public async Task <IEnumerable <CategoryDto> > Handle(GetCategoriesQuery request,
CancellationToken cancellationToken)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
return(await _redisCacheService.GetOrSetAsync(CacheKeys.CategoriesKey, async() =>
{
Func <MainDbContext, IAsyncEnumerable <Category> > getCategoriesHandler =
EF.CompileAsyncQuery((MainDbContext context) => context.Categories.AsNoTracking());
var categories = await getCategoriesHandler(_dbContext).ToListAsync(cancellationToken);
return categories.Select(x => new CategoryDto {
Id = x.Id, Name = x.Name
});
}));
}