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Fixes #97: Include Varnish in Drupal VM.
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@@ -20,3 +20,4 @@ geerlingguy.pimpmylog | |
| geerlingguy.repo-remi | ||
| geerlingguy.security | ||
| geerlingguy.solr | ||
| geerlingguy.varnish | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,91 @@ | ||
| vcl 4.0; | ||
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| # This Varnish VCL has been adapted from the Four Kitchens VCL for Varnish 3. | ||
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| # Default backend definition. Points to Apache, normally. | ||
| backend default { | ||
| .host = "{{ varnish_default_backend_host }}"; | ||
| .port = "{{ varnish_default_backend_port }}"; | ||
| .first_byte_timeout = 300s; | ||
| } | ||
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| # Respond to incoming requests. | ||
| sub vcl_recv { | ||
| # Pass through any administrative or AJAX-related paths. | ||
| if (req.url ~ "^/status\.php$" || | ||
| req.url ~ "^/update\.php$" || | ||
| req.url ~ "^/admin$" || | ||
| req.url ~ "^/admin/.*$" || | ||
| req.url ~ "^/flag/.*$" || | ||
| req.url ~ "^.*/ajax/.*$" || | ||
| req.url ~ "^.*/ahah/.*$") { | ||
| return (pass); | ||
| } | ||
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| # Removing cookies for static content so Varnish caches these files. | ||
| if (req.url ~ "(?i)\.(pdf|asc|dat|txt|doc|xls|ppt|tgz|csv|png|gif|jpeg|jpg|ico|swf|css|js)(\?.*)?$") { | ||
| unset req.http.Cookie; | ||
| } | ||
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| # Remove all cookies that Drupal doesn't need to know about. We explicitly | ||
| # list the ones that Drupal does need, the SESS and NO_CACHE. If, after | ||
| # running this code we find that either of these two cookies remains, we | ||
| # will pass as the page cannot be cached. | ||
| if (req.http.Cookie) { | ||
| # 1. Append a semi-colon to the front of the cookie string. | ||
| # 2. Remove all spaces that appear after semi-colons. | ||
| # 3. Match the cookies we want to keep, adding the space we removed | ||
| # previously back. (\1) is first matching group in the regsuball. | ||
| # 4. Remove all other cookies, identifying them by the fact that they have | ||
| # no space after the preceding semi-colon. | ||
| # 5. Remove all spaces and semi-colons from the beginning and end of the | ||
| # cookie string. | ||
| set req.http.Cookie = ";" + req.http.Cookie; | ||
| set req.http.Cookie = regsuball(req.http.Cookie, "; +", ";"); | ||
| set req.http.Cookie = regsuball(req.http.Cookie, ";(SESS[a-z0-9]+|SSESS[a-z0-9]+|NO_CACHE)=", "; \1="); | ||
| set req.http.Cookie = regsuball(req.http.Cookie, ";[^ ][^;]*", ""); | ||
| set req.http.Cookie = regsuball(req.http.Cookie, "^[; ]+|[; ]+$", ""); | ||
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| if (req.http.Cookie == "") { | ||
| # If there are no remaining cookies, remove the cookie header. If there | ||
| # aren't any cookie headers, Varnish's default behavior will be to cache | ||
| # the page. | ||
| unset req.http.Cookie; | ||
| } | ||
| else { | ||
| # If there is any cookies left (a session or NO_CACHE cookie), do not | ||
| # cache the page. Pass it on to Apache directly. | ||
| return (pass); | ||
| } | ||
| } | ||
| } | ||
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| # Set a header to track a cache HITs and MISSes. | ||
| sub vcl_deliver { | ||
| if (obj.hits > 0) { | ||
| set resp.http.X-Varnish-Cache = "HIT"; | ||
| } | ||
| else { | ||
| set resp.http.X-Varnish-Cache = "MISS"; | ||
| } | ||
| } | ||
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| # Instruct Varnish what to do in the case of certain backend responses (beresp). | ||
| sub vcl_backend_response { | ||
| # Cache 404s, 301s, at 500s with a short lifetime to protect the backend. | ||
| if (beresp.status == 404 || beresp.status == 301 || beresp.status == 500) { | ||
| set beresp.ttl = 10m; | ||
| } | ||
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| # Don't allow static files to set cookies. | ||
| # (?i) denotes case insensitive in PCRE (perl compatible regular expressions). | ||
| # This list of extensions appears twice, once here and again in vcl_recv so | ||
| # make sure you edit both and keep them equal. | ||
| if (bereq.url ~ "(?i)\.(pdf|asc|dat|txt|doc|xls|ppt|tgz|csv|png|gif|jpeg|jpg|ico|swf|css|js)(\?.*)?$") { | ||
| unset beresp.http.set-cookie; | ||
| } | ||
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| # Allow items to remain in cache up to 2 hours past their cache expiration. | ||
| set beresp.grace = 2h; | ||
| } | ||
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