public T Get <T>(string key)
{
// Look for cache key.
var cacheEntry = _cache?.Get(key);
if (cacheEntry == null)
{
return(default(T));
}
var raw = Encoding.UTF8.GetString(cacheEntry);
_logger?.LogInformation(1001, "Getting item {ID}", raw);
return(JsonConvert.DeserializeObject <T>(raw, config));
}
public IList <IServiceInstance> Get(string name)
{
var instanceData = _distributedCache?.Get(name);
if (instanceData != null && instanceData.Length > 0)
{
return(DeserializeFromCache <List <SerializableIServiceInstance> >(instanceData).ToList <IServiceInstance>());
}
return(null);
}
public T Get <T>(string name)
{
var instanceData = _distributedCache?.Get(name);
if (instanceData != null && instanceData.Length > 0)
{
return(DeserializeFromCache <T>(instanceData));
}
return(default(T));
}
private Weather checkCache(WeatherForCreationDto weatherForCreationDto)
{
// use zip as cache key else address
var key = weatherForCreationDto.Zip == null
? weatherForCreationDto.Address
: weatherForCreationDto.Zip.ToString();
var cached = _cache.Get(key);
if (cached == null)
{
return(null);
}
using (var ms = new MemoryStream(cached))
{
var cachedWeather = new BinaryFormatter()
.Deserialize(ms) as Weather;
return(cachedWeather);
}
}
public RenderingContextResult BeginContext(string key)
{
bool authenticated = _principalAccessor.Principal.Identity.IsAuthenticated;
var cachedResult = (authenticated) ? (string)null : _htmlCache.Get(key);
if (cachedResult != null)
{
return new RenderingContextResult {
CachedResult = cachedResult
}
}
;
var parentContext = _requestCache.Get <RenderingContext>(ContextKey);
var currentContext = new RenderingContext(parentContext, key);
_requestCache.Set(ContextKey, currentContext);
return(new RenderingContextResult {
StartedContext = currentContext
});
}
public IActionResult GetDataWithRedisCache()
{
string cacheKey = "VietNamMapJson";
JObject geoData;
string content;
try
{
var redisCacheVietNamMap = _distributedCache.Get(cacheKey);
if (redisCacheVietNamMap == null)
{
ResponseModel response = VietNamMapCommon.LoadDataForVNMap(out geoData);
if (ResponseType.Success != response.Type)
{
content = JsonConvert.SerializeObject(new { success = false, data = string.Empty, message = response.Message });
return(Content(content, "application/json"));
}
DistributedCacheEntryOptions options = new DistributedCacheEntryOptions
{
};
_distributedCache.Set(cacheKey, Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(geoData)));
}
else
{
geoData = JObject.Parse(Encoding.UTF8.GetString(redisCacheVietNamMap));
}
}
catch (Exception ex)
{
throw ex;
}
content = JsonConvert.SerializeObject(new { success = true, data = geoData });
return(Content(content, "application/json"));
}
public IActionResult Get()
{
DateTime?cacheEntry;
if (distributedCache.Get("Weather") == null)
{
cacheEntry = DateTime.Now;
var cacheEntryOptions = new DistributedCacheEntryOptions()
.SetSlidingExpiration(TimeSpan.FromSeconds(5))
.SetAbsoluteExpiration(TimeSpan.FromSeconds(10));
distributedCache.SetString("Weather", cacheEntry.ToString(), cacheEntryOptions);
}
var cachedDate = distributedCache.GetString("Weather");
var rng = new Random();
return(Ok(from temp in Enumerable.Range(1, 5)
select new
{
Date = cachedDate,
TemperatureC = rng.Next(-20, 55),
Summary = "Rainy day"
}));
}
