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using System;
using System.Threading;
using CacheManager.Core;
using Microsoft.Extensions.Logging;
#if NET451
using Microsoft.Practices.Unity;
#else
using Unity;
#endif
namespace CacheManager.Examples
{
public class Program
{
private static void Main()
{
EventsExample();
UnityInjectionExample();
UnityInjectionExample_Advanced();
SimpleCustomBuildConfigurationUsingConfigBuilder();
SimpleCustomBuildConfigurationUsingFactory();
UpdateTest();
UpdateCounterTest();
LoggingSample();
}
#if !NETCOREAPP
private static void MostSimpleCacheManager()
{
var config = new ConfigurationBuilder()
.WithSystemRuntimeCacheHandle()
.Build();
var cache = new BaseCacheManager<string>(config);
// or
var cache2 = CacheFactory.FromConfiguration<string>(config);
}
private static void MostSimpleCacheManagerB()
{
var cache = new BaseCacheManager<string>(
new CacheManagerConfiguration()
.Builder
.WithSystemRuntimeCacheHandle()
.Build());
}
private static void MostSimpleCacheManagerC()
{
var cache = CacheFactory.Build<string>(
p => p.WithSystemRuntimeCacheHandle());
}
private static void MostSimpleCacheManagerWithLogging()
{
var config = new ConfigurationBuilder()
.WithMicrosoftLogging(l => l.AddConsole(LogLevel.Information))
.WithSystemRuntimeCacheHandle()
.Build();
var cache = new BaseCacheManager<string>(config);
// or
var cache2 = CacheFactory.FromConfiguration<string>(config);
}
private static void EditExistingConfiguration()
{
var config = new ConfigurationBuilder()
.WithSystemRuntimeCacheHandle()
.EnableStatistics()
.Build();
config = new ConfigurationBuilder(config)
.WithMicrosoftLogging(f => f.AddConsole())
.Build();
}
#endif
private static void LoggingSample()
{
var cache = CacheFactory.Build<string>(
c =>
c.WithMicrosoftLogging(log =>
{
log.AddConsole(LogLevel.Trace);
})
.WithDictionaryHandle()
.WithExpiration(ExpirationMode.Sliding, TimeSpan.FromSeconds(10)));
cache.AddOrUpdate("myKey", "someregion", "value", _ => "new value");
cache.AddOrUpdate("myKey", "someregion", "value", _ => "new value");
cache.Expire("myKey", "someregion", TimeSpan.FromMinutes(10));
var val = cache.Get("myKey", "someregion");
}
#if !NETCOREAPP
private static void AppConfigLoadInstalledCacheCfg()
{
var cache = CacheFactory.FromConfiguration<object>("myCache");
cache.Add("key", "value");
}
#endif
private static void EventsExample()
{
var cache = CacheFactory.Build<string>(s => s.WithDictionaryHandle());
cache.OnAdd += (sender, args) => Console.WriteLine("Added " + args.Key);
cache.OnGet += (sender, args) => Console.WriteLine("Got " + args.Key);
cache.OnRemove += (sender, args) => Console.WriteLine("Removed " + args.Key);
cache.Add("key", "value");
var val = cache.Get("key");
cache.Remove("key");
}
#if !NETCOREAPP
private static void RedisSample()
{
var cache = CacheFactory.Build<int>(settings =>
{
settings
.WithSystemRuntimeCacheHandle()
.And
.WithRedisConfiguration("redis", config =>
{
config.WithAllowAdmin()
.WithDatabase(0)
.WithEndpoint("localhost", 6379);
})
.WithMaxRetries(1000)
.WithRetryTimeout(100)
.WithRedisBackplane("redis")
.WithRedisCacheHandle("redis", true);
});
cache.Add("test", 123456);
cache.Update("test", p => p + 1);
var result = cache.Get("test");
}
#endif
private static void SimpleCustomBuildConfigurationUsingConfigBuilder()
{
// this is using the CacheManager.Core.Configuration.ConfigurationBuilder to build a
// custom config you can do the same with the CacheFactory
var cfg = ConfigurationBuilder.BuildConfiguration(settings =>
{
settings.WithUpdateMode(CacheUpdateMode.Up)
.WithDictionaryHandle()
.EnablePerformanceCounters()
.WithExpiration(ExpirationMode.Sliding, TimeSpan.FromSeconds(10));
});
var cache = CacheFactory.FromConfiguration<string>(cfg);
cache.Add("key", "value");
// reusing the configuration and using the same cache for different types:
var numbers = CacheFactory.FromConfiguration<int>(cfg);
numbers.Add("intKey", 2323);
numbers.Update("intKey", v => v + 1);
}
private static void SimpleCustomBuildConfigurationUsingFactory()
{
var cache = CacheFactory.Build(settings =>
{
settings
.WithUpdateMode(CacheUpdateMode.Up)
.WithDictionaryHandle()
.EnablePerformanceCounters()
.WithExpiration(ExpirationMode.Sliding, TimeSpan.FromSeconds(10));
});
cache.Add("key", "value");
}
private static void UnityInjectionExample()
{
var container = new UnityContainer();
container.RegisterType<ICacheManager<object>>(
new ContainerControlledLifetimeManager(),
new InjectionFactory((c) => CacheFactory.Build(s => s.WithDictionaryHandle())));
container.RegisterType<UnityInjectionExampleTarget>();
// resolving the test target object should also resolve the cache instance
var target = container.Resolve<UnityInjectionExampleTarget>();
target.PutSomethingIntoTheCache();
// our cache manager instance should still be there so should the object we added in the
// previous step.
