通过keys进行模糊查询后的批量操作
var redis = ConnectionMultiplexer.Connect("127.0.0.1:6379,allowAdmin = true");
redis.GetDatabase().ScriptEvaluate(LuaScript.Prepare(
//Redis的keys模糊查询：
" local ks = redis.call('KEYS', @keypattern) " + //local ks为定义一个局部变量，其中用于存储获取到的keys
" for i=1,#ks,5000 do " + //#ks为ks集合的个数, 语句的意思： for(int i = 1; i <= ks.Count; i+=5000)
" redis.call('del', unpack(ks, i, math.min(i+4999, #ks))) " + //Lua集合索引值从1为起始，unpack为解包，获取ks集合中的数据，每次5000，然后执行删除
" end " +
" return true "
),
new { keypattern = "mykey*" });
对Hash集合下的key进行模糊查询后的批量操作
redis.GetDatabase().ScriptEvaluate(LuaScript.Prepare(
" local ks = redis.call('hkeys', @hashid) " +
" local fkeys = {} " +
" for i=1,#ks do " +
//使用string.find进行匹配操作
" if string.find(ks[i], @keypattern) then " +
" fkeys[#fkeys + 1] = ks[i] " +
" end " +
" end " +
" for i=1,#fkeys,5000 do " +
" redis.call('hdel', @hashid, unpack(fkeys, i, math.min(i+4999, #fkeys))) " +
" end " +
" return true "
),
new { hashid = "hkey", keypattern = "^mykey" }); //keypattern为可使用正则表达式
或
redis.GetDatabase().ScriptEvaluate(LuaScript.Prepare(
" local ks = redis.call('hkeys', @hashid) " +
" local fkeys = {} " +
" for i=1,#ks do " +
" if string.find(ks[i], @keypattern) then " +
" fkeys[#fkeys + 1] = ks[i] " +
" end " +
" end " +
" for i=1,#fkeys do " +
" redis.call('hset', @hashid, fkeys[i], @value) " +
" end " +
" return true "
),
new { hashid = "hkey", keypattern = "^key", value = "hashValue" }); //keypattern为可使用正则表达式
对Set集合下的值进行模糊查询后的批量操作
redis.GetDatabase().ScriptEvaluate(LuaScript.Prepare(
" local ks = redis.call('smembers', @keyid) " +
" local fkeys = {} " +
" for i=1,#ks do " +
" if string.find(ks[i], @keypattern) then " +
" fkeys[#fkeys + 1] = ks[i] " +
" end " +
" end " +
" for i=1,#fkeys,5000 do " +
" redis.call('srem', @keyid, unpack(fkeys, i, math.min(i+4999, #fkeys))) " +
" end " +
" return true "
),
new { keyid = "setkey", keypattern = "^myval" }); //keypattern为可使用正则表达式
注意
从 Redis 2.6.0 版本开始，才可通过内置的 Lua 解释器，使用 EVAL 命令对 Lua 脚本进行求值。