diff --git a/C4IT_DataHistoryProvider_Base/Publish/F4SD-Cockpit-Server.dll b/C4IT_DataHistoryProvider_Base/Publish/F4SD-Cockpit-Server.dll
index 909a9bd..00ed442 100644
Binary files a/C4IT_DataHistoryProvider_Base/Publish/F4SD-Cockpit-Server.dll and b/C4IT_DataHistoryProvider_Base/Publish/F4SD-Cockpit-Server.dll differ
diff --git a/F4SD-Cockpit-ServerCore/DataHistoryCollectorM42Wpm.cs b/F4SD-Cockpit-ServerCore/DataHistoryCollectorM42Wpm.cs
index 2901c91..4627dec 100644
--- a/F4SD-Cockpit-ServerCore/DataHistoryCollectorM42Wpm.cs
+++ b/F4SD-Cockpit-ServerCore/DataHistoryCollectorM42Wpm.cs
@@ -38,6 +38,7 @@ namespace C4IT.DataHistoryProvider
         private const string constUrlGetPickupValues = "m42Services/api/c4itf4sdwebapi/getpickup/{0}?group={1}";
         private const string constUrlGetRoleMeberships = "m42services/api/c4itf4sdwebapi/getrolememberships/?sid={0}";
         private const string constUrlGetTicketOverviewCounts = "m42Services/api/c4itf4sdwebapi/getticketoverviewcounts?sid={0}&scope={1}&keys={2}";
+        private const string constUrlGetTicketOverviewCountsByRoles = "m42Services/api/c4itf4sdwebapi/getticketoverviewcountsbyroles";
         private const string constUrlGetTicketOverviewRelations = "m42Services/api/c4itf4sdwebapi/getticketoverviewrelations?sid={0}&scope={1}&key={2}&count={3}";
         private const string constUrlGetDataQueryRelationItems = "m42Services/api/dataquery/relationitems";
         private const string constUrlGetDataQueryRelationItemsCount = "m42Services/api/dataquery/relationitems/count";
@@ -66,11 +67,16 @@ namespace C4IT.DataHistoryProvider
 
         private readonly Timer onlineTimer = null;
 
-        private bool IsOnline = false;
-
-        private Dictionary<WebClientCacheIndex, WebClientCacheEntry> UserWebClientCache = new Dictionary<WebClientCacheIndex, WebClientCacheEntry>();
-
-        private readonly cDataHistoryCollector _collector;
+        private bool IsOnline = false;
+
+        private Dictionary<WebClientCacheIndex, WebClientCacheEntry> UserWebClientCache = new Dictionary<WebClientCacheIndex, WebClientCacheEntry>();
+
+        private readonly object _ticketOverviewCacheLock = new object();
+        private readonly Dictionary<string, TicketOverviewCountCacheEntry> _ticketOverviewPersonalCache = new Dictionary<string, TicketOverviewCountCacheEntry>(StringComparer.OrdinalIgnoreCase);
+        private readonly Dictionary<Guid, TicketOverviewCountCacheEntry> _ticketOverviewRoleCache = new Dictionary<Guid, TicketOverviewCountCacheEntry>();
+        private readonly Dictionary<string, TicketOverviewRoleListCacheEntry> _ticketOverviewRoleListCache = new Dictionary<string, TicketOverviewRoleListCacheEntry>(StringComparer.OrdinalIgnoreCase);
+
+        private readonly cDataHistoryCollector _collector;
 
         private static class _OnlineCheckCriticalSection
         {
@@ -88,12 +94,38 @@ namespace C4IT.DataHistoryProvider
             public string Language;
         }
 
-        private class WebClientCacheEntry
-        {
-            public cM42WebClient WebClient;
-            public DateTime LastUsed;
-            public DateTime ValidUntil;
-        }
+        private class WebClientCacheEntry
+        {
+            public cM42WebClient WebClient;
+            public DateTime LastUsed;
+            public DateTime ValidUntil;
+        }
+
+        private sealed class TicketOverviewCountCacheEntry
+        {
+            public Dictionary<string, int> Counts { get; set; } = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+            public DateTime ExpiresAtUtc { get; set; }
+        }
+
+        private sealed class TicketOverviewRoleListCacheEntry
+        {
+            public List<Guid> RoleIds { get; set; } = new List<Guid>();
+            public DateTime ExpiresAtUtc { get; set; }
+        }
+
+        private sealed class TicketOverviewCountsByRolesRequest
+        {
+            public string Sid { get; set; }
+            public List<Guid> RoleGuids { get; set; } = new List<Guid>();
+            public List<string> Keys { get; set; } = new List<string>();
+        }
+
+        private sealed class TicketOverviewCountsByRolesResponse
+        {
+            [JsonProperty("countsByRole")]
+            public Dictionary<string, Dictionary<string, int>> CountsByRole { get; set; }
+                = new Dictionary<string, Dictionary<string, int>>(StringComparer.OrdinalIgnoreCase);
+        }
 
