我正在研究是否可以使用Varnish来加速REST API。
基本上,我想在很长一段时间内缓存GET
个请求。但是,当收到PUT
/ POST
/ DELETE
请求时,我想解析URL,并根据我找到的信息,我想清除缓存条目。
例如:
GET /documents/:docType // return document list for specified docType
DELETE /document/:docType/:docId // delete a document
GET /documents/A0 <-- cached
GET /documents/A1 <-- cached
DELETE /document/A0/333 <-- first entry is purged
我可以用VCL实现这个目标吗?
答案 0 :(得分:0)
我建议用varnish tutorial entry解释清除和禁令。
清除时应该小心,因为不应该让每个人都清除网址。
为了做到这一点,你应该做类似的事情:
# IPs allowed to purge
acl purgeIps {
"localhost";
"192.168.55.0"/24;
}
然后在你的vcl_recv中你必须决定何时清除/禁止:
if (req.request == "PUT" ||
req.request == "POST" ||
req.request == "DELETE"){
if (!client.ip ~ purgeIps) {
error 405 "Not allowed.";
}
purge; #I'm not sure if purge can be done here, if it doesn't work you should use it in vcl_hit and vcl_miss
# Also, if purge does not work here you should change this line for return(lookup);
error 200 "Purged";
}
Here您可以找到有关禁止和清除的更多示例