public async Task <List <string> > GetFirstNamesByAge(int age)
{
var cacheKey = $"GetFirstNamesByAge-age:{age}";
List <string> cachedData = null;
if (_distributedCacheConfig.DistributedCacheEnabled)
{
cachedData = await AsyncJsonCacheHelper.GetCache <List <string> >(_cacheClient, cacheKey);
}
if (cachedData == null)
{
_logger.LogInformation("Called PersonService.GetFirstNamesByAge for age {age}");
var persons = await GetPersons();
var firstNames = persons.FindAll(p => p.Age == age).Select(p => p.First).ToList();
if (_distributedCacheConfig.DistributedCacheEnabled)
{
await AsyncJsonCacheHelper.SaveCache <List <string> >(_cacheClient, cacheKey, _distributedCacheConfig.GetFirstNameByAgeExpirationSeconds, firstNames);
}
return(firstNames);
}
else
{
return(cachedData);
}
}
public async Task <List <AgeWiseGender> > GetGendersPerAge()
{
_logger.LogInformation("Called PersonService.GetGendersPerAge");
var cacheKey = $"GetGendersPerAge";
List <AgeWiseGender> cachedData = null;
if (_distributedCacheConfig.DistributedCacheEnabled)
{
cachedData = await AsyncJsonCacheHelper.GetCache <List <AgeWiseGender> >(_cacheClient, cacheKey);
}
if (cachedData == null)
{
var persons = await GetPersons();
var ageGroups = persons.GroupBy(p => p.Age);
var ageWiseGender = ageGroups
.OrderBy(g => g.Key)
.Select(g => new AgeWiseGender()
{
Age = g.Key,
NumberOfMales = g.Count(p => p.Gender == MALE),
NumberOfFemales = g.Count(p => p.Gender == FEMALE)
})
.ToList();
if (_distributedCacheConfig.DistributedCacheEnabled)
{
await AsyncJsonCacheHelper.SaveCache <List <AgeWiseGender> >(_cacheClient, cacheKey, _distributedCacheConfig.GetGenderPerAgeExpirationSeconds, ageWiseGender);
}
return(ageWiseGender);
}
else
{
return(cachedData);
}
}
private async Task <List <Person> > GetPersons()
{
_logger.LogInformation("Called PersonService.GetPerson");
var cacheKey = $"GetPersons";
var cachedData = await AsyncJsonCacheHelper.GetCache <List <Person> >(_cacheClient, cacheKey);
if (cachedData == null)
{
if (_persons == null || !_persons.Any())
{
_persons = await _personRepository.GetPersons();
}
await AsyncJsonCacheHelper.SaveCache <List <Person> >(_cacheClient, cacheKey, _distributedCacheConfig.GetPersonsExpirationSeconds, _persons);
return(_persons);
}
else
{
return(cachedData);
}
}
public async Task <string> GetFullNameById(int id)
{
_logger.LogInformation("Called PersonService.GetFullNameById for Id {id}");
var cacheKey = $"GetFullNameById-Id:{id}";
string cachedData = null;
// if(_distributedCacheConfig.DistributedCacheEnabled)
if (_distributedCacheConfig.DistributedCacheEnabled)
{
cachedData = await AsyncJsonCacheHelper.GetCache <string>(_cacheClient, cacheKey);
}
if (string.IsNullOrEmpty(cachedData))
{
var persons = await GetPersons();
var person = persons.FirstOrDefault(p => p.Id == id);
if (person != null)
{
var personFullName = $"{person.First} {person.Last}";
if (_distributedCacheConfig.DistributedCacheEnabled)
{
await AsyncJsonCacheHelper.SaveCache <string>(_cacheClient, cacheKey, _distributedCacheConfig.GetFullNameByIdExpirationSeconds, personFullName);
}
return(personFullName);
}
else
{
throw new PersonNotFoundException($"person with specified Id: { id } does not exist", id);
}
}
else
{
return(cachedData);
}
}