265 lines
8.0 KiB
Plaintext
265 lines
8.0 KiB
Plaintext
vcl 4.1;
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import vsthrottle;
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import std;
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# ===== Backend =====
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backend app {
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.host = "app";
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.port = "${APP_PORT}";
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}
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# ===== ACL =====
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acl purge {
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"127.0.0.1";
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"::1";
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}
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# ===== RECV =====
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sub vcl_recv {
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# RATE LIMIT: 200 żądań / 10s, blokada 60s
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if (vsthrottle.is_denied(client.identity, 200, 10s, 60s)) {
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return (synth(429, "Too Many Requests"));
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}
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# PURGE tylko lokalnie
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if (req.method == "PURGE") {
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if (!client.ip ~ purge) { return (synth(405, "Not allowed")); }
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return (purge);
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}
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# omijamy cache dla healthchecków / wewnętrznych nagłówków
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if (req.url == "/healthcheck" || req.http.X-Internal-Check) { return (pass); }
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# Specjalna obsługa WebSocket i socket.io
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if (req.http.Upgrade ~ "(?i)websocket" || req.url ~ "^/socket.io/") {
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return (pipe);
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}
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# metody inne niż GET/HEAD bez cache
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if (req.method != "GET" && req.method != "HEAD") { return (pass); }
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# Żądania z Authorization nie są buforowane
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if (req.http.Authorization) { return (pass); }
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# ---- Normalizacja Accept-Encoding (kolejność: zstd > br > gzip) ----
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if (req.http.Accept-Encoding) {
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if (req.http.Accept-Encoding ~ "zstd") {
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set req.http.Accept-Encoding = "zstd";
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} else if (req.http.Accept-Encoding ~ "br") {
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set req.http.Accept-Encoding = "br";
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} else if (req.http.Accept-Encoding ~ "gzip") {
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set req.http.Accept-Encoding = "gzip";
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} else {
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set req.http.Accept-Encoding = "identity";
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}
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}
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# ---- (Opcjonalnie) Normalizacja Accept dla obrazów generowanych wariantowo ----
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# if (req.url ~ "\.(png|jpe?g|gif|bmp)$") {
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# if (req.http.Accept ~ "image/webp") {
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# set req.http.X-Accept-Image = "modern"; # webp
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# } else {
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# set req.http.X-Accept-Image = "legacy"; # jpg/png
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# }
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# }
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# ---- STATYCZNE – agresywny cache + ignorujemy sesję ----
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if (req.url ~ "^/static/" || req.url ~ "\.(css|js|png|jpe?g|webp|svg|ico|woff2?)$") {
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unset req.http.Cookie;
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unset req.http.Authorization;
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return (hash);
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}
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if (!req.http.X-Forwarded-Proto) {
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set req.http.X-Forwarded-Proto = "https";
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}
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if (req.url == "/healthcheck" || req.http.X-Internal-Check) {
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set req.http.X-Pass-Reason = "internal";
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return (pass);
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}
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if (req.method != "GET" && req.method != "HEAD") {
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set req.http.X-Pass-Reason = "method";
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return (pass);
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}
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if (req.http.Authorization) {
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set req.http.X-Pass-Reason = "auth";
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return (pass);
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}
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# jeśli chcesz PASS przy cookie:
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# if (req.http.Cookie) {
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# set req.http.X-Pass-Reason = "cookie";
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# return (pass);
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# }
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return (hash);
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}
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# ===== PIPE (WebSocket passthrough) =====
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sub vcl_pipe {
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if (req.http.Upgrade) {
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set bereq.http.Upgrade = req.http.Upgrade;
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set bereq.http.Connection = req.http.Connection;
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}
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}
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# ===== HASH =====
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sub vcl_hash {
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hash_data(req.url);
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if (req.http.host) { hash_data(req.http.host); } else { hash_data(server.ip); }
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# Cookie: zostają dla dynamicznych (dla statyków wyczyszczone wcześniej)
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if (req.http.Cookie) { hash_data(req.http.Cookie); }
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# Accept-Encoding: już znormalizowany do zstd/br/gzip/identity
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if (req.http.Accept-Encoding) { hash_data(req.http.Accept-Encoding); }
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# (Opcjonalnie) sygnał obrazów z negocjacją po Accept
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if (req.http.X-Accept-Image) { hash_data(req.http.X-Accept-Image); }
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}
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# ===== BACKEND_RESPONSE =====
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sub vcl_backend_response {
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# Zakaz cache – respektujemy
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if (beresp.http.Cache-Control ~ "(?i)no-store|private") {
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set beresp.uncacheable = true;
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set beresp.ttl = 0s;
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set beresp.http.X-Pass-Reason = "no-store";
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return (deliver);
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}
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# NIE cache'uj redirectów do loginu (HTML) z backendu
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if (beresp.status >= 300 && beresp.status < 400) {
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set beresp.uncacheable = true;
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set beresp.ttl = 0s;
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set beresp.http.X-Pass-Reason = "redirect";
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return (deliver);
