public TValue TrySet(TKey key, Func <TKey, TValue> valueGetter, ICachePolicy policy)
{
_rwLock.EnterReadLock();
try {
if (_contents.TryGetValue(key, out var cached))
{
return(cached.Value);
}
}
finally {
_rwLock.ExitReadLock();
}
_rwLock.EnterWriteLock();
try {
if (_contents.TryGetValue(key, out var cached))
{
return(cached.Value);
}
cached = new CacheContent <TKey, TValue>(key, valueGetter(key), policy);
UpdateExpiryControl(cached.ExpiresAt, key);
return(cached.Value);
}
finally {
_rwLock.ExitWriteLock();
}
}
public void Set(TKey key, TValue value, ICachePolicy policy)
{
_rwLock.EnterWriteLock();
try {
var cached = new CacheContent <TKey, TValue>(key, value, policy);
if (_contents.ContainsKey(key))
{
_contents[key] = cached;
}
else
{
_contents.Add(key, cached);
}
UpdateExpiryControl(cached.ExpiresAt, key);
}
finally {
_rwLock.ExitWriteLock();
}
}