前面我們已經(jīng)準(zhǔn)備成功開啟Redis服務(wù)，其端口號(hào)為6379，接下來(lái)我們就看看如何使用C#語(yǔ)言來(lái)操作Redis。就如MongoDB一樣，要操作Redis服務(wù)，自然就需要下載C#的客戶端，這里通過(guò)Nuget下載了“ServiceStack.Redis”客戶端，引入成功之后，就可以使用C#來(lái)對(duì)Redis服務(wù)進(jìn)行操作了。
由于Redis一般是用來(lái)作為緩存的，也就是一般我們把一些不經(jīng)常改變的數(shù)據(jù)通過(guò)Redis緩存起來(lái)，之后用戶的請(qǐng)求就不需要再訪問(wèn)數(shù)據(jù)庫(kù)，而可以直接從Redis緩存中直接獲取，這樣就可以減輕數(shù)據(jù)庫(kù)服務(wù)器的壓力以及加快響應(yīng)速度。既然是用來(lái)做緩存的，也就是通過(guò)指定key值來(lái)把對(duì)應(yīng)Value保存起來(lái)，之后再根據(jù)key值來(lái)獲得之前緩存的值。具體的操作代碼如下所示，這里就不過(guò)多介紹了。
請(qǐng)參考以下代碼 -
class Program
{
static void Main(string[] args)
{
//在Redis中存儲(chǔ)常用的5種數(shù)據(jù)類型：String,Hash,List,SetSorted set
var client = new RedisClient("127.0.0.1", 6379);
//AddString(client);
//AddHash(client);
//AddList(client);
//AddSet(client);
AddSetSorted(client);
Console.ReadLine();
}
private static void AddString(RedisClient client)
{
var timeOut = new TimeSpan(0,0,0,30);
client.Add("Test", "Learninghard", timeOut);
while (true)
{
if (client.ContainsKey("Test"))
{
Console.WriteLine("String Key: Test -Value: {0}, 當(dāng)前時(shí)間: {1}", client.Get<string>("Test"), DateTime.Now);
Thread.Sleep(10000);
}
else
{
Console.WriteLine("Value 已經(jīng)過(guò)期了，當(dāng)前時(shí)間：{0}", DateTime.Now);
break;
}
}
var person = new Person() {Name = "Learninghard", Age = 26};
client.Add("lh", person);
var cachePerson = client.Get<Person>("lh");
Console.WriteLine("Person's Name is : {0}, Age: {1}", cachePerson.Name, cachePerson.Age);
}
private static void AddHash(RedisClient client)
{
if (client == null) throw new ArgumentNullException("client");
client.SetEntryInHash("HashId", "Name", "Learninghard");
client.SetEntryInHash("HashId", "Age", "26");
client.SetEntryInHash("HashId", "Sex", "男");
var hashKeys = client.GetHashKeys("HashId");
foreach (var key in hashKeys)
{
Console.WriteLine("HashId--Key:{0}", key);
}
var haskValues = client.GetHashValues("HashId");
foreach (var value in haskValues)
{
Console.WriteLine("HashId--Value:{0}", value);
}
var allKeys = client.GetAllKeys(); //獲取所有的key。
foreach (var key in allKeys)
{
Console.WriteLine("AllKey--Key:{0}", key);
}
}
private static void AddList(RedisClient client)
{
if (client == null) throw new ArgumentNullException("client");
client.EnqueueItemOnList("QueueListId", "1.Learnghard"); //入隊(duì)
client.EnqueueItemOnList("QueueListId", "2.張三");
client.EnqueueItemOnList("QueueListId", "3.李四");
client.EnqueueItemOnList("QueueListId", "4.王五");
var queueCount = client.GetListCount("QueueListId");
for (var i = 0; i < queueCount; i++)
{
Console.WriteLine("QueueListId出隊(duì)值：{0}", client.DequeueItemFromList("QueueListId")); //出隊(duì)(隊(duì)列先進(jìn)先出)
}
client.PushItemToList("StackListId", "1.Learninghard"); //入棧
client.PushItemToList("StackListId", "2.張三");
client.PushItemToList("StackListId", "3.李四");
client.PushItemToList("StackListId", "4.王五");
var stackCount = client.GetListCount("StackListId");
for (var i = 0; i < stackCount; i++)
