StackExchange.Redis 之 hash 类型示例
每天努力进步一点点 人气:1StackExchange.Redis 的组件封装示例网上有很多，自行百度搜索即可。
这里只演示如何使用Hash类型操作数据：
1 // 在 hash 中存入或修改一个值 并设置order_hashkey有效期1分钟，过期自动删除；null为不过期
2 stopwatch.Start();
3 var isok = RedisCacheHelper.Instance.HashSet("order_hashkey", "order_hashfield", "10", TimeSpan.FromMinutes(1));
4 stopwatch.Stop();
5 Console.WriteLine("在hash中存入一个值消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
1 //判断该字段是否存在 hash 中
2 var isexists = RedisCacheHelper.Instance.HashExists("order_hashkey", "order_hashfield");
3 Console.WriteLine("判断该字段是否存在hash中：" + isexists); //返回 True 或 False
//从hash中移除指定字段
var isdel = RedisCacheHelper.Instance.HashDelete("order_hashkey", "order_hashfield");
Console.WriteLine("从hash中移除指定字段：" + isdel); //返回 True 或 False
//从hash中递增 默认按1递增
var getincre = RedisCacheHelper.Instance.HashIncrement("order_hashkey", "order_hashfield");
Console.WriteLine("从hash中递增：" + getincre); //返递增后的值 11
//从hash中递减 默认按1递减
var getdecre = RedisCacheHelper.Instance.HashDecrement("order_hashkey", "order_hashfield");
Console.WriteLine("从hash中递减：" + getdecre); //返递减后的值 10
//保存一个字符串类型集合
string[] strarray = { "1", "2", "3", "4", "5" };
RedisCacheHelper.Instance.HashSetList("orderlist_hashkey", strarray, m => { return "hashfield_" + m.ToString(); }, new TimeSpan(0, 0, 50));
//从数据库获取10条数据
stopwatch.Start();
var getlist = TestRedis.GetOrderFormAll(10);
stopwatch.Stop();
Console.WriteLine("从数据库获取10条数据消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
//保存多个对象集合 非序列化
stopwatch.Start();
RedisCacheHelper.Instance.HashSetObjectList("objlist_hashkey", getlist, r => { return r.ordercode.ToString(); }, 1);
stopwatch.Stop();
Console.WriteLine("将10条数据存入HashRedis 消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
//保存或修改一个hash对象（序列化） 对key设置过期时间有时候起作用，有时候不起作用
stopwatch.Start();
RedisCacheHelper.Instance.HashSet<OrderForm>("orderform_hashkey", "orderform_hashfield", getlist.FirstOrDefault(), new TimeSpan(0, 0, 10), 2);
stopwatch.Stop();
Console.WriteLine("保存或修改一个hash对象（序列化）消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
//保存Hash对象集合 序列化 对key设置过期时间可以起作用
stopwatch.Start();
RedisCacheHelper.Instance.HashSet<OrderForm>("orderformlist_hashkey", getlist, m=> { return m.ordercode.ToString(); }, new TimeSpan(0, 0, 30), 3);
stopwatch.Stop();
Console.WriteLine("保存Hash对象集合（序列化）消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
//从Hash Redis获取某一条订单信息 反序列化
stopwatch.Start();
var getorderinfo = RedisCacheHelper.Instance.HashGet<OrderForm>("orderform_hashkey", "orderform_hashfield", 2);
stopwatch.Stop();
Console.WriteLine("从Hash Redis获取某一条订单信息消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
Console.WriteLine(getorderinfo.ordercode);
Console.WriteLine(getorderinfo.Area);
Console.WriteLine(getorderinfo.City);
Console.WriteLine(getorderinfo.Province);
Console.WriteLine(getorderinfo.PostTime);
//根据hashkey 获取所有的值 反序列化
stopwatch.Start();
var getorderlist = RedisCacheHelper.Instance.HashGetAll<OrderForm>("orderformlist_hashkey", 3);
stopwatch.Stop();
Console.WriteLine("根据hashkey 获取所有的值消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
foreach (var item in getorderlist)
{
Console.WriteLine("获取反序列化得到的ordercode: " + item.ordercode);
}
//根据hashkey获取单个字段hashField的值
stopwatch.Start();
var getvalue = RedisCacheHelper.Instance.HashGet("objlist_hashkey1", "City", 1);
stopwatch.Stop();
Console.WriteLine("获取单个字段hashField的值消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
Console.WriteLine("获取City: " + getvalue);
Console.WriteLine("------------------");
Console.WriteLine();
//获取多个字段hashField的值
List<RedisValue> fieldlist = new List<RedisValue>() { "ordercode", "Province", "City", "Area" };
stopwatch.Start();
var getlist = RedisCacheHelper.Instance.HashGet("objlist_hashkey1", fieldlist.ToArray(), 1);
stopwatch.Stop();
Console.WriteLine("获取多个字段hashField的值消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
foreach (var item in getlist)
{
Console.WriteLine("获取到的值: " + item);
}
//根据hashkey返回所有的HashFiled
stopwatch.Start();
var getkeylist = RedisCacheHelper.Instance.HashKeys("objlist_hashkey1", 1);
stopwatch.Stop();
