/// <summary>
/// 向缓存中添加一个缓存项。
/// </summary>
/// <param name="key">表示一个缓存的键。</param>
/// <param name="value">表示一个缓存的值。</param>
/// <param name="policy">缓存使用的策略（一般是过期策略）</param>
/// <param name="region">表示缓存所属的域。</param>
/// <returns>添加成功返回 true, 失败返回 false。</returns>
public bool Add(string key, object value, Policy policy, string region = null)
{
if (string.IsNullOrWhiteSpace(key))
{
throw new ArgumentException($"parameter {nameof(key)} can not be null or empty.");
}
if (!this.IsEnabled)
{
return(false);
}
if (value == null)
{
return(false);
}
ChangeChecker checker = null;
if (policy != null)
{
checker = policy.Checker;
}
return(this.AddCore(region, key, new StoredValue()
{
Value = value,
Checker = checker
}));
}
/// <summary>
/// 添加一个新的检测器
/// </summary>
/// <param name="item"></param>
public void Add(ChangeChecker item)
{
for (int i = 0, c = this._checkers.Count; i < c; i++)
{
var checker = this._checkers[i];
if (checker.Equals(item)) return;
}
this._checkers.Add(item);
}
/// <summary>
/// 向缓存中添加一项。
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <param name="policy">缓存使用的策略（一般是过期策略）</param>
/// <param name="region"></param>
/// <returns></returns>
public bool Add(string key, object value, Policy policy, string region = null)
{
if (value == null)
{
return(false);
}
ChangeChecker checker = null;
if (policy != null)
{
checker = policy.Checker;
}
return(this.AddCore(region, key, new StoredValue()
{
Value = value,
Checker = checker
}));
}