Purging and banning — Varnish version trunk documentation
Purging and banning — Varnish version trunk documentation
Extracted Page: https://www.varnish-cache.org/docs/trunk/tutorial/purging.html
Purging and banning — Varnish version trunk documentationOne of the most effective way of increasing your hit ratio is to increase the time-to-live (ttl) of your objects. But, as you're aware of, in this twitterific day of age serving content that is outdated is bad for business.
The solution is to notify Varnish when there is fresh content available. This can be done through three mechanisms. HTTP purging, banning and forced cache misses. First, let me explain the HTTP purges.
HTTP Purges
A purge is what happens when you pick out an object from the cache and discard it along with its var
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