Console.WriteLine("消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
foreach (var item in getkeylist)
{
Console.WriteLine("获取到的HashFiled: " + item);
}
//根据hashkey返回所有HashFiled值
stopwatch.Start();
var getvaluelist = RedisCacheHelper.Instance.HashValues("objlist_hashkey1", 1);
stopwatch.Stop();
Console.WriteLine("消耗时间：" + stopwatch.ElapsedMilliseconds.ToString());
foreach (var item in getvaluelist)
{
Console.WriteLine("获取到的HashFiled值: " + item);
}
这里附上RedisHelp
/// <summary>
/// 判断该字段是否存在 hash 中
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <returns></returns>
public bool HashExists(string redisKey, string hashField, int db = -1)
{
try
{
_db = GetDatabase(db);
return _db.HashExists(redisKey, hashField);
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 从 hash 中移除指定字段
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <returns></returns>
public bool HashDelete(string redisKey, string hashField, int db = -1)
{
try
{
_db = GetDatabase(db);
return _db.HashDelete(redisKey, hashField);
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 从 hash 中移除多个指定字段
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <returns></returns>
public long HashDelete(string redisKey, IEnumerable<RedisValue> hashField, int db = -1)
{
try
{
_db = GetDatabase(db);
return _db.HashDelete(redisKey, hashField.ToArray());
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 递增 默认按1递增 可用于计数
/// </summary>
/// <param name="key"></param>
/// <param name="span"></param>
/// <param name="db"></param>
/// <returns></returns>
public long HashIncrement(string redisKey, string hashField, TimeSpan? span = null, int db = -1)
{
try
{
_db = GetDatabase(db);
var result = _db.HashIncrement(redisKey, hashField);
//设置过期时间
if (span != null)
{
this.KeyExpire(redisKey, span);
}
return result;
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 递减 默认按1递减 可用于抢购类的案例
/// </summary>
/// <param name="key"></param>
/// <param name="span"></param>
/// <param name="db"></param>
/// <returns></returns>
public long HashDecrement(string redisKey, string hashField, TimeSpan? span = null, int db = -1)
{
try
{
_db = GetDatabase(db);
var result = _db.HashDecrement(redisKey, hashField);
//设置过期时间
if (span != null)
{
this.KeyExpire(redisKey, span);
}
return result;
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 在 hash 中保存或修改一个值 字符类型
/// set or update the HashValue for string key
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <param name="value"></param>
/// <param name="span">过期时间,可空</param>
/// <returns></returns>
public bool HashSet(string redisKey, string hashField, string value, TimeSpan? span = null, int db = -1)
{
try
{
_db = GetDatabase(db);
if (span != null)
{
//设置过期时间
this.KeyExpire(redisKey, span);
}
return _db.HashSet(redisKey, hashField, value);
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 保存一个字符串类型集合
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="redisKey">Redis Key</param>
/// <param name="list">数据集合</param>
/// <param name="getFiledKey">字段key</param>
public void HashSetList(string redisKey, IEnumerable<string> list, Func<string, string> getFiledKey, TimeSpan? span = null, int db = -1)
{
try
{
_db = GetDatabase(db);
List<HashEntry> listHashEntry = new List<HashEntry>();
foreach (var item in list)
{
listHashEntry.Add(new HashEntry(getFiledKey(item), item));
}
_db.HashSet(redisKey, listHashEntry.ToArray());
if (span != null)
{
//设置过期时间
this.KeyExpire(redisKey, span);
}
}
catch (Exception ex)
{
throw;
}
}
/// <summary>
/// 保存多个对象集合 非序列化
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="tableName">表名前缀</param>
/// <param name="list">数据集合</param>
/// <param name="getModelId">字段key</param>
public void HashSetObjectList<T>(string tableName, IEnumerable<T> list, Func<T, string> getModelId, int db = -1) where T : class
{
try
{
_db = GetDatabase(db);
foreach (var item in list)
{
List<HashEntry> listHashEntry = new List<HashEntry>();
Type t = item.GetType();//获得该类的Type
foreach (PropertyInfo pi in t.GetProperties())
{
string name = pi.Name; //获得属性的名字,后面就可以根据名字判断来进行些自己想要的操作
var value = pi.GetValue(item, null); //用pi.GetValue获得值
