public void Set(string key, byte[] value, DistributedCacheEntryOptions options)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
var creationTime = DateTimeOffset.UtcNow;
var absoluteExpiration = GetAbsoluteExpiration(creationTime, options);
var result = _redisClient.Eval(SetScript, key,
new object[]
{
absoluteExpiration?.Ticks ?? NotPresent,
options.SlidingExpiration?.Ticks ?? NotPresent,
GetExpirationInSeconds(creationTime, absoluteExpiration, options) ?? NotPresent,
value
});
}
/// <summary>
/// 释放分布式锁。https://github.com/2881099/csredis/blob/master/src/CSRedisCore/CSRedisClient.cs
/// </summary>
/// <returns>成功/失败</returns>
public bool Unlock(string name, string value)
{
return(_redisClient.Eval(@"local gva = redis.call('GET', KEYS[1])
if gva == ARGV[1] then
redis.call('DEL', KEYS[1])
return 1
end
return 0", name, value)?.ToString() == "1");
}
//https://www.cnblogs.com/additwujiahua/p/11479303.html
/// <summary>
/// 批处理模糊查询
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
internal static object BatchFuzzyQuery(string key)
{
try
{
var lau = @" local array = {" + key + "}" +
@" local t = { }" +
@" for iter, value in ipairs(array) do" +
@" local key = redis.call('keys', '*_'..value..'_*');" +
@" if #key>0 then" +
@" table.insert(t,key[1])" +
@" end " +
@" end " +
@" return redis.call('mget', unpack(t))";
return(_redisManager.Eval(lau, "", ""));
}
catch (Exception)
{
return(null);
}
}
/// <summary>
/// 解锁
/// </summary>
/// <param name="client">redis客户端连接</param>
/// <param name="key">锁key</param>
/// <param name="selfMark">对应加锁客户端标识</param>
/// <returns></returns>
public static bool M5_UnLock(this CSRedisClient client, string key, string selfMark)
{
var script = @"local getLock = redis.call('GET', KEYS[1])
if getLock == ARGV[1] then
redis.call('DEL', KEYS[1])
return 1
end
return 0";
return(client.Eval(script, key, selfMark)?.ToString() == "1");
}
/// <summary>
/// 加锁毫秒级
/// </summary>
/// <param name="client">redis客户端连接</param>
/// <param name="key">锁key</param>
/// <param name="value">锁值</param>
/// <param name="expireMilliSeconds">缓存时间 单位/毫秒 默认1000毫秒</param>
/// <returns></returns>
public static bool M5_LockPE(this CSRedisClient client, string key, object value, int expireMilliSeconds = 1000)
{
var script = @"local isNX = redis.call('SETNX', KEYS[1], ARGV[1])
if isNX == 1 then
redis.call('PEXPIRE', KEYS[1], ARGV[2])
return 1
end
return 0";
return(client.Eval(script, key, value, expireMilliSeconds)?.ToString() == "1");
}
/*
* 也可以使用CSRedisClient内置方法 lock 和 unlock
*/
/// <summary>
/// 加锁
/// </summary>
/// <param name="client">redis客户端连接</param>
/// <param name="key">锁key</param>
/// <param name="value">锁值</param>
/// <param name="expireSeconds">缓存时间 单位/秒 默认1秒</param>
/// <returns></returns>
public static bool M5_Lock(this CSRedisClient client, string key, object value, int expireSeconds = 1)
{
//注意未设置锁的过期时间不解锁就成了死锁了
var script = @"local isNX = redis.call('SETNX', KEYS[1], ARGV[1])
if isNX == 1 then
redis.call('EXPIRE', KEYS[1], ARGV[2])
return 1
end
return 0";
return(client.Eval(script, key, value, expireSeconds)?.ToString() == "1");
}
