public async Task <SawmillGeocodeRequest> LookupAsync(string value)
{
var location = locationCreator.Create(value);
if (location.Status != SawmillStatus.RequiresLookup)
{
return(location); // Failed to validate as worth looking up.
}
// Is this value already in our L1 local (memory) cache?
var cachedLocation = await level1Cache.FindByKeyAsync(location.SourceKey);
if (cachedLocation != null)
{
logger?.LogDebug((int)LogEventIds.L1CacheManagerHit, "L1 hit: '{value}'", value);
return(cachedLocation);
}
logger?.LogInformation((int)LogEventIds.L1CacheManagerMiss, "Cache miss: '{value}'", value);
// No, is it in our L2 cheap storage db?
cachedLocation = await level2Cache.FindByKeyAsync(location.SourceKey);
if (cachedLocation != null)
{
logger?.LogDebug((int)LogEventIds.L2CacheManagerHit, "L2 hit: '{value}'", value);
return(cachedLocation);
}
logger?.LogInformation((int)LogEventIds.L2CacheManagerMiss, "Cache miss: '{value}'", value);
location.Status = SawmillStatus.RequiresGeocoding;
// Cache this location in L1 (local) so we don't keep checking L2 (remote) if the same key comes up again.
await level1Cache.InsertAsync(location);
return(location);
}
