C # ObjectCache and OutputCache Cache,

C # ObjectCache and OutputCache Cache,

1 /// <summary> 2 // Cache operation class 3 /// </summary> 4 public class Cache 5 {6 private static List <string> _ allUseCacheKey = new List <string> (); 7 private static ObjectCache _ cache = MemoryCache. default; 8 9 // <summary> 10 // Add cache 11 /// </summary> 12 // <param name = "key"> Key unique </param> 13 // <param name = "value"> value </param> 14 // <param name = "cacheOffset"> timeout </param> 15 public static void Add (string key, object value, DateTimeOffset cacheOffset) 16 {17 if (_ allUseCacheKey. contains (key) 18 {19 Remove (key); 20} 21 _ allUseCacheKey. add (key); 22 _ cache. add (key, value, cacheOffset ); 23} 24 25 // <summary> 26 // remove cache 27 /// </summary> 28 // <param name = "key"> Key </param> 29 public static void Remove (string key) 30 {31 if (_ allUseCacheKey. contains (key) 32 {33 _ allUseCacheKey. remove (key); 34} 35 _ cache. remove (key ); 36} 37 38 // <summary> 39 // read cache 40 // </summary> 41 // <param name = "key"> Key </param> 42 // <returns> </returns> 43 public static object Read (string key) 44 {45 if (_ allUseCacheKey. contains (key) 46 return _ cache [key]; 47 return null; 48} 49 50 // <summary> 51 // Clear all caches 52 // </summary> 53 public static void Clear () 54 {55 foreach (string value in _ allUseCacheKey) 56 {57 _ cache. remove (value); 58} 59 _ allUseCacheKey. clear (); 60} 61}

Public class SysuserStorageService {private int _ adminId; public SysuserStorageService (int adminId) {_ adminId = adminId ;} /// <summary> /// cache some content /// </summary> public void Storage () {tbl_admin user = new tbl_admin (); // obtain the object Cache as needed. add (_ adminId + "-Admin-" + SystemSetting. wms, user, SystemSetting. offSetTime); Cache. add (_ adminId + "-LastLoginTime-" + SystemSetting. wms, DateTime. now, SystemSetting. offSetTime);} public tbl_admin GetAdmin {get {return (tbl_admin) Cache. read (_ adminId + "-Admin-" + SystemSetting. wms) ;}} public string GetLastLoginTime {get {return (DateTime) Cache. read (_ adminId + "-LastLoginTime-" + SystemSetting. wms )). toString ("yyyy-MM-dd HH: mm: ss ");}}}

Public class SystemSetting {// <summary> // cache definition // </summary> public const string ShopWms = "Wms "; /// <summary> /// cache timeout /// </summary> public static DateTimeOffset OffSetTime = DateTimeOffset. now. addHours (24); // <summary> // log on to the Session // </summary> public const string LoginSession = "";}

SysuserStorageService storage = new SysuserStorageService (AdminId); // call
Tbl_admin User = storage. GetAdmin;

 

// Page Cache

[OutputCache (duration= 300, VaryByParam = "productno; brand; years")]

The above Code uses the @ OutputCatch command to declare the page cache. The page will be cached for 300 seconds. The @ OutputCatch command contains 10 attributes. These attributes can be used to set cache for different page conditions. common attributes are as follows:

 

CacheProfile:Obtain or set the OutputCacheProfile name.

Duration:Obtain or set the time that the cache entry needs to be retained in the cache.

VaryByHeader:Gets or sets the names of all well-separated HTTP headers used to change cache items.

Location:Gets or sets a value that determines the location of the cache item, including Any, Clint, Downstream, None, Server, and ServerAndClient. The default value is Any.

VaryByControl:Gets or sets a cluster of separated control identifiers that are contained in the current page or user control and used to change the current cache item.

NoStore:Gets or sets a value that determines whether the "Http Cache-Control: no-store" command is set.

VaryByCustom:Obtains the list of custom strings used by the output cache to change the cache items.

Enabled:Gets or sets a value indicating whether the output cache is enabled for the current content.

VaryByParam:Obtain the list of query string or form POST parameters.