         public class cM42ApiTokenModel
         {
@@ -601,34 +633,295 @@ namespace C4IT.DataHistoryProvider
             return null;
         }
 
-        public async Task<Dictionary<string, int>> GetTicketOverviewCountsAsync(IEnumerable<string> keys, bool useRoleScope, cF4sdWebRequestInfo requestInfo, int LogDeep, CancellationToken Token)
+        private TimeSpan GetTicketOverviewCacheDuration(bool useRoleScope)
+        {
+            var ticketConfig = Collector?.GetGlobalConfig()?.TicketConfiguration;
+            var minutes = useRoleScope
+                ? ticketConfig?.OverviewPollingRole ?? cF4sdTicketConfig.DefaultOverviewPollingRole
+                : ticketConfig?.OverviewPollingPersonal ?? cF4sdTicketConfig.DefaultOverviewPollingPersonal;
+
+            if (minutes < 1)
+                minutes = 1;
+
+            return TimeSpan.FromMinutes(minutes);
+        }
+
+        private bool TryGetTicketOverviewPersonalCache(string sid, DateTime now, out Dictionary<string, int> counts)
+        {
+            counts = null;
+            if (string.IsNullOrWhiteSpace(sid))
+                return false;
+
+            lock (_ticketOverviewCacheLock)
+            {
+                if (_ticketOverviewPersonalCache.TryGetValue(sid, out var entry))
+                {
+                    if (entry.ExpiresAtUtc > now)
+                    {
+                        counts = new Dictionary<string, int>(entry.Counts, StringComparer.OrdinalIgnoreCase);
+                        return true;
+                    }
+
+                    _ticketOverviewPersonalCache.Remove(sid);
+                }
+            }
+
+            return false;
+        }
+
+        private bool TryGetTicketOverviewRoleCache(Guid roleId, DateTime now, out Dictionary<string, int> counts)
+        {
+            counts = null;
+            if (roleId == Guid.Empty)
+                return false;
+
+            lock (_ticketOverviewCacheLock)
+            {
+                if (_ticketOverviewRoleCache.TryGetValue(roleId, out var entry))
+                {
+                    if (entry.ExpiresAtUtc > now)
+                    {
+                        counts = new Dictionary<string, int>(entry.Counts, StringComparer.OrdinalIgnoreCase);
+                        return true;
+                    }
+
+                    _ticketOverviewRoleCache.Remove(roleId);
+                }
+            }
+
+            return false;
+        }
+
+        private void SetTicketOverviewPersonalCache(string sid, Dictionary<string, int> counts, DateTime expiresAtUtc)
+        {
+            if (string.IsNullOrWhiteSpace(sid))
+                return;
+
+            lock (_ticketOverviewCacheLock)
+            {
+                _ticketOverviewPersonalCache[sid] = new TicketOverviewCountCacheEntry
+                {
+                    Counts = new Dictionary<string, int>(counts ?? new Dictionary<string, int>(), StringComparer.OrdinalIgnoreCase),
+                    ExpiresAtUtc = expiresAtUtc
+                };
+            }
+        }
+
+        private void SetTicketOverviewRoleCache(Guid roleId, Dictionary<string, int> counts, DateTime expiresAtUtc)
+        {
+            if (roleId == Guid.Empty)
+                return;
+
+            lock (_ticketOverviewCacheLock)
+            {
+                _ticketOverviewRoleCache[roleId] = new TicketOverviewCountCacheEntry
