private RateResult GetLatest()
{
RateResult rates;
var nextCallTime = _memoryCacheService.GetTimeForNextCall();
if (nextCallTime > DateTime.UtcNow)
{
rates = _memoryCacheService.GetLatestFromCache();
}
else
{
try
{
rates = _rateClient.GetLatest();
_memoryCacheService.SaveLatestToCache(rates);
_memoryCacheService.UpdateTimeForNextCall();
}
catch (Exception ex)
{
rates = _memoryCacheService.GetLatestFromCache();
}
}
//save to cashe
return(rates);
}