/// <summary>
/// Creates a new <see cref="FusionCache"/> instance.
/// </summary>
/// <param name="optionsAccessor">The set of cache-wide options to use with this instance of <see cref="FusionCache"/>.</param>
/// <param name="memoryCache">The <see cref="IMemoryCache"/> instance to use. If null, one will be automatically created and managed.</param>
/// <param name="logger">The <see cref="ILogger{TCategoryName}"/> instance to use. If null, logging will be completely disabled.</param>
/// <param name="reactor">The <see cref="IFusionCacheReactor"/> instance to use (advanced). If null, a standard one will be automatically created and managed.</param>
public FusionCache(IOptions <FusionCacheOptions> optionsAccessor, IMemoryCache?memoryCache = null, ILogger <FusionCache>?logger = null, IFusionCacheReactor?reactor = null)
{
if (optionsAccessor is null)
{
throw new ArgumentNullException(nameof(optionsAccessor));
}
// OPTIONS
_options = optionsAccessor.Value ?? throw new ArgumentNullException(nameof(optionsAccessor.Value));
// LOGGING
if (logger is NullLogger <FusionCache> )
{
// IGNORE NULL LOGGER (FOR BETTER PERF)
_logger = null;
}
else
{
_logger = logger;
}
// REACTOR
_reactor = reactor ?? new FusionCacheReactorStandard();
// MEMORY CACHE
_mca = new MemoryCacheAccessor(memoryCache, _options, _logger);
// DISTRIBUTED CACHE
_dca = null;
}
/// <summary>
/// Release all resources managed by FusionCache.
/// </summary>
/// <param name="disposing">Indicates if the disposing is happening.</param>
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
_reactor.Dispose();
_mca.Dispose();
}
#pragma warning disable CS8625 // Cannot convert null literal to non-nullable reference type.
_mca = null;
#pragma warning restore CS8625 // Cannot convert null literal to non-nullable reference type.
disposedValue = true;
}
}