public T GetFromCache <T>(string key)
{
try
{
if (key == null)
{
_logger.LogInformation($"Provided key is null.");
return(default(T));
}
var value = _cache.Get(key);
var result = FromByteArray <T>(value);
_logger.LogDebug($"Retrieved obj value from cache. Key: {key} Value:{result}");
return(result);
}
catch (Exception ex)
{
_logger.LogError($"Failed to retrieve value from cache. Key: {key} Exception:{ex}");
}
return(default(T));
}
public static IList <IServiceInstance> GetServiceInstancesWithCache(this IServiceDiscovery serviceDiscovery, string serviceId, IDistributedCache distributedCache, string serviceInstancesKeyPrefix = "ServiceDiscovery-ServiceInstances-")
{
// if distributed cache was provided, just make the call back to the provider
if (distributedCache != null)
{
// check the cache for existing service instances
var instanceData = distributedCache.Get(serviceInstancesKeyPrefix + serviceId);
if (instanceData != null && instanceData.Length > 0)
{
return(DeserializeFromCache <List <SerializableIServiceInstance> >(instanceData).ToList <IServiceInstance>());
}
}
// cache not found or instances not found, call out to the provider
var instances = serviceDiscovery.GetServiceInstances(serviceId);
if (distributedCache != null)
{
distributedCache.Set(serviceInstancesKeyPrefix + serviceId, SerializeForCache(MapToSerializable(instances)));
}
return(instances);
}
public IActionResult Index()
{
//var data = cache.GetString("data");
//if (!string.IsNullOrEmpty(data))
//{
// ViewBag.Message = data;
//}
//else
//{
// ViewBag.Message = "Nothing in cache";
// cache.SetString("data", "This is cache data");
//}
var data = cache.Get("data");
if (data != null)
{
var mgs = Encoding.UTF8.GetString(data);
ViewBag.Message = mgs;
}
else
{
ViewBag.Message = "Nothing in cache";
var text = "This is sample text data";
var value = Encoding.UTF8.GetBytes(text);
cache.Set("data", value);
}
var msg = Encoding.UTF8.GetBytes("This is Session data");
HttpContext.Session.Set("message", msg);
HttpContext.Session.SetInt32("count", 150);
HttpContext.Session.SetString("name", "Apple");
ViewBag.Flag = HttpContext.Items["flag"].ToString();
return(View());
}
public IActionResult IndexDistributed()
{
string currentTime;
byte[] value = _distributedCache.Get(CURRENT_DATE);
if (value != null)
{
currentTime = Encoding.UTF8.GetString(value);
}
else
{
currentTime = DateTime.Now.ToString("dd/MM/yyyy hh:mm");
DistributedCacheEntryOptions cacheEntryOptions = new DistributedCacheEntryOptions
{
SlidingExpiration = TimeSpan.FromSeconds(60)
};
_distributedCache.Set(CURRENT_DATE, Encoding.UTF8.GetBytes(currentTime), cacheEntryOptions);
}
return(Content(currentTime));
}
public IActionResult Index()
{
List <Product> products = null;
var cachedProduct = _distributedCache.Get("product");//cache_product
if (cachedProduct == null)
{
products = GetProducts();
var stringproduct = JsonConvert.SerializeObject(products);
var bytes = Encoding.UTF8.GetBytes(stringproduct);
_distributedCache.Set("product", bytes
, new DistributedCacheEntryOptions
{
AbsoluteExpirationRelativeToNow = TimeSpan.FromSeconds(500)
});
return(Ok(products));
}
else
{
var bytesAsString = Encoding.UTF8.GetString(cachedProduct);
products = JsonConvert.DeserializeObject <List <Product> >(bytesAsString);
return(Ok(products));
}
}
/// <summary>
/// 获取或刷新在线用户信息
