ConfigurationManager RefreshInterval vs AutomaticRefreshInterval - asp.net-mvc

Question

Can someone explain to me the difference between AutomaticRefreshInterval and RefreshInterval, i'm using ConfigurationManager in my OpenIdConnectCachingSecurityTokenProvider implementing IIssuerSecurityTokenProvider, by default AutomaticRefreshInterval is set to 5 days and RefreshInterval to 30 seconds, i can't find a clear explaination between those two values, the goal is to prevent resquesting metadata frequently and request them only after 1 hours for example, is the default configuration is ok or i have to change the RefreshInterval
My OpenIdConnectCachingSecuritytokenProvider class
public class OpenIdConnectCachingSecurityTokenProvider : IIssuerSecurityTokenProvider
{
public ConfigurationManager<OpenIdConnectConfiguration> _configManager;
private string _issuer;
private IEnumerable<SecurityToken> _tokens;
private readonly string _metadataEndpoint;
private readonly ReaderWriterLockSlim _synclock = new ReaderWriterLockSlim();
public OpenIdConnectCachingSecurityTokenProvider(string metadataEndpoint)
{
_metadataEndpoint = metadataEndpoint;
_configManager = new ConfigurationManager<OpenIdConnectConfiguration>(metadataEndpoint);
//_configManager.RefreshInterval = new TimeSpan(0,1,0);
//_configManager.AutomaticRefreshInterval
RetrieveMetadata();
}
/// <summary>
/// Gets the issuer the credentials are for.
/// </summary>
/// <value>
/// The issuer the credentials are for.
/// </value>
public string Issuer
{
get
{
RetrieveMetadata();
_synclock.EnterReadLock();
try
{
return _issuer;
}
finally
{
_synclock.ExitReadLock();
}
}
}
/// <summary>
/// Gets all known security tokens.
/// </summary>
/// <value>
/// All known security tokens.
/// </value>
public IEnumerable<SecurityToken> SecurityTokens
{
get
{
RetrieveMetadata();
_synclock.EnterReadLock();
try
{
return _tokens;
}
finally
{
_synclock.ExitReadLock();
}
}
}
private void RetrieveMetadata()
{
_synclock.EnterWriteLock();
try
{
OpenIdConnectConfiguration config = Task.Run(_configManager.GetConfigurationAsync).Result;
_issuer = config.Issuer;
_tokens = config.SigningTokens;
}
finally
{
_synclock.ExitWriteLock();
}
}
}