根据ip的hash值分配服务器
    A]ZX13JH$K)}7IAXO38PLI6.png_S9Q)~JH_%TYUOVHZ~K4[7S.png](https://cdn.nlark.com/yuque/0/2021/png/22616587/1632720652760-269231dd-0543-451b-af6b-2a5b4de251ec.png#clientId=u2bc48bd9-3fa4-4&from=paste&height=203&id=u1cae5490&margin=%5Bobject%20Object%5D&name=_S9Q%29~JH_%25TYUOVHZ~K4%5B7S.png&originHeight=405&originWidth=548&originalType=binary&ratio=1&size=111776&status=done&style=none&taskId=uc442f770-5cf7-4127-88d1-9eef7fb6eb1&width=274)<br />![5GQ%%}_(N8{@OTWP]E3``P4.pngip不同却一样，因为hash算法，在softwaresrc/models/
    ![{5)_ESTG{WK@]GKMO[PA[R.png](https://cdn.nlark.com/yuque/0/2021/png/22616587/1632720798238-7381f81c-1574-4d80-bc0b-bf480a8df165.png#clientId=u2bc48bd9-3fa4-4&from=paste&height=229&id=u0905d168&margin=%5Bobject%20Object%5D&name=%7B5%29_EST%60G%7BWK%40%5DGKMO%5BPA%5BR.png&originHeight=457&originWidth=915&originalType=binary&ratio=1&size=70246&status=done&style=none&taskId=u228f8bf0-b54c-4598-80d5-62b798c3879&width=457.5)<br />注意:虽然可以保证用户会话在一个tomcat里卖弄，但是用户ip会变的，同一个用户，会测试大里昂破坏性的<br />注意使用！！！不能直接删除服务器，用down<br />![Z~[ZD5B89NAM2]N5DF3W.png](https://cdn.nlark.com/yuque/0/2021/png/22616587/1632721012828-815c502c-4d30-4796-aa7c-41854339730d.png#clientId=u2bc48bd9-3fa4-4&from=paste&height=154&id=u3b3d7eea&margin=%5Bobject%20Object%5D&name=Z~%5BZ%60D5B89NAM2%5DN5D%60F%603W.png&originHeight=308&originWidth=769&originalType=binary&ratio=1&size=67337&status=done&style=none&taskId=u52bb47f5-8da0-484d-88ba-93986c9aa57&width=384.5)

    hash算法带来的问题
    51[10AF[4FIUC2FDS35S7X1.png](https://cdn.nlark.com/yuque/0/2021/png/22616587/1632721090159-790b1684-be65-4029-af13-baf3c48c89aa.png#clientId=u2bc48bd9-3fa4-4&from=paste&height=257&id=u9c1e5b0f&margin=%5Bobject%20Object%5D&name=51%5B10AF%5B4FIUC2FDS35S7X1.png&originHeight=514&originWidth=1380&originalType=binary&ratio=1&size=151839&status=done&style=none&taskId=u1c5ce9d7-e8cd-4f72-b0b8-dbbc15dded9&width=690)<br />膜数问题<br />**解决普通hash算法带的问题：：一致性哈希算法**<br />**环，顺时针保证绝大用户访问原来点**<br />![5TBSR]]S88YNEA8])XH4U6B.pngAQ5CZ]8RNTYNPGXC_P7]OB4.png