diff --git a/AsbCloudInfrastructure/MemoryCacheExtentions.cs b/AsbCloudInfrastructure/MemoryCacheExtentions.cs
index f227781f..eb4a591a 100644
--- a/AsbCloudInfrastructure/MemoryCacheExtentions.cs
+++ b/AsbCloudInfrastructure/MemoryCacheExtentions.cs
@@ -1,5 +1,4 @@
-using AsbCloudDb.Model;
-using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Caching.Memory;
 using System;
 using System.Collections.Generic;
@@ -24,7 +23,6 @@ namespace AsbCloudInfrastructure
         /// <param name="token"></param>
         /// <returns></returns>
         public static Task<IEnumerable<T>> GetOrCreateBasicAsync<T>(this IMemoryCache memoryCache, IQueryable<T> query, CancellationToken token)
-            where T : class
         {
             var getter = async (CancellationToken token) =>
             {
@@ -35,19 +33,6 @@ namespace AsbCloudInfrastructure
             return memoryCache.GetOrCreateBasicAsync(getter, token);
         }
 
-        [Obsolete(message: "use GetOrCreateBasicAsync<T>(this IMemoryCache memoryCache, IQueryable<T> query, CancellationToken token)")]
-        public static Task<IEnumerable<T>> GetOrCreateBasicAsync<T>(this IMemoryCache memoryCache, IAsbCloudDbContext dbContext, CancellationToken token)
-            where T : class
-        {
-            var getter = async (CancellationToken token) =>
-            {
-                var entities = await dbContext.Set<T>()
-                    .ToArrayAsync(token);
-                return entities.AsEnumerable();
-            };
-            return memoryCache.GetOrCreateBasicAsync(getter, token);
-        }
-
         /// <summary>
         /// Создать кеш на основе результата выполнения произвольной асинхронной функции.
         /// Ключ кеша - полное имя типа T.
@@ -58,7 +43,6 @@ namespace AsbCloudInfrastructure
         /// <param name="token"></param>
         /// <returns></returns>
         public static Task<IEnumerable<T>> GetOrCreateBasicAsync<T>(this IMemoryCache memoryCache, Func<CancellationToken, Task<IEnumerable<T>>> getterAsync, CancellationToken token)
-            where T : class
         {
             var key = typeof(T).FullName;
             var cache = memoryCache.GetOrCreateAsync(key, async (cacheEntry) => {
@@ -79,20 +63,11 @@ namespace AsbCloudInfrastructure
         /// <param name="query"></param>
         /// <returns></returns>
         public static IEnumerable<T> GetOrCreateBasic<T>(this IMemoryCache memoryCache, IQueryable<T> query)
-            where T : class
         {
             var getter = () => query.ToArray();
             return memoryCache.GetOrCreateBasic(getter);
         }
 
-        [Obsolete(message: "use GetOrCreateBasic<T>(this IMemoryCache memoryCache, IQueryable<T> query)")]
-        public static IEnumerable<T> GetOrCreateBasic<T>(this IMemoryCache memoryCache, IAsbCloudDbContext dbContext)
-            where T : class
-        {
-            var getter = () => dbContext.Set<T>().ToArray();
-            return memoryCache.GetOrCreateBasic(getter);
-        }
-
         /// <summary>
         /// Создать кеш на основе результата выполнения произвольной функции.
         /// Ключ кеша - полное имя типа T.
@@ -102,7 +77,6 @@ namespace AsbCloudInfrastructure
         /// <param name="getter"></param>
         /// <returns></returns>
         public static IEnumerable<T> GetOrCreateBasic<T>(this IMemoryCache memoryCache, Func<IEnumerable<T>> getter)
-            where T : class
         {
             var key = typeof(T).FullName;
             var cache = memoryCache.GetOrCreate(key, cacheEntry => {
diff --git a/AsbCloudInfrastructure/Repository/WellOperationRepository.cs b/AsbCloudInfrastructure/Repository/WellOperationRepository.cs
index db45b357..1b5f3406 100644
--- a/AsbCloudInfrastructure/Repository/WellOperationRepository.cs
+++ b/AsbCloudInfrastructure/Repository/WellOperationRepository.cs
@@ -37,7 +37,7 @@ namespace AsbCloudInfrastructure.Repository
         public IEnumerable<WellOperationCategoryDto> GetCategories(bool includeParents)
         {
             var categories = memoryCache
-                .GetOrCreateBasic<WellOperationCategory>(db);
+                .GetOrCreateBasic(db.Set<WellOperationCategory>());
 
