catch {
+      return defaultValue;
+    }
+  });
 
   useEffect(() => {
     let isMounted = true;
 
-    const run = () => {
+    const run = async () => {
       setLoading(true);
-      asyncFunction()
-        .then((result) => {
-          if (isMounted) setValue(result);
-        })
-        .catch((err) => {
-          if (isMounted) setError(err);
-        })
-        .finally(() => {
+      try {
+        const result = await asyncFunction();
+        if (!isMounted) return;
+        setValue(result);
+        localStorage.setItem(cacheKey, JSON.stringify(result));
+      } catch (err) {
+        if (isMounted) setError(err as Error);
+      } finally {
         if (isMounted) setLoading(false);
-        });
+      }
     };
 
-    const iid = setInterval(run, interval);
-
     run();
+    const iid = setInterval(run, interval);
 
     return () => {
       isMounted = false;