public async Task SetAsync_RemoveAsync()
{
var key = "key";
var value = new byte[] { 0x20, 0x20, 0x20, };
var prefixedKey = $"{RedisCacheOptions.InstanceName}{key}";
await L1L2Cache.SetAsync(key, value);
Assert.Equal(
value,
await L1L2Cache.GetAsync(key));
Assert.Equal(
value,
L1Cache.Get(prefixedKey));
Assert.Equal(
value,
await L2Cache.GetAsync(key));
await L1L2Cache.RemoveAsync(key);
Assert.Null(
await L1L2Cache.GetAsync(key));
Assert.Null(
L1Cache.Get(prefixedKey));
Assert.Null(
await L2Cache.GetAsync(key));
}
public void Set_Remove()
{
var key = "key";
var value = new byte[] { 0x20, 0x20, 0x20, };
var prefixedKey = $"{RedisCacheOptions.InstanceName}{key}";
L1L2Cache.Set(key, value);
Assert.Equal(
value,
L1L2Cache.Get(key));
Assert.Equal(
value,
L1Cache.Get(prefixedKey));
Assert.Equal(
value,
L2Cache.Get(key));
L1L2Cache.Remove(key);
Assert.Null(
L1L2Cache.Get(key));
Assert.Null(
L1Cache.Get(prefixedKey));
Assert.Null(
L2Cache.Get(key));
}
/// <summary>
/// Gets a value with the given key.
/// </summary>
/// <param name="key">A string identifying the requested value.</param>
/// <param name="cancellationToken">Optional. The System.Threading.CancellationToken used to propagate notifications that the operation should be canceled.</param>
/// <returns>The System.Threading.Tasks.Task that represents the asynchronous operation, containing the located value or null.</returns>
public async Task <byte[]?> GetAsync(
string key,
CancellationToken cancellationToken = default)
{
var value = L1Cache.Get(
$"{L1L2RedisCacheOptions.KeyPrefix}{key}") as byte[];
if (value == null)
{
if (await Database.Value.KeyExistsAsync(
$"{L1L2RedisCacheOptions.KeyPrefix}{key}"))
{
var semaphore = await GetOrCreateLockAsync(
key,
null,
cancellationToken);
await semaphore.WaitAsync(cancellationToken);
try
{
var hashEntries = await GetHashEntriesAsync(key);
var distributedCacheEntryOptions = hashEntries
.GetDistributedCacheEntryOptions();
value = hashEntries.GetRedisValue();
SetMemoryCache(
key,
value,
distributedCacheEntryOptions);
SetLock(
key,
semaphore,
distributedCacheEntryOptions);
}
finally
{
semaphore.Release();
}
}
}
return(value);
}
/// <summary>
/// Gets a value with the given key.
/// </summary>
/// <param name="key">A string identifying the requested value.</param>
/// <returns>The located value or null.</returns>
public byte[]? Get(string key)
{
var value = L1Cache.Get(
$"{L1L2RedisCacheOptions.KeyPrefix}{key}") as byte[];
if (value == null)
{
if (Database.Value.KeyExists(
$"{L1L2RedisCacheOptions.KeyPrefix}{key}"))
{
var semaphore = GetOrCreateLock(
key,
null);
semaphore.Wait();
try
{
var hashEntries = GetHashEntries(key);
var distributedCacheEntryOptions = hashEntries
.GetDistributedCacheEntryOptions();
value = hashEntries.GetRedisValue();
SetMemoryCache(
key,
value,
distributedCacheEntryOptions);
SetLock(
key,
semaphore,
distributedCacheEntryOptions);
}
finally
{
semaphore.Release();
}
}
}
return(value);
}
public virtual async Task <object> Get(string key)
{
var value = await L1Cache.Get(key);
if (value != null)
{
return(value);
}
CachePolicyItem cachePolicy;
value = await L2Cache.Get(key, out cachePolicy);
if (value == null)
{
return(null);
}
//后台写入一级缓存
Background(L1Cache.Set(key, value, cachePolicy));
return(value);
}