feat: Optimize server availability checks with parallelized TCP connections and in-memory caching, and update Dashboard to handle paginated API responses for improved performance and user experience

frontend/src/Dashboard.jsx

@@ -80,11 +80,11 @@ function Dashboard() {
       try {
         // Загружаем данные с обработкой ошибок для каждого endpoint
         const results = await Promise.allSettled([
-          axios.get('/api/domains-new'),
-          axios.get('/api/ip-ranges'),
-          axios.get('/api/asns'),
+          axios.get('/api/domains-new', { params: { offset: 0, limit: 1 } }),
+          axios.get('/api/ip-ranges', { params: { offset: 0, limit: 1 } }),
+          axios.get('/api/asns', { params: { offset: 0, limit: 1 } }),
           axios.get('/api/servers'),
-          axios.get('/api/servers/availability'),
+          axios.get('/api/servers/availability', { params: { ttlSeconds: 60 } }),
           axios.get('/api/s3/last-modified')
         ]);
 
@@ -97,9 +97,15 @@ function Dashboard() {
         const s3Res = results[5];
 
         // Получаем данные серверов для подсчета дополнительной статистики
-        const domains = domainsRes.status === 'fulfilled' ? domainsRes.value.data : [];
-        const ipRanges = ipRangesRes.status === 'fulfilled' ? ipRangesRes.value.data : [];
-        const asns = asnsRes.status === 'fulfilled' ? asnsRes.value.data : [];
+        const domains = domainsRes.status === 'fulfilled'
+          ? (Array.isArray(domainsRes.value.data?.items) ? domainsRes.value.data.items : domainsRes.value.data)
+          : [];
+        const ipRanges = ipRangesRes.status === 'fulfilled'
+          ? (Array.isArray(ipRangesRes.value.data?.items) ? ipRangesRes.value.data.items : ipRangesRes.value.data)
+          : [];
+        const asns = asnsRes.status === 'fulfilled'
+          ? (Array.isArray(asnsRes.value.data?.items) ? asnsRes.value.data.items : asnsRes.value.data)
+          : [];
         const servers = serversRes.status === 'fulfilled' ? serversRes.value.data : [];
         setRaw({ domains, ipRanges, asns, servers });
         const countries = new Set(servers.map(server => server.country).filter(Boolean));
@@ -111,10 +117,20 @@ function Dashboard() {
           const lmRaw = s3Res.status === 'fulfilled' ? s3Res.value.data?.domainsNew?.lastModified : null;
           const lastModified = lmRaw ? new Date(lmRaw).toLocaleString() : new Date().toLocaleString();
 
+        const domainsCount = domainsRes.status === 'fulfilled' && typeof domainsRes.value.data?.total === 'number'
+          ? domainsRes.value.data.total
+          : domains.length;
+        const ipRangesCount = ipRangesRes.status === 'fulfilled' && typeof ipRangesRes.value.data?.total === 'number'
+          ? ipRangesRes.value.data.total
+          : ipRanges.length;
+        const asnsCount = asnsRes.status === 'fulfilled' && typeof asnsRes.value.data?.total === 'number'
+          ? asnsRes.value.data.total
+          : asns.length;
+
         setStats({
-          domainsCount: domains.length,
-          ipRangesCount: ipRanges.length,
-          asnsCount: asns.length,
+          domainsCount,
+          ipRangesCount,
+          asnsCount,
           serversCount: servers.length,
           lastModified,
           countriesCount: countries.size,