我的NopCommerce之旅(5): 缓存

1             //cache managers
2             if (config.RedisCachingEnabled)
3             {
4                 builder.RegisterType<RedisCacheManager>().As<ICacheManager>().Named<ICacheManager>("nop_cache_static").InstancePerLifetimeScope();
5             }
6             else
7             {
8                 builder.RegisterType<MemoryCacheManager>().As<ICacheManager>().Named<ICacheManager>("nop_cache_static").SingleInstance();
9             }

 1             var redisCachingNode = section.SelectSingleNode("RedisCaching");
 2             if (redisCachingNode != null && redisCachingNode.Attributes != null)
 3             {
 4                 var enabledAttribute = redisCachingNode.Attributes["Enabled"];
 5                 if (enabledAttribute != null)
 6                     config.RedisCachingEnabled = Convert.ToBoolean(enabledAttribute.Value);
 7 
 8                 var connectionStringAttribute = redisCachingNode.Attributes["ConnectionString"];
 9                 if (connectionStringAttribute != null)
10                     config.RedisCachingConnectionString = connectionStringAttribute.Value;
11             }

        [NonAction]
        protected virtual List<int> GetChildCategoryIds(int parentCategoryId)
        {
            string cacheKey = string.Format(ModelCacheEventConsumer.CATEGORY_CHILD_IDENTIFIERS_MODEL_KEY, 
                parentCategoryId, 
                string.Join(",", _workContext.CurrentCustomer.GetCustomerRoleIds()), 
                _storeContext.CurrentStore.Id);
            return _cacheManager.Get(cacheKey, () =>
            {
                var categoriesIds = new List<int>();
                var categories = _categoryService.GetAllCategoriesByParentCategoryId(parentCategoryId);
                foreach (var category in categories)
                {
                    categoriesIds.Add(category.Id);
                    categoriesIds.AddRange(GetChildCategoryIds(category.Id));
                }
                return categoriesIds;
            });
        }