public async Task <IPagedList <Vacancy> > GetVacancies(int page = 1, int pageSize = 10)
{
var key = $"vacancy{page}_{pageSize}";
var result = _cache.Get(key) as IPagedList <Vacancy>;
if (result == null)
{
var items = await _repository.GetVacancies(page, pageSize);
var totalItemsCount = await _repository.GetVacanciesCount();
result = new StaticPagedList <Vacancy>(items, page, pageSize, totalItemsCount);
_cache.Set(key, result, GetMemoryCacheEntryOptions());
}
return(result);
}