/// </summary>
/// <param name="userName">用户名</param>
/// <returns>在线用户信息</returns>
public virtual OnlineUser GetOrRefresh(string userName)
{
string key = $"Identity_OnlineUser_{userName}";
DistributedCacheEntryOptions options = new DistributedCacheEntryOptions();
options.SetSlidingExpiration(TimeSpan.FromMinutes(30));
return(_cache.Get <OnlineUser>(key,
() =>
{
return ServiceLocator.Instance.ExcuteScopedWork <OnlineUser>(provider =>
{
UserManager <TUser> userManager = provider.GetService <UserManager <TUser> >();
TUser user = userManager.FindByNameAsync(userName).Result;
if (user == null)
{
return null;
}
IList <string> roles = userManager.GetRolesAsync(user).Result;
return GetOnlineUser(user, roles.ToArray());
});
},
options));
}
public dynamic InformacionPantallaError(string sesion)
{
if (!String.IsNullOrEmpty(sesion))
{
JObject ObjTitulo = JsonConvert.DeserializeObject <JObject>(CacheFunction.LeerByte(cache.Get(sesion + "-TituloError")));
JObject ObjSubTitulo = JsonConvert.DeserializeObject <JObject>(CacheFunction.LeerByte(cache.Get(sesion + "-SubTituloError")));
string titulo;
try { titulo = ObjTitulo["Mensaje"].ToString(); } catch { throw; };
string subtitulo;
try { subtitulo = ObjSubTitulo["Mensaje"].ToString(); } catch { throw; };
string origen;
try { origen = CacheFunction.LeerByte(cache.Get(sesion + "-Origen")); } catch { throw; };
return(new JObject
{
{ "TituloError", titulo },
{ "SubTituloError", subtitulo },
{ "Origen", origen }
});
}
return(string.Empty);
}
public IActionResult GetDistributedCache()
{
return(Ok(Encoding.UTF8.GetString(_cache.Get(_cacheKey))));
}
public byte[] Get(string key)
{
return(_cache.Get(key));
}
public IActionResult ImageUrl()
{
byte[] imgByte = _distributedCache.Get("image");
return(File(imgByte, "image/jpg"));
}
public Task <AuthenticationTicket> RetrieveAsync(string key)
{
var ticket = DeserializeFromBytes(_cache.Get(key));
return(Task.FromResult(ticket));
}
public void Set_Get_Test()
{
string key = "key001";
TestEntity entity = new TestEntity()
{
Name = "osharp", IsDeleted = true, AddDate = DateTime.Now, Id = 1
};
_cache.Set(key, entity);
TestEntity newEntity = _cache.Get <TestEntity>(key);
newEntity.ShouldNotBeNull();
newEntity.Name.ShouldBe(entity.Name);
newEntity.AddDate.ShouldBe(entity.AddDate);
_cache.Remove(key);
_cache.Get <TestEntity>(key).ShouldBeNull();
key = "key002";
_cache.Set(key, entity, 5);
newEntity = _cache.Get <TestEntity>(key);
newEntity.ShouldNotBeNull();
newEntity.Name.ShouldBe(entity.Name);
_cache.Remove(key);
_cache.Get <TestEntity>(key).ShouldBeNull();
IFunction function = new Function()
{
CacheExpirationSeconds = 10, IsCacheSliding = false
};
key = "key003";
_cache.Set(key, entity, function);
newEntity = _cache.Get <TestEntity>(key);
newEntity.ShouldNotBeNull();
newEntity.Name.ShouldBe(entity.Name);
_cache.Remove(key);
_cache.Get <TestEntity>(key).ShouldBeNull();
function.CacheExpirationSeconds = 0; //过期时间为0不缓存
_cache.Set(key, entity, function);
newEntity = _cache.Get <TestEntity>(key);
newEntity.ShouldBeNull();
key = "key004";
newEntity = _cache.Get(key, () => entity, 10);
newEntity.ShouldNotBeNull();
newEntity.Name.ShouldBe(entity.Name);
_cache.Remove(key);
_cache.Get <TestEntity>(key).ShouldBeNull();
key = "key005";
newEntity = _cache.Get(key, () => entity, function);
