Redis的Lua

    /**
     * 通用lua脚本执行器
     *
     * @param luaStr  lua脚本
     * @param resType 返回值类型
     * @param keys    key值集合
     * @param args    参数类型集合
     * @return lua执行结果
     * @author zyh     */
    <T> T commonLuaExecute(String luaStr, Class<T> resType, List<String> keys, Object... args);

 /**
     * 机会购下单lua
        hash 结构
        flide为用户id
        keys1 map的key
        keys2 是filte 用户id
        args1 是当前使用机会数
        args2 是总使用机会数
        value为购买次数（已使用机会数）
        totalChanceCount 活动设置的总机会数
        goodsCount 本次需要使用的机会数
     * @author zyh
     */
    public static final String LUA_ADD_BUY_RECORD_ADD_FOR_CHANCE =
            "local buyCount=tonumber(redis.call('Hget',KEYS[1],KEYS[2]));" +
                    "local goodsCount=tonumber(ARGV[1])" +
                    "local totalChanceCount=tonumber(ARGV[2])" +
                    " if (buyCount == nil) then " +
                    "   if(goodsCount<=totalChanceCount) then" +
                    "       redis.call('HINCRBY',KEYS[1],KEYS[2],goodsCount)" +
                    "       return 1;" +
                    "   else " +
                    "       return 0;" +
                    "   end" +
                    " else " +
                    "   if((goodsCount+buyCount)<=totalChanceCount) then" +
                    "       redis.call('HINCRBY',KEYS[1],KEYS[2],goodsCount)" +
                    "       return 1;" +
                    "   else " +
                    "       return 0;" +
                    "   end;" +
                    " end;";