{
Console.WriteLine("StackListId出棧值：{0}", client.PopItemFromList("StackListId")); //出棧(棧先進(jìn)后出)
}
}
//它是string類型的無(wú)序集合。set是通過(guò)hash table實(shí)現(xiàn)的，添加，刪除和查找,對(duì)集合我們可以取并集，交集，差集
private static void AddSet(RedisClient client)
{
if (client == null) throw new ArgumentNullException("client");
client.AddItemToSet("Set1001", "A");
client.AddItemToSet("Set1001", "B");
client.AddItemToSet("Set1001", "C");
client.AddItemToSet("Set1001", "D");
var hastset1 = client.GetAllItemsFromSet("Set1001");
foreach (var item in hastset1)
{
Console.WriteLine("Set無(wú)序集合Value:{0}", item); //出來(lái)的結(jié)果是無(wú)須的
}
client.AddItemToSet("Set1002", "K");
client.AddItemToSet("Set1002", "C");
client.AddItemToSet("Set1002", "A");
client.AddItemToSet("Set1002", "J");
var hastset2 = client.GetAllItemsFromSet("Set1002");
foreach (var item in hastset2)
{
Console.WriteLine("Set無(wú)序集合ValueB:{0}", item); //出來(lái)的結(jié)果是無(wú)須的
}
var hashUnion = client.GetUnionFromSets(new string[] { "Set1001", "Set1002" });
foreach (var item in hashUnion)
{
Console.WriteLine("求Set1001和Set1002的并集:{0}", item); //并集
}
var hashG = client.GetIntersectFromSets(new string[] { "Set1001", "Set1002" });
foreach (var item in hashG)
{
Console.WriteLine("求Set1001和Set1002的交集:{0}", item); //交集
}
var hashD = client.GetDifferencesFromSet("Set1001", new string[] { "Set1002" }); //[返回存在于第一個(gè)集合，但是不存在于其他集合的數(shù)據(jù)。差集]
foreach (var item in hashD)
{
Console.WriteLine("求Set1001和Set1002的差集:{0}", item); //差集
}
}
/*
sorted set 是set的一個(gè)升級(jí)版本，它在set的基礎(chǔ)上增加了一個(gè)順序的屬性，這一屬性在添加修改.元素的時(shí)候可以指定，
* 每次指定后，zset(表示有序集合)會(huì)自動(dòng)重新按新的值調(diào)整順序?？梢岳斫鉃橛辛械谋?，一列存 value,一列存順序。操作中key理解為zset的名字.
*/
private static void AddSetSorted(RedisClient client)
{
if (client == null) throw new ArgumentNullException("client");
client.AddItemToSortedSet("SetSorted1001", "A");
client.AddItemToSortedSet("SetSorted1001", "B");
client.AddItemToSortedSet("SetSorted1001", "C");
var listSetSorted = client.GetAllItemsFromSortedSet("SetSorted1001");
foreach (var item in listSetSorted)
{
Console.WriteLine("SetSorted有序集合{0}", item);
}
client.AddItemToSortedSet("SetSorted1002", "A", 400);
client.AddItemToSortedSet("SetSorted1002", "D", 200);
client.AddItemToSortedSet("SetSorted1002", "B", 300);
// 升序獲取第一個(gè)值:"D"
var list = client.GetRangeFromSortedSet("SetSorted1002", 0, 0);
foreach (var item in list)
{
Console.WriteLine(item);
}
//降序獲取第一個(gè)值:"A"
list = client.GetRangeFromSortedSetDesc("SetSorted1002", 0, 0);
foreach (var item in list)
{
Console.WriteLine(item);
}
}
}
class Person
{
public string Name { get; set; }
public int Age { get; set; }
}
如何要想查看自己操作是否成功，也可以像MongoDB那樣下載一個(gè)客戶端工具，這里推薦一款Redis Desktop Manager。這個(gè)工具就相當(dāng)于SQL Server的客戶端工具一樣。通過(guò)這款工具可以查看Redis服務(wù)器中保存的數(shù)據(jù)和對(duì)應(yīng)格式。其使用也非常簡(jiǎn)單，只需要添加一個(gè)Redis服務(wù)連接即可。該工具的下載地址為：http://pan.baidu.com/s/1sjp55Ul
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