Home Generic repository - return Task or async Task?
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Generic repository - return Task or async Task?

user1299 Published in April 26, 2018, 1:45 pm

This question already has an answer here:

  • Should I use async if I'm returning a Task and not awaiting anything 2 answers

I'm just working on generic repository and I found this sample https://cpratt.co/truly-generic-repository/

I've noticed that some of methods return async Task and some just Task.


public virtual Task<bool> GetExistsAsync(Expression<Func<TEntity, bool>> filter = null)
    return GetQueryable(filter).AnyAsync();


public virtual async Task<TEntity> GetByIdAsync(object id)
    return await dbSet.FindAsync(id);

What's the preference? I have read quite a lot about it and I've seen recommendation to await only if I do something else after await keyword -> this would mean that GetByIdAsync shouldn't have async/await but then it won't be asynchronous method.

If it won't be asynchronous method then what's the benefit of returning just Task like in GetExistsAsync?

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