+                {
+                    Counts = new Dictionary<string, int>(counts ?? new Dictionary<string, int>(), StringComparer.OrdinalIgnoreCase),
+                    ExpiresAtUtc = expiresAtUtc
+                };
+            }
+        }
+
+        private bool TryGetTicketOverviewRoleIdsFromCache(string sid, DateTime now, out List<Guid> roleIds)
+        {
+            roleIds = null;
+            if (string.IsNullOrWhiteSpace(sid))
+                return false;
+
+            lock (_ticketOverviewCacheLock)
+            {
+                if (_ticketOverviewRoleListCache.TryGetValue(sid, out var entry))
+                {
+                    if (entry.ExpiresAtUtc > now)
+                    {
+                        roleIds = new List<Guid>(entry.RoleIds);
+                        return true;
+                    }
+
+                    _ticketOverviewRoleListCache.Remove(sid);
+                }
+            }
+
+            return false;
+        }
+
+        private void SetTicketOverviewRoleIdsCache(string sid, IEnumerable<Guid> roleIds, DateTime expiresAtUtc)
+        {
+            if (string.IsNullOrWhiteSpace(sid))
+                return;
+
+            var normalized = (roleIds ?? Enumerable.Empty<Guid>())
+                .Where(id => id != Guid.Empty)
+                .Distinct()
+                .ToList();
+
+            lock (_ticketOverviewCacheLock)
+            {
+                _ticketOverviewRoleListCache[sid] = new TicketOverviewRoleListCacheEntry
+                {
+                    RoleIds = normalized,
+                    ExpiresAtUtc = expiresAtUtc
+                };
+            }
+        }
+
+        private async Task<List<Guid>> GetTicketOverviewRoleIdsAsync(string sid, DateTime now, TimeSpan ttl, CancellationToken token)
+        {
+            if (TryGetTicketOverviewRoleIdsFromCache(sid, now, out var cached))
+                return cached;
+
+            var userInfo = await GetM42UserInfoAsync(sid, token);
+            var roles = userInfo?.Roles ?? new List<M42UserUserInfo.M42Role>();
+            var roleIds = roles
+                .Where(r => r != null && r.Id != Guid.Empty)
+                .Select(r => r.Id)
+                .Distinct()
+                .ToList();
+
+            SetTicketOverviewRoleIdsCache(sid, roleIds, now.Add(ttl));
+            return roleIds;
+        }
+
+        private async Task<Dictionary<Guid, Dictionary<string, int>>> FetchTicketOverviewCountsByRolesAsync(
+            IEnumerable<Guid> roleIds,
+            IReadOnlyCollection<string> requestedKeys,
+            cF4sdWebRequestInfo requestInfo,
+            int logDeep,
+            CancellationToken token)
         {
             MethodBase CM = null; if (cLogManager.DefaultLogger.IsDebug) { CM = MethodBase.GetCurrentMethod(); LogMethodBegin(CM); }
-            if (cPerformanceLogger.IsActive && requestInfo != null) { if (CM == null) CM = MethodBase.GetCurrentMethod(); cPerformanceLogger.LogPerformanceStart(LogDeep, CM, requestInfo.id, requestInfo.created); }
-            var _startTime = DateTime.UtcNow;
+            if (cPerformanceLogger.IsActive && requestInfo != null) { if (CM == null) CM = MethodBase.GetCurrentMethod(); cPerformanceLogger.LogPerformanceStart(logDeep, CM, requestInfo.id, requestInfo.created); }
+            var startTime = DateTime.UtcNow;
 
