Varnish4 Configure manual Purge cache

Varnish4 clear caching methods are mainly, through Varnishadm management, or VCL configuration.

The VCL configuration allows the client to manually request a clear cache to ensure that local data is updated in a timely manner without restarting the varnish server.

Configuration method:

#允许清除缓存IP集acl purge_ip{"127.0.0.1"; "LocalHost";} Sub Vcl_recv {if (req.method ~ "Update") {if (client.ip ~ purge_ip) {return (purge);//Clear Cache} retur   N (Synth (404, "not Found")); }}sub vcl_purge{return (synth, "success");}

After restarting varnish, open Firefox browser, go to a cache page, right-click to view the source code, and then select the network.

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Click the first request message.

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Click Edit and re-send

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Modify the request type to PURGE and click Send

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Review the return status and, if successful, clear the cache, press F5 to refresh the page and view the new content.

Note: VARNISH4 is not configured in the same way as VARNISH3, so this configuration can only be used in the same way as VARNISH4,VARNISH3, which is used in Vcl_hit purge; The command then returns an error of "success", VCL_RECV should use return (lookup), and then do not forget to add reg.request== "PURGE" judgment.

This article is from the "gangbusters" blog, make sure to keep this source http://php2012web.blog.51cto.com/5585213/1686810

Varnish4 Configure manual Purge cache