多用户上,只请允许一个用户访问某个页面
多用户下,只请允许一个用户访问某个页面。
我ajax 来访问A.php页面,但是又会有很多人会调用到这个ajax来访问到这个A.php页面,请问。怎么来保证在某个时间内,只允许某个用户来访问到a.php,也就不充许多个用户来访问一个文件。
------解决方案--------------------
可能性存在,但需求不合理
互联网就是为公众服务的,为何要限定只给个人
------解决方案--------------------
a.php执行一开始检查memcache原子+1,结束时候memcache原子-1.
如果memcache加1返回1,那么说明是第一个用户,可以访问.
如果memcache加1>1,那么不是第一用户,拒绝。
------解决方案--------------------
------解决方案--------------------
看看能不能使用生文件的方式,不过那样子应该会比较损硬盘吧。。。对硬盘擦写太频繁了,我自己简单想到的法子而已,别拍砖啊~~~

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