newEntity.ShouldNotBeNull();
newEntity.Name.ShouldBe(entity.Name);
_cache.Remove(key);
_cache.Get <TestEntity>(key).ShouldBeNull();
}
private List <CategoryViewModel> GetCache() => _cache.Get <List <CategoryViewModel> >(_key);
/// <summary>
/// 获取缓存，反序列化成对象返回
/// </summary>
/// <param name="cache"></param>
/// <param name="key">key</param>
/// <returns>对象</returns>
public static object GetObject(this IDistributedCache cache, string key)
{
return(Deserialize(cache.Get(key)));
}
public static T GetFromCache <T>(string cacheKey, IDistributedCache cache)
{
var cachedObj = cache.Get(cacheKey.ToUpper());
return(cachedObj == null ? default : BytesToObject <T>(cachedObj));
}
/// <summary>
/// 获取指定角色名与实体类型的数据权限过滤规则
/// </summary>
/// <param name="roleName">角色名称</param>
/// <param name="entityTypeFullName">实体类型名称</param>
/// <returns>数据过滤条件组</returns>
public FilterGroup GetFilterGroup(string roleName, string entityTypeFullName)
{
string key = $"Security_EntityRole_{roleName}_{entityTypeFullName}";
return(_cache.Get <FilterGroup>(key));
}
private StoreKey[] ReadTempStoredKeys()
{
return(cache.Get("TEMP_" + instanceKeyService.RetrieveKey().ToString()).DeserializeStoreKeys());
}
public async Task <IActionResult> Go(string id)
{
if (id == null)
{
return(NotFound("Link does not valid!"));
}
var getCache = _cache.Get(id);
var cachedLink = Encoding.UTF8.GetString(getCache);
if (cachedLink != null)
{
Redirect(cachedLink);
}
var links = await _context.Links
.FirstOrDefaultAsync(l => l.shortLink == id);
if (links == null)
{
return(NotFound("There is no any result!"));
}
var views = await _context.Views
.FirstOrDefaultAsync(w => w.ip == GetLocalIPAddress() && w.link == id);
if (views == null)
{
try
{
links.views = links.views + 1;
_context.Update(links);
await _context.SaveChangesAsync();
var viewsModel = new View();
viewsModel.ip = GetLocalIPAddress();
viewsModel.link = id;
viewsModel.date = DateTime.Now;
_context.Add(viewsModel);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
return(NotFound("'View' error!"));
}
}
try
{
links.hits = links.hits + 1;
await _hubContext.Clients.Group(id).SendAsync("ReceiveStatus", links.hits, links.views);
_context.Update(links);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
return(NotFound("'Hits' error!"));
}
return(Redirect(links.fullLink));
}
private void BeforeAccessNotification(TokenCacheNotificationArgs args)
{
Deserialize(_cache.Get(GetCacheKey()));
}
/// <inheritdoc/>
public byte[] Get(string key)
{
FusioCacheChaosUtils.MaybeChaos(ChaosMinDelay, ChaosMaxDelay, ChaosThrowProbability);
return(_innerCache.Get(key));
}
/// <summary>
/// Sync Get
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public byte[] Get(string key)
{
return(_syncPolicy.Execute(() => _distributedCache.Get(key)));
}
public T Get <T>(String cacheKey)
{
var retorno = Deserialize <T>(cache.Get(cacheKey));
return(retorno);
}
/// <summary>
/// 获取指定角色名与实体类型的数据权限过滤规则
/// </summary>
/// <param name="roleName">角色名称</param>
/// <param name="entityTypeFullName">实体类型名称</param>
/// <returns>数据过滤条件组</returns>
/// <param name="operation">数据权限操作</param>
public virtual FilterGroup GetFilterGroup(string roleName, string entityTypeFullName, DataAuthOperation operation)
{
string key = GetKey(roleName, entityTypeFullName, operation);
return(_cache.Get <FilterGroup>(key));
}