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@lgolubyev
Created Jun 2, 2022
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// when using `services.AddMemoryCache(options => options.TrackStatistics = true);` to instantiate
[EventSource(Name = "Microsoft-Extensions-Caching-Memory")]
internal sealed class CachingEventSource : EventSource
{
public CachingEventSource(IMemoryCache memoryCache) { _memoryCache = memoryCache; }
protected override void OnEventCommand(EventCommandEventArgs command)
{
if (command.Command == EventCommand.Enable)
{
if (_cacheHitsCounter == null)
{
_cacheHitsCounter = new PollingCounter("cache-hits", this, () =>
_memoryCache.GetCurrentStatistics().CacheHits)
{
DisplayName = "Cache hits",
};
}
}
}
}
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