private async ValueTask FlagEvictionAsync(string cacheKey)
{
lock (LockObj)
{
FlaggedEvictions.Add(cacheKey);
}
await Subscriber.PublishAsync(EvictionChannel, cacheKey, CommandFlags.FireAndForget);
}
/// <inheritdoc/>
public void Register(ICacheStack cacheStack)
{
if (IsRegistered)
{
throw new InvalidOperationException($"{nameof(RedisRemoteEvictionExtension)} can only be registered to one {nameof(ICacheStack)}");
}
IsRegistered = true;
Subscriber.Subscribe(EvictionChannel)
.OnMessage(async(channelMessage) =>
{
string cacheKey = channelMessage.Message;
var shouldEvictLocally = false;
lock (LockObj)
{
shouldEvictLocally = FlaggedEvictions.Remove(cacheKey) == false;
}
if (shouldEvictLocally)
{
for (var i = 0; i < EvictFromLayers.Length; i++)
{
await EvictFromLayers[i].EvictAsync(cacheKey);
}
}
});
Subscriber.Subscribe(FlushChannel)
.OnMessage(async(channelMessage) =>
{
var shouldFlushLocally = false;
lock (LockObj)
{
shouldFlushLocally = !HasFlushTriggered;
HasFlushTriggered = false;
}
if (shouldFlushLocally)
{
for (var i = 0; i < EvictFromLayers.Length; i++)
{
await EvictFromLayers[i].FlushAsync();
}
}
});
}