listHashEntry.Add(new HashEntry(name, value.ToString()));
}
_db.HashSet(tableName + getModelId(item), listHashEntry.ToArray());
}
}
catch (Exception ex)
{
throw;
}
}
/// <summary>
/// 保存或修改一个hash对象（序列化）
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool HashSet<T>(string redisKey, string hashField, T value, TimeSpan? span = null, int db = -1) where T : class
{
try
{
_db = GetDatabase(db);
var json = JsonConvert.SerializeObject(value);
if (span != null)
{
//设置过期时间
this.KeyExpire(redisKey, span);
}
return _db.HashSet(redisKey, hashField, json);
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 保存Hash对象集合 序列化
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="redisKey">Redis Key</param>
/// <param name="list">数据集合</param>
/// <param name="getModelId"></param>
public void HashSet<T>(string redisKey, IEnumerable<T> list, Func<T, string> getModelId, TimeSpan? span = null, int db = -1) where T : class
{
try
{
_db = GetDatabase(db);
List<HashEntry> listHashEntry = new List<HashEntry>();
foreach (var item in list)
{
string json = JsonConvert.SerializeObject(item);
listHashEntry.Add(new HashEntry(getModelId(item), json));
}
_db.HashSet(redisKey, listHashEntry.ToArray());
if (span != null)
{
//设置过期时间
this.KeyExpire(redisKey, span);
}
}
catch (Exception ex)
{
throw;
}
}
/// <summary>
/// 从 hash 中获取对象（反序列化）
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <returns></returns>
public T HashGet<T>(string redisKey, string hashField, int db = -1) where T : class
{
try
{
_db = GetDatabase(db);
return JsonConvert.DeserializeObject<T>(_db.HashGet(redisKey, hashField));
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 根据hashkey获取所有的值 序列化
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="redisKey"></param>
/// <param name="db"></param>
/// <returns></returns>
public List<T> HashGetAll<T>(string redisKey, int db = -1) where T : class
{
List<T> result = new List<T>();
try
{
_db = GetDatabase(db);
HashEntry[] arr = _db.HashGetAll(redisKey);
foreach (var item in arr)
{
if (!item.Value.IsNullOrEmpty)
{
var t = JsonConvert.DeserializeObject<T>(item.Value);
if (t != null)
{
result.Add(t);
}
}
}
}
catch (Exception)
{
throw;
}
return result;
}
/// <summary>
/// 根据hashkey获取所有的值 非序列化
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="redisKey"></param>
/// <param name="db"></param>
/// <returns></returns>
public IEnumerable<Dictionary<RedisValue, RedisValue>> HashGetAll(IEnumerable<string> redisKey, int db = -1)
{
List<Dictionary<RedisValue, RedisValue>> diclist = new List<Dictionary<RedisValue, RedisValue>>();
try
{
_db = GetDatabase(db);
foreach (var item in redisKey)
{
HashEntry[] arr = _db.HashGetAll(item);
foreach (var he in arr)
{
Dictionary<RedisValue, RedisValue> dic = new Dictionary<RedisValue, RedisValue>();
if (!he.Value.IsNullOrEmpty)
{
dic.Add(he.Name, he.Value);
}
diclist.Add(dic);
}
}
}
catch (Exception)
{
throw;
}
return diclist;
}
/// <summary>
/// 根据hashkey获取单个字段hashField的值
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <returns></returns>
public RedisValue HashGet(string redisKey, string hashField, int db = -1)
{
try
{
_db = GetDatabase(db);
return _db.HashGet(redisKey, hashField);
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 根据hashkey获取多个字段hashField的值
/// </summary>
/// <param name="redisKey"></param>
/// <param name="hashField"></param>
/// <returns></returns>
public RedisValue[] HashGet(string redisKey, RedisValue[] hashField, int db = -1)
{
_db = GetDatabase(db);
return _db.HashGet(redisKey, hashField);
}
/// <summary>
/// 根据hashkey返回所有的HashFiled
/// </summary>
/// <param name="redisKey"></param>
/// <returns></returns>
public IEnumerable<RedisValue> HashKeys(string redisKey, int db = -1)
{
_db = GetDatabase(db);
return _db.HashKeys(redisKey);
}
/// <summary>
/// 根据hashkey返回所有HashValue值
/// </summary>
/// <param name="redisKey"></param>
/// <returns></returns>
public RedisValue[] HashValues(string redisKey, int db = -1)
{
_db = GetDatabase(db);
return _db.HashValues(redisKey);
}
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