/// <summary>
/// Gets the specified cacheKey async.
/// </summary>
/// <returns>The async.</returns>
/// <param name="cacheKey">Cache key.</param>
/// <typeparam name="T">The 1st type parameter.</typeparam>
public async Task <CacheValue <T> > GetAsync <T>(string cacheKey)
{
ArgumentCheck.NotNullOrWhiteSpace(cacheKey, nameof(cacheKey));
var cacheValue = await _localCache.GetAsync <T>(cacheKey);
if (cacheValue.HasValue)
{
return(cacheValue);
}
LogMessage($"local cache can not get the value of {cacheKey}");
try
{
cacheValue = await _distributedCache.GetAsync <T>(cacheKey);
}
catch (Exception ex)
{
LogMessage($"distributed cache get error, [{cacheKey}]", ex);
}
if (cacheValue.HasValue)
{
TimeSpan ts = TimeSpan.Zero;
try
{
ts = await _distributedCache.GetExpirationAsync(cacheKey);
}
catch
{
}
if (ts <= TimeSpan.Zero)
{
ts = TimeSpan.FromSeconds(_options.DefaultExpirationForTtlFailed);
}
await _localCache.SetAsync(cacheKey, cacheValue.Value, ts);
return(cacheValue);
}
LogMessage($"distributed cache can not get the value of {cacheKey}");
return(CacheValue <T> .NoValue);
}
protected virtual async Task GetExpiration_Async_Should_Succeed()
{
var cacheKey = $"{_nameSpace}{Guid.NewGuid().ToString()}";
var cacheValue1 = "value1";
await _provider.SetAsync(cacheKey, cacheValue1, _defaultTs);
var ts = await _provider.GetExpirationAsync(cacheKey);
Assert.InRange(ts, TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(30 + 120));
}
public async Task <TimeSpan> GetExpirationAsync(string cacheKey)
{
var ts = await _localCache.GetExpirationAsync(cacheKey);
if (ts > TimeSpan.Zero)
{
return(ts);
}
try
{
ts = await _distributedCache.GetExpirationAsync(cacheKey);
}
catch (Exception ex)
{
_logger?.LogError(ex, "Error getting expiration for cache key = '{0}'.", cacheKey);
return(TimeSpan.Zero);
}
return(ts);
}
private async Task <TimeSpan> GetExpirationAsync(string cacheKey)
{
TimeSpan ts = TimeSpan.Zero;
try
{
ts = await _distributedCache.GetExpirationAsync(cacheKey);
}
catch
{
}
if (ts <= TimeSpan.Zero)
{
ts = TimeSpan.FromSeconds(_options.DefaultExpirationForTtlFailed);
}
return(ts);
}
/// <summary>
/// Gets the exporation of specify cachekey async.
/// </summary>
/// <param name="cacheKey">Cache key.</param>
/// <param name="cancellationToken">cancellationToken</param>
/// <returns>Expiration in TimeSpan</returns>
public Task <TimeSpan> GetExpirationAsync(string cacheKey, CancellationToken cancellationToken = default)
{
return(_easyCachingProvider.GetExpirationAsync(cacheKey));
}
public async Task GetExpirationAsync_LocalExpirationEqualsZero_ReturnsDistributedExpiration()
{
var(hybridProvider, fakeLocalProvider, fakeDistributedProvider) = CreateFakeHybridProvider();
var localExpiration = TimeSpan.Zero;
var distributeExpiration = TimeSpan.FromMinutes(5);
var cacheKey = GetUniqueCacheKey();
A.CallTo(() => fakeLocalProvider.GetExpirationAsync(cacheKey)).Returns(localExpiration);
A.CallTo(() => fakeDistributedProvider.GetExpirationAsync(cacheKey)).Returns(distributeExpiration);
var ts = await hybridProvider.GetExpirationAsync(cacheKey);
Assert.Equal(ts, distributeExpiration);
}