             if (!includeParents)
             {
@@ -60,7 +60,7 @@ namespace AsbCloudInfrastructure.Repository
         /// <inheritdoc/>
         public IDictionary<int, string> GetSectionTypes()
             => memoryCache
-            .GetOrCreateBasic<WellSectionType>(db)
+            .GetOrCreateBasic(db.Set<WellSectionType>())
             .ToDictionary(s => s.Id, s => s.Caption);
 
         public async Task<IEnumerable<WellOperationDto>> GetOperationsPlanAsync(int idWell, CancellationToken token)
diff --git a/AsbCloudInfrastructure/Services/SAUB/TelemetryService.cs b/AsbCloudInfrastructure/Services/SAUB/TelemetryService.cs
index fd74ad3e..1c4c7e5b 100644
--- a/AsbCloudInfrastructure/Services/SAUB/TelemetryService.cs
+++ b/AsbCloudInfrastructure/Services/SAUB/TelemetryService.cs
@@ -38,13 +38,10 @@ namespace AsbCloudInfrastructure.Services.SAUB
         }
 
         private IEnumerable<Telemetry> GetTelemetryCache()
-        {
-            var getter = () => db.Set<Telemetry>()
-                .Include(t => t.Well)
-                .ToArray();
-            return memoryCache.GetOrCreateBasic(getter);
-        }
-
+        => memoryCache.GetOrCreateBasic(
+            db.Set<Telemetry>()
+            .Include(t => t.Well));
+        
         private void DropTelemetryCache()
         {
             memoryCache.DropBasic<Telemetry>();
diff --git a/AsbCloudInfrastructure/Services/WellOperationService/OperationsStatService.cs b/AsbCloudInfrastructure/Services/WellOperationService/OperationsStatService.cs
index 900d5f5d..a360a014 100644
--- a/AsbCloudInfrastructure/Services/WellOperationService/OperationsStatService.cs
+++ b/AsbCloudInfrastructure/Services/WellOperationService/OperationsStatService.cs
@@ -41,7 +41,7 @@ namespace AsbCloudInfrastructure.Services.WellOperationService
             var statsWells = await GetWellsStatAsync(wells, token).ConfigureAwait(false);
 
             var cluster = (await memoryCache
-                .GetOrCreateBasicAsync<Cluster>(db, token))
+                .GetOrCreateBasicAsync(db.Set<Cluster>(), token))
                 .FirstOrDefault(c => c.Id == idCluster);
             var statClusterDto = new StatClusterDto
             {
@@ -132,7 +132,7 @@ namespace AsbCloudInfrastructure.Services.WellOperationService
         private async Task<StatWellDto> CalcWellStatAsync(Well well, CancellationToken token = default)
         {
             var wellType = (await memoryCache
-                .GetOrCreateBasicAsync<WellType>(db, token))
+                .GetOrCreateBasicAsync(db.Set<WellType>(), token))
                 .FirstOrDefault(t => t.Id == well.IdWellType);
             var statWellDto = new StatWellDto
             {
@@ -169,7 +169,7 @@ namespace AsbCloudInfrastructure.Services.WellOperationService
                 .Distinct();
 
             var sectionTypes = memoryCache
-                .GetOrCreateBasic<WellSectionType>(db)
+                .GetOrCreateBasic(db.Set<WellSectionType>())
                 .Where(s => sectionTypeIds.Contains(s.Id))
                 .ToDictionary(s => s.Id);
 
diff --git a/AsbCloudInfrastructure/Services/WellService.cs b/AsbCloudInfrastructure/Services/WellService.cs
index 39374cf1..eea16706 100644
--- a/AsbCloudInfrastructure/Services/WellService.cs
+++ b/AsbCloudInfrastructure/Services/WellService.cs
@@ -47,13 +47,11 @@ namespace AsbCloudInfrastructure.Services
 
         private Task<IEnumerable<RelationCompanyWell>> GetCacheRelationCompanyWellAsync(CancellationToken token)
         {
-            var getter = async (CancellationToken token) 
-                => (await dbContext.Set<RelationCompanyWell>()
+            return memoryCache.GetOrCreateBasicAsync(
+                dbContext.Set<RelationCompanyWell>()
                     .Include(r => r.Company)
                     .Include(r => r.Well)
-                    .ToArrayAsync(token))
-                .AsEnumerable();
-            return memoryCache.GetOrCreateBasicAsync(getter, token);
+                , token);
         }
 
         private void DropCacheRelationCompanyWell()