using System;
using System.Collections.Generic;
namespace BeIT.MemCached {
class Example {
public static void Main(string[] args) {
//---------------------
// Setting up a client.
//---------------------
Console.Out.WriteLine("Setting up Memcached Client.");
MemcachedClient.Setup("MyCache", new string[] { "localhost" });
//It is possible to have several clients with different configurations:
//If it is impossible to resolve the hosts, this method will throw an exception.
try {
MemcachedClient.Setup("MyOtherCache", new string[]{ "server1.example.com:12345", "server2.example.com:12345"});
} catch (Exception e) {
Console.WriteLine(e.Message);
}
//Get the instance we just set up so we can use it. You can either store this reference yourself in
//some field, or fetch it every time you need it, it doesn't really matter.
MemcachedClient cache = MemcachedClient.GetInstance("MyCache");
//It is also possible to set up clients in the standard config file. Check the section "beitmemcached"
//in the App.config file in this project and you will see that a client called "MyConfigFileCache" is defined.
MemcachedClient configFileCache = MemcachedClient.GetInstance("MyConfigFileCache");
//Change client settings to values other than the default like this:
cache.SendReceiveTimeout = 5000;
cache.ConnectTimeout = 5000;
cache.MinPoolSize = 1;
cache.MaxPoolSize = 5;
//----------------
// Using a client.
//----------------
//Set some items
Console.Out.WriteLine("Storing some items.");
cache.Set("mystring", "The quick brown fox jumped over the lazy dog.");
cache.Set("myarray", new string[]{"This is the first string.", "This is the second string."});
cache.Set("myinteger", 4711);
cache.Set("mydate", new DateTime(2008, 02, 23));
//Use custom hash
cache.Set("secondstring", "Flygande b鋍kasiner s鰇a hwila p?mjuka tufvor", 4711);
//Get a string
string str = cache.Get("mystring") as string;
if (str != null) {
Console.Out.WriteLine("Fetched item with key: mystring, value: " + str);
}
//Get an object
string[] array = cache.Get("myarray") as string[];
if (array != null) {
Console.Out.WriteLine("Fetched items with key: myarray, value 1: " + array[0] + ", value 2: " + array[1]);
}
//Get several values at once
object[] result = cache.Get(new string[]{"myinteger", "mydate"});
if (result[0] != null && result[0] is int) {
Console.Out.WriteLine("Fetched item with key: myinteger, value: " + (int)result[0]);
}
if (result[1] != null && result[1] is DateTime) {
Console.Out.WriteLine("Fetched item with key: mydate, value: " + (DateTime)result[1]);
}
str = cache.Get("secondstring", 4711) as string;
if (str != null) {
Console.Out.WriteLine("Fetched item with key and custom hash: secondstring, value: " + str);
}
//Set a counter
Console.Out.WriteLine("Setting an item for incrementing and decrementing.");
cache.SetCounter("mycounter", 9000);
ulong? counter = cache.GetCounter("mycounter");
if (counter.HasValue) {
Console.Out.WriteLine("Fetched mycounter, value: " + counter.Value);
}
//Increment the counter
counter = cache.Increment("mycounter", 1);
if (counter.HasValue) {
Console.Out.WriteLine("Incremented mycounter with 1, new value: " + counter.Value);
}
//Decrement the counter
counter = cache.Decrement("mycounter", 9000);
if (counter.HasValue) {
Console.Out.WriteLine("Decremented mycounter with 9000, new value: " + counter.Value);
}
//Append and prepend
Console.Out.WriteLine("Storing bar for append/prepend");
cache.Set("foo", "bar");
Console.Out.WriteLine("Appending baz");
cache.Append("foo", " baz");
Console.Out.WriteLine("Prepending foo");
cache.Prepend("foo", "foo ");
Console.Out.WriteLine("New value: " + cache.Get("foo"));
//Cas
cache.Delete("castest");
Console.Out.WriteLine("Trying to CAS non-existant key castest: " + cache.CheckAndSet("castest", "a", 0));
Console.Out.WriteLine("Setting value for key: castest, value: a");
cache.Set("castest", "a");
Console.Out.WriteLine("Trying to CAS key castest with the wrong unique: " + cache.CheckAndSet("castest", "a", 0));
ulong unique;
cache.Gets("castest", out unique);
Console.Out.WriteLine("Getting cas unique for key castest: " + unique);
Console.Out.WriteLine("Trying to CAS again with the above unique: " + cache.CheckAndSet("castest", "b", unique));
string value = cache.Gets("castest", out unique) as string;
Console.Out.WriteLine("New value: " + value + ", new unique: " + unique);
Console.Out.WriteLine("Displaying the socketpool status:");
foreach (KeyValuePair<string, Dictionary<string, string>> host in cache.Status()) {
Console.Out.WriteLine("Host: " + host.Key);
foreach (KeyValuePair<string, string> item in host.Value) {
Console.Out.WriteLine("\t" + item.Key + ": " + item.Value);
}
Console.Out.WriteLine();
}
Console.Out.WriteLine();
Console.Out.WriteLine("Finished. Press enter to exit.");
Console.In.ReadLine();
}
}
}
注：memcached是以KEY-VALUE的方式進行數據存儲的，KEY的大小限制：Key（max）<=250個字符；VALUE在存儲時有限制：Value（max）<= 1M；memcached默認過期時間：ExpiresTime（max）= 30（days）。
