Problem
Repeated access to info held in a data store.
Cached data to be consistent with data in the data store.
Solution
Caching systems provide read-through and write-through/write-behind operations.
Determine whether the item is currently held in the cache.
If the item is not currently in the cache, read the item from the data store.
Store a copy of the item in the cache.
Caching in practice
private static ConnectionMultiplexer Connection;
// Redis connection string information
private static Lazy<ConnectionMultiplexer> lazyConnection = new Lazy<ConnectionMultiplexer>(() =>
{
string cacheConnection = ConfigurationManager.AppSettings["CacheConnection"].ToString();
return ConnectionMultiplexer.Connect(cacheConnection);
});
public static ConnectionMultiplexer Connection => lazyConnection.Value;