public async Task <Dictionary <TKey, TEntity> > GetMany(IEnumerable <TKey> keys, CancellationToken cancellationToken = default)
{
var tasks = keys.Distinct().Select(key => TryGet(key, cancellationToken)).ToArray();
var entities = await Task.WhenAll(tasks).ConfigureAwait(false);
var result = new Dictionary <TKey, TEntity>();
foreach (var entity in entities)
{
if (entity != null !)
{
result.Add(KeyExtractor.Invoke(entity), entity);
}
}
return(result);
}
public IEnumerable <Key> ExtractKeys(T target)
{
return(KeyExtractor.Invoke(target));
}
public IReadOnlyCollection <Key> ExtractKeys(T target)
{
return(KeyExtractor.Invoke(target));
}