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}
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# Nie cache'uj statyków, jeśli status ≠ 200
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if (bereq.url ~ "^/static/" ||
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bereq.url ~ "\.(css|js|png|jpe?g|webp|svg|ico|woff2?)($|\?)") {
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if (beresp.status != 200) {
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set beresp.uncacheable = true;
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set beresp.ttl = 0s;
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return (deliver);
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}
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}
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# Jeśli pod .js przychodzi text/html — też nie cache'uj (to zwykle redirect/login)
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if (bereq.url ~ "\.js(\?.*)?$" && beresp.http.Content-Type ~ "(?i)text/html") {
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set beresp.uncacheable = true;
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set beresp.ttl = 0s;
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return (deliver);
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}
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# Wymuś poprawny Content-Type dla .js/.css, gdy backend zwróci HTML
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if (bereq.url ~ "\.js(\?.*)?$") {
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if (!beresp.http.Content-Type || beresp.http.Content-Type ~ "(?i)text/html") {
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set beresp.http.Content-Type = "application/javascript; charset=utf-8";
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}
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}
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if (bereq.url ~ "\.css(\?.*)?$") {
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if (!beresp.http.Content-Type || beresp.http.Content-Type ~ "(?i)text/html") {
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set beresp.http.Content-Type = "text/css; charset=utf-8";
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}
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}
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# ---- STATYCZNE: zdejmij Set-Cookie i Vary: Cookie, zapewnij TTL ----
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if (bereq.url ~ "^/static/" || bereq.url ~ "\.(css|js|png|jpe?g|webp|svg|ico|woff2?)$") {
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unset beresp.http.Set-Cookie;
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# Jeśli backend dodał Vary: Cookie, usuńmy ten element (nie wpływa na statyki)
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if (beresp.http.Vary) {
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set beresp.http.Vary = regsuball(beresp.http.Vary, "(?i)(^|,)[[:space:]]*Cookie[[:space:]]*(,|$)", "\1");
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set beresp.http.Vary = regsuball(beresp.http.Vary, ",[[:space:]]*,", ",");
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set beresp.http.Vary = regsub(beresp.http.Vary, "^[[:space:]]*,[[:space:]]*", "");
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set beresp.http.Vary = regsub(beresp.http.Vary, "[[:space:]]*,[[:space:]]*$", "");
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if (beresp.http.Vary ~ "^[[:space:]]*$") { unset beresp.http.Vary; }
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}
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# Jeśli brak kontroli czasu życia – ustawiamy twarde wartości
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if (!(beresp.http.Cache-Control ~ "(?i)(s-maxage|max-age)")) {
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set beresp.ttl = 24h;
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set beresp.http.Cache-Control = "public, max-age=86400, immutable";
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}
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set beresp.grace = 1h;
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set beresp.keep = 24h;
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}
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# ---- Ogólne TTL z nagłówków ----
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if (beresp.http.Cache-Control ~ "(?i)s-maxage=([0-9]+)") {
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set beresp.ttl = std.duration(regsub(beresp.http.Cache-Control, "(?i).*s-maxage=([0-9]+).*", "\1") + "s", 0s);
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} else if (beresp.http.Cache-Control ~ "(?i)max-age=([0-9]+)") {
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set beresp.ttl = std.duration(regsub(beresp.http.Cache-Control, "(?i).*max-age=([0-9]+).*", "\1") + "s", 0s);
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} else if (beresp.http.Expires) {
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set beresp.ttl = std.time(beresp.http.Expires, now) - now;
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if (beresp.ttl < 0s) { set beresp.ttl = 0s; }
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} else {
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if (beresp.ttl <= 0s) { set beresp.ttl = 60s; }
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}
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# Immutable => dłuższe grace/keep
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if (beresp.http.Cache-Control ~ "(?i)immutable") {
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set beresp.grace = 1h;
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set beresp.keep = 24h;
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}
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# Kompresja po stronie Varnisha wyłącznie dla klientów akceptujących gzip
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# i tylko jeśli backend nie dostarczył już Content-Encoding.
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if (!beresp.http.Content-Encoding && bereq.http.Accept-Encoding ~ "gzip") {
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# Kompresujemy tylko „tekstowe” typy; wykluczamy WASM
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if (beresp.http.Content-Type ~ "(?i)text/|application/(javascript|json|xml)") {
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set beresp.do_gzip = true;
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}
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}
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# Duże odpowiedzi streamujemy
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if (beresp.http.Content-Length && std.integer(beresp.http.Content-Length, 0) > 1048576) {
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set beresp.do_stream = true;
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}
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}
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# (Opcjonalnie) Serwuj „stale” przy błędach backendu, jeśli jest obiekt w grace
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sub vcl_backend_error {
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return (deliver);
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}
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# ===== DELIVER =====
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sub vcl_deliver {
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if (obj.uncacheable) {
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if (req.http.X-Pass-Reason) {
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set resp.http.X-Cache = "PASS:" + req.http.X-Pass-Reason;
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} else if (resp.http.X-Pass-Reason) { # z backendu
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set resp.http.X-Cache = "PASS:" + resp.http.X-Pass-Reason;
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} else {
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set resp.http.X-Cache = "PASS";
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}
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unset resp.http.X-Pass-Reason;
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unset resp.http.Age;
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} else if (obj.hits > 0) {
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set resp.http.X-Cache = "HIT";
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} else {
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set resp.http.X-Cache = "MISS";
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unset resp.http.Age;
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}
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unset resp.http.Via;
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unset resp.http.X-Varnish;
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unset resp.http.Server;
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}
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sub vcl_synth {
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set resp.http.X-Cache = "SYNTH";
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}
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# ===== PURGE HANDLER =====
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sub vcl_purge {
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return (synth(200, "Purged"));
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}
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