             try
             {
-                if (!await CheckOnline())
-                    return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
-
-                var sid = requestInfo?.userInfo?.AdSid;
-                if (string.IsNullOrWhiteSpace(sid))
-                    return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
-
-                var scope = useRoleScope ? "role" : "personal";
-                var normalizedKeys = (keys ?? Enumerable.Empty<string>())
-                    .Where(k => !string.IsNullOrWhiteSpace(k))
-                    .Distinct(StringComparer.OrdinalIgnoreCase)
+                var roleList = (roleIds ?? Enumerable.Empty<Guid>())
+                    .Where(id => id != Guid.Empty)
+                    .Distinct()
                     .ToList();
-                var keyParam = normalizedKeys.Count > 0
-                    ? HttpUtility.UrlEncode(string.Join(",", normalizedKeys))
-                    : string.Empty;
 
-                var url = string.Format(constUrlGetTicketOverviewCounts, HttpUtility.UrlEncode(sid), scope, keyParam);
-                var wc = await GetWebClient(requestInfo, Token);
-                var res = await wc.HttpEnh.GetAsync(url, Token);
-                if (Token.IsCancellationRequested)
+                if (roleList.Count == 0)
+                    return new Dictionary<Guid, Dictionary<string, int>>();
+
+                var request = new TicketOverviewCountsByRolesRequest
+                {
+                    Sid = requestInfo?.userInfo?.AdSid,
+                    RoleGuids = roleList,
+                    Keys = requestedKeys?.Where(k => !string.IsNullOrWhiteSpace(k)).ToList() ?? new List<string>()
+                };
+
+                var jsonBody = JsonConvert.SerializeObject(request, Formatting.None,
+                    new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
+                var content = new StringContent(jsonBody, Encoding.UTF8, "application/json");
+
+                var wc = await GetWebClient(requestInfo, token);
+                var res = await wc.HttpEnh.PostAsync(constUrlGetTicketOverviewCountsByRoles, content, token);
+                if (token.IsCancellationRequested)
+                    return new Dictionary<Guid, Dictionary<string, int>>();
+
+                if (res?.IsSuccessStatusCode == true)
+                {
+                    var json = await res.Content.ReadAsStringAsync();
+                    if (!string.IsNullOrWhiteSpace(json))
+                    {
+                        var response = JsonConvert.DeserializeObject<TicketOverviewCountsByRolesResponse>(json);
+                        if (response?.CountsByRole != null)
+                        {
+                            var result = new Dictionary<Guid, Dictionary<string, int>>();
+                            foreach (var entry in response.CountsByRole)
+                            {
+                                if (!Guid.TryParse(entry.Key, out var roleId) || roleId == Guid.Empty)
+                                    continue;
+
+                                var counts = entry.Value ?? new Dictionary<string, int>();
+                                result[roleId] = new Dictionary<string, int>(counts, StringComparer.OrdinalIgnoreCase);
+                            }
+                            return result;
+                        }
+                    }
+                }
+
+                StartOnlineValidation();
+            }
+            catch (Exception E)
+            {
+                LogException(E);
+            }
+            finally
+            {
+                if (cPerformanceLogger.IsActive && requestInfo != null) { cPerformanceLogger.LogPerformanceEnd(logDeep, CM, requestInfo.id, requestInfo.created, startTime); }
+                if (CM != null) LogMethodEnd(CM);
+            }
+
+            return new Dictionary<Guid, Dictionary<string, int>>();
+        }
+
+        private Dictionary<string, int> SumTicketOverviewCounts(IEnumerable<Dictionary<string, int>> sources)
+        {
+            var result = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+            if (sources == null)
+                return result;
+
+            foreach (var counts in sources)
+            {
+                if (counts == null)
+                    continue;
+
+                foreach (var kvp in counts)
+                {
+                    if (string.IsNullOrWhiteSpace(kvp.Key))
+                        continue;
+
+                    result[kvp.Key] = result.TryGetValue(kvp.Key, out var existing)
+                        ? existing + kvp.Value
+                        : kvp.Value;
+                }
+            }
+
+            return result;
+        }
+
+        private Dictionary<string, int> FilterTicketOverviewCounts(Dictionary<string, int> counts, IReadOnlyCollection<string> requestedKeys)
+        {
+            if (counts == null)
+                return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+
+            if (requestedKeys == null || requestedKeys.Count == 0)
+                return new Dictionary<string, int>(counts, StringComparer.OrdinalIgnoreCase);
+
+            var filtered = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+            foreach (var key in requestedKeys)
+            {
+                if (string.IsNullOrWhiteSpace(key))
+                    continue;
+
+                filtered[key] = counts.TryGetValue(key, out var value) ? value : 0;
+            }
+
+            return filtered;
+        }
+
+        private async Task<Dictionary<string, int>> FetchTicketOverviewCountsAsync(
+            string sid,
+            string scope,
+            IReadOnlyCollection<string> requestedKeys,
+            cF4sdWebRequestInfo requestInfo,
+            CancellationToken token)
+        {
+            try
+            {
+                var keyParam = requestedKeys != null && requestedKeys.Count > 0
+                    ? HttpUtility.UrlEncode(string.Join(",", requestedKeys))
+                    : null;
+
+                var url = string.Format(constUrlGetTicketOverviewCounts, HttpUtility.UrlEncode(sid), scope, keyParam ?? string.Empty);
+                if (string.IsNullOrWhiteSpace(keyParam))
+                {
+                    url = $"m42Services/api/c4itf4sdwebapi/getticketoverviewcounts?sid={HttpUtility.UrlEncode(sid)}&scope={scope}";
+                }
+                var wc = await GetWebClient(requestInfo, token);
+                var res = await wc.HttpEnh.GetAsync(url, token);
+                if (token.IsCancellationRequested)
                     return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
 
