Add a default rule to not attempt to cache any files larger than 50MB

This fixes connection failures when trying to retrieve large files.
It is less common in typical Pleroma usage, but it's possible to encounter
this on a cloud instance with lower memory.

diff --git a/installation/pleroma.vcl b/installation/pleroma.vcl
index 13dad784c9cc219f48901845e20f83f9278a35d6..4752510ea010be1c91abb14bbf947d433d046131 100644 (file)
--- a/installation/pleroma.vcl
+++ b/installation/pleroma.vcl
@@ -59,6 +59,13 @@ sub vcl_backend_response {
       set beresp.http.CR = beresp.http.content-range;
     }
 
+    # Bypass cache for large files
+    # 50000000 ~ 50MB
+    if (std.integer(beresp.http.content-length, 0) > 50000000) {
+       set beresp.uncacheable = true;
+       return(deliver);
+    }
+
     # Don't cache objects that require authentication
     if (beresp.http.Authorization && !beresp.http.Cache-Control ~ "public") {
       set beresp.uncacheable = true;