/// <summary>
/// Set cache eviction mechanism.
/// </summary>
/// <param name="fileProvider"></param>
/// <param name="expiration">How long a cache can be inactive before it will get evicted</param>
/// <param name="checkInterval">How often to check inactive packages</param>
/// <returns></returns>
public static PackageFileProvider StartEvictTimer(this PackageFileProvider fileProvider, TimeSpan expiration, TimeSpan checkInterval)
{
EvictTimer evictMechanism = new EvictTimer(fileProvider, expiration, checkInterval);
fileProvider.AddDisposable(evictMechanism);
evictMechanism.Start();
return(fileProvider);
}
/// <summary>
/// Set cache eviction mechanism.
/// </summary>
/// <param name="fileProvider"></param>
/// <param name="options">Options that has CacheEvictTime property.</param>
/// <returns></returns>
public static PackageFileProvider StartEvictTimer(this PackageFileProvider fileProvider, IOptionsMonitor <PackageFileProviderOptionsRecord> options)
{
EvictTimer evictMechanism = new EvictTimer(
fileProvider,
expiration: () => {
double value = options.CurrentValue.CacheEvictTime;
// If value <= 0, then disable by putting expiration time to infinite
return(value <= 0 ? TimeSpan.MaxValue : TimeSpan.FromMilliseconds(options.CurrentValue.CacheEvictTime * 1000.0));
},
checkInterval: () => {
double value = options.CurrentValue.CacheEvictTime;
// If value <= 0, then check next times (the options) in 15 seconds.
return(value <= 0 ? TimeSpan.FromSeconds(15) : TimeSpan.FromMilliseconds(options.CurrentValue.CacheEvictTime * 333.0));
});
fileProvider.AddDisposable(evictMechanism);
evictMechanism.Start();
return(fileProvider);
}