public bool TryGetValue(string key, out object val)
{
CacheItem item = backend.Get(key);
if (item == null)
{
val = null;
return(false);
}
else
{
val = item.Value;
return(true);
}
}
public CacheItem Get(string key)
{
CacheItem ci = null;
if (data.TryGetValue(key, out ci))
{
Touch(ci);
return(ci);
}
if (fallback != null)
{
// if the fallback contains the data,
// bring it into our cache
ci = fallback.Get(key);
if (ci != null)
{
this.Set(ci);
}
}
return(null);
}
public CacheItem Get(string key)
{
FileEntry entry;
CacheItem ci;
if (data.TryGetValue(key, out entry) == false)
{
// not found, maybe the fallback has it?
if (fallback != null)
{
ci = fallback.Get(key);
if (ci != null)
{
Set(ci);
}
return(ci);
}
else
{
return(null);
}
}
ci = entry.item;
if (ci == null) // not still in memory
{
// lock the entry so that it wont get moved during Compact
lock (entry)
{
// read from disk..
ci = Deserialize(entry);
}
}
return(ci);
}
