Created
May 9, 2017 14:53
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Fastly Default Main VCL
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| sub vcl_recv { | |
| # Note: the convention of if (req.http.Fastly-FF) indicates this should only happen on the shield. Use !Fastly-FF to only execute on the edge | |
| if (req.http.Fastly-FF) { | |
| set req.max_stale_while_revalidate = 0s; | |
| } | |
| # Note: do not remove the macros below, this inserts whatever is configured in the web portal, and is required | |
| #FASTLY recv | |
| # Below is the default to not cache POSTs | |
| if (req.request != "HEAD" && req.request != "GET" && req.request != "FASTLYPURGE") { | |
| return(pass); | |
| } | |
| return(lookup); | |
| } | |
| sub vcl_fetch { | |
| /* handle 5XX (or any other unwanted status code) */ | |
| if (beresp.status >= 500 && beresp.status < 600) { | |
| /* deliver stale if the object is available */ | |
| if (stale.exists) { | |
| return(deliver_stale); | |
| } | |
| if (req.restarts < 1 && (req.request == "GET" || req.request == "HEAD")) { | |
| restart; | |
| } | |
| /* else go to vcl_error to deliver a synthetic */ | |
| error 503; | |
| } | |
| /* set stale_if_error and stale_while_revalidate (customize these values) */ | |
| set beresp.stale_if_error = 86400s; | |
| set beresp.stale_while_revalidate = 60s; | |
| #FASTLY fetch | |
| if ((beresp.status == 500 || beresp.status == 503) && req.restarts < 1 && (req.request == "GET" || req.request == "HEAD")) { | |
| restart; | |
| } | |
| if (req.restarts > 0) { | |
| set beresp.http.Fastly-Restarts = req.restarts; | |
| } | |
| if (beresp.http.Set-Cookie) { | |
| set req.http.Fastly-Cachetype = "SETCOOKIE"; | |
| return(pass); | |
| } | |
| if (beresp.http.Cache-Control ~ "private") { | |
| set req.http.Fastly-Cachetype = "PRIVATE"; | |
| return(pass); | |
| } | |
| if (beresp.http.Expires || beresp.http.Surrogate-Control ~ "max-age" || beresp.http.Cache-Control ~ "(s-maxage|max-age)") { | |
| # keep the ttl here | |
| } else { | |
| # apply the default ttl | |
| set beresp.ttl = 86400s; | |
| } | |
| # Set CORS headers | |
| set beresp.http.access-control-allow-origin = "*"; | |
| set beresp.http.access-control-allow-methods = "GET,POST"; | |
| set beresp.http.access-control-allow-headers = "*"; | |
| set beresp.http.access-control-allow-credentials = "false"; | |
| set beresp.http.access-control-max-age = "86400"; | |
| # Custom cache rules | |
| return(deliver); | |
| } | |
| sub vcl_hit { | |
| #FASTLY hit | |
| if (!obj.cacheable) { | |
| return(pass); | |
| } | |
| return(deliver); | |
| } | |
| sub vcl_miss { | |
| #FASTLY miss | |
| return(fetch); | |
| } | |
| sub vcl_deliver { | |
| unset resp.http.content-disposition; | |
| if (resp.status >= 500 && resp.status < 600) { | |
| /* restart if the stale object is available */ | |
| if (stale.exists) { | |
| restart; | |
| } | |
| } | |
| #FASTLY deliver | |
| return(deliver); | |
| } | |
| sub vcl_error { | |
| #FASTLY error | |
| /* handle 503s */ | |
| if (obj.status >= 500 && obj.status < 600) { | |
| /* deliver stale object if it is available */ | |
| if (stale.exists) { | |
| return(deliver_stale); | |
| } | |
| /* otherwise, return a synthetic */ | |
| /* include your HTML response here */ | |
| # TODO -- insert a default image? | |
| synthetic {"<!DOCTYPE html><html>An error has occured.</html>"}; | |
| return(deliver); | |
| } | |
| } | |
| sub vcl_pass { | |
| #FASTLY pass | |
| } |
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