public TodoCache(ILogger logger, TimeSpan?expireAfter = null, int?limitSizeTo = null)
{
this.logger = logger;
this.SourceCache = new SourceCache <TodoDto, int>(t => t.Id);
// Expiration time
if (expireAfter.HasValue)
{
SourceCache.ExpireAfter(u => expireAfter.Value, TimeSpan.FromSeconds(expireAfter.Value.TotalSeconds / 10))
.Subscribe(x => logger.LogInformation("SourceCache Expiration: {0} filled trades have been removed from memory", x.Count()));
}
// Limit size
if (limitSizeTo.HasValue)
{
SourceCache.LimitSizeTo(limitSizeTo.Value)
.Subscribe(x => logger.LogInformation("SourceCache LimitSize: {0} filled trades have been removed from memory", x.Count()));
}
// Shared object
SharedCache = SourceCache.Connect()
.WhereReasonsAre(ChangeReason.Add, ChangeReason.Moved, ChangeReason.Refresh, ChangeReason.Update, ChangeReason.Remove)
.Transform(w => new DataTracker <TodoDto>(w, null))
.ForEachChange(e =>
{
e.Current.Reason = e.Reason;
e.Current.Updated = DateTime.Now;
})
.AsObservableCache();
}