                 if (res?.IsSuccessStatusCode == true)
@@ -661,6 +954,86 @@ namespace C4IT.DataHistoryProvider
             {
                 LogException(E);
             }
+
+            return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+        }
+
+        public async Task<Dictionary<string, int>> GetTicketOverviewCountsAsync(IEnumerable<string> keys, bool useRoleScope, cF4sdWebRequestInfo requestInfo, int LogDeep, CancellationToken Token)
+        {
+            MethodBase CM = null; if (cLogManager.DefaultLogger.IsDebug) { CM = MethodBase.GetCurrentMethod(); LogMethodBegin(CM); }
+            if (cPerformanceLogger.IsActive && requestInfo != null) { if (CM == null) CM = MethodBase.GetCurrentMethod(); cPerformanceLogger.LogPerformanceStart(LogDeep, CM, requestInfo.id, requestInfo.created); }
+            var _startTime = DateTime.UtcNow;
+
+            try
+            {
+                if (!await CheckOnline())
+                    return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+
+                var sid = requestInfo?.userInfo?.AdSid;
+                if (string.IsNullOrWhiteSpace(sid))
+                    return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+
+                var normalizedKeys = (keys ?? Enumerable.Empty<string>())
+                    .Where(k => !string.IsNullOrWhiteSpace(k))
+                    .Distinct(StringComparer.OrdinalIgnoreCase)
+                    .ToList();
+                var now = DateTime.UtcNow;
+                var ttl = GetTicketOverviewCacheDuration(useRoleScope);
+
+                if (!useRoleScope)
+                {
+                    if (TryGetTicketOverviewPersonalCache(sid, now, out var cachedPersonal))
+                        return FilterTicketOverviewCounts(cachedPersonal, normalizedKeys);
+
+                    var counts = await FetchTicketOverviewCountsAsync(sid, "personal", normalizedKeys, requestInfo, Token);
+                    if (Token.IsCancellationRequested)
+                        return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+
+                    SetTicketOverviewPersonalCache(sid, counts, now.Add(ttl));
+                    return FilterTicketOverviewCounts(counts, normalizedKeys);
+                }
+
+                var roleIds = await GetTicketOverviewRoleIdsAsync(sid, now, ttl, Token);
+                if (roleIds == null || roleIds.Count == 0)
+                    return new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+
+                var countsByRole = new Dictionary<Guid, Dictionary<string, int>>();
+                var missingRoles = new List<Guid>();
+
+                foreach (var roleId in roleIds)
+                {
+                    if (TryGetTicketOverviewRoleCache(roleId, now, out var cachedRole))
+                    {
+                        countsByRole[roleId] = cachedRole;
+                    }
+                    else
+                    {
+                        missingRoles.Add(roleId);
+                    }
+                }
+
+                if (missingRoles.Count > 0)
+                {
+                    var fetched = await FetchTicketOverviewCountsByRolesAsync(missingRoles, normalizedKeys, requestInfo, LogDeep + 1, Token);
+                    var expiresAt = DateTime.UtcNow.Add(ttl);
+
+                    foreach (var roleId in missingRoles)
+                    {
+                        if (!fetched.TryGetValue(roleId, out var roleCounts))
+                            roleCounts = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+
+                        SetTicketOverviewRoleCache(roleId, roleCounts, expiresAt);
+                        countsByRole[roleId] = roleCounts;
+                    }
+                }
+
+                var summed = SumTicketOverviewCounts(countsByRole.Values);
+                return FilterTicketOverviewCounts(summed, normalizedKeys);
+            }
+            catch (Exception E)
+            {
+                LogException(E);
+            }
             finally
             {
                 if (cPerformanceLogger.IsActive && requestInfo != null) { cPerformanceLogger.LogPerformanceEnd(LogDeep, CM, requestInfo.id, requestInfo.created, _startTime); }