Ilya Kaplan

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  • Mixing beresp.ttl and Expires header

    I’m trying to implement constant cache time that won’t be affected by the fact that shield is configured. Usually, if I set 1h TTL it might be up to 2 hours of real TTL if edge hits shield at the e...

  • Running vcl_recv and vcl_deliver on shield seems redundant

    So it’s kind of abstract question. I know that shield works exactly as any other node and runs same VCL and that’s why we need all these complex conditions " if (!req.http.fastly-ff) {…} "...

  • Http/2 push, preload and esi

    Hi there, After reading the HTTP/2 server push documentation, I have couple of questions related to different variations of options that it supports. First of all the relation of push mechanism an...

  • Is it OK to have duplicate keys in Surrogate-Key?

    I have few questions about surrogate keys. What is the limit of keys in Surrogate-Key header? Is there any performance issues with having multiple surrogate keys? Is there a problem with having d...

  • Using capture groups in regexp replace

    I need to replace url like this: /some/prefix/url /url/secret-suffix I’m doing it now with 2 separate rules: regexp replace “^/some/prefix” with “” append “/secret-suffix” What I’d do if group...