var checkTarget = container.Resolve<UnityInjectionExampleTarget>();
checkTarget.GetSomething();
}
private static void UnityInjectionExample_Advanced()
{
var container = new UnityContainer();
container.RegisterType(
typeof(ICacheManager<>),
new ContainerControlledLifetimeManager(),
new InjectionFactory(
(c, t, n) => CacheFactory.FromConfiguration(
t.GetGenericArguments()[0],
ConfigurationBuilder.BuildConfiguration(cfg => cfg.WithDictionaryHandle()))));
var stringCache = container.Resolve<ICacheManager<string>>();
// testing if we create a singleton instance per type, every Resolve of the same type should return the same instance!
var stringCacheB = container.Resolve<ICacheManager<string>>();
stringCache.Put("key", "something");
var intCache = container.Resolve<ICacheManager<int>>();
var intCacheB = container.Resolve<ICacheManager<int>>();
intCache.Put("key", 22);
var boolCache = container.Resolve<ICacheManager<bool>>();
var boolCacheB = container.Resolve<ICacheManager<bool>>();
boolCache.Put("key", false);
Console.WriteLine("Value type is: " + stringCache.GetType().GetGenericArguments()[0].Name + " test value: " + stringCacheB["key"]);
Console.WriteLine("Value type is: " + intCache.GetType().GetGenericArguments()[0].Name + " test value: " + intCacheB["key"]);
Console.WriteLine("Value type is: " + boolCache.GetType().GetGenericArguments()[0].Name + " test value: " + boolCacheB["key"]);
}
private static void UpdateTest()
{
var cache = CacheFactory.Build<string>(s => s.WithDictionaryHandle());
Console.WriteLine("Testing update...");
if (!cache.TryUpdate("test", v => "item has not yet been added", out string newValue))
{
Console.WriteLine("Value not added?: {0}", newValue == null);
}
cache.Add("test", "start");
Console.WriteLine("Initial value: {0}", cache["test"]);
cache.AddOrUpdate("test", "adding again?", v => "updating and not adding");
Console.WriteLine("After AddOrUpdate: {0}", cache["test"]);
cache.Remove("test");
try
{
var removeValue = cache.Update("test", v => "updated?");
}
catch
{
Console.WriteLine("Error as expected because item didn't exist.");
}
// use try update to not deal with exceptions
if (!cache.TryUpdate("test", v => v, out string removedValue))
{
Console.WriteLine("Value after remove is null?: {0}", removedValue == null);
}
}
private static void UpdateCounterTest()
{
var cache = CacheFactory.Build<long>(s => s.WithDictionaryHandle());
Console.WriteLine("Testing update counter...");
cache.AddOrUpdate("counter", 0, v => v + 1);
Console.WriteLine("Initial value: {0}", cache.Get("counter"));
for (var i = 0; i < 12345; i++)
{
cache.Update("counter", v => v + 1);
}
Console.WriteLine("Final value: {0}", cache.Get("counter"));
}
private static void MultiCacheEvictionWithoutRedisCacheHandle()
{
var config = new ConfigurationBuilder("Redis with Redis Backplane")
.WithDictionaryHandle(true)
.WithExpiration(ExpirationMode.Absolute, TimeSpan.FromSeconds(5))
.And
.WithRedisBackplane("redisConfig")
.WithRedisConfiguration("redisConfig", "localhost,allowadmin=true", enableKeyspaceNotifications: true)
//.WithMicrosoftLogging(new LoggerFactory().AddConsole(LogLevel.Debug))
.Build();
var cacheA = new BaseCacheManager<string>(config);
var cacheB = new BaseCacheManager<string>(config);
var key = "someKey";
cacheA.OnRemove += (s, args) =>
{
Console.WriteLine("A triggered remove: " + args.ToString() + " - key still exists? " + cacheA.Exists(key));
};
cacheB.OnRemove += (s, args) =>
{
Console.WriteLine("B triggered remove: " + args.ToString() + " - key still exists? " + cacheB.Exists(key));
};
cacheA.OnRemoveByHandle += (s, args) =>
{
cacheA.Remove(args.Key);
Console.WriteLine("A triggered removeByHandle: " + args.ToString() + " - key still exists? " + cacheA.Exists(key));
};
cacheB.OnRemoveByHandle += (s, args) =>
{
Console.WriteLine("B triggered removeByHandle: " + args.ToString() + " - key still exists? " + cacheA.Exists(key) + " in A? " + cacheA.Exists(key));
};
cacheA.OnAdd += (s, args) =>
{
Console.WriteLine("A triggered add: " + args.ToString());
};
cacheB.OnAdd += (s, args) =>
{
Console.WriteLine("B triggered add: " + args.ToString());
};
Console.WriteLine("Add to A: " + cacheA.Add(key, "some value"));
Console.WriteLine("Add to B: " + cacheB.Add(key, "some value"));
Thread.Sleep(2000);
cacheA.Remove(key);
}
}
public class UnityInjectionExampleTarget
{
private ICacheManager<object> _cache;
public UnityInjectionExampleTarget(ICacheManager<object> cache)
{
_cache = cache ?? throw new ArgumentNullException(nameof(cache));
}
public void GetSomething()
{
var value = _cache.Get("myKey");
var x = value;
if (value == null)
{
throw new InvalidOperationException();
}
}
public void PutSomethingIntoTheCache()
{
_cache.Put("myKey", "something");
}
}
}