PoC using cache w/ Varnish

config/packages/api_platform.yaml

@@ -34,3 +34,7 @@ api_platform:
         json: ['application/json']
     swagger:
         versions: [3]
+    http_cache:
+      invalidation:
+        enabled: true
+        varnish_urls: ['http://varnish']

docker-compose.yml

@@ -95,13 +95,24 @@ services:
       - 'php_cache:/var/www/html/var/cache'
       - 'php_public_images:/var/www/html/web/images'
 
+  varnish:
+    image: varnish:7
+    depends_on:
+      - nginx
+    ports:
+      - '80:80'
+    volumes:
+      - ./docker/varnish/default.vcl:/etc/varnish/default.vcl:ro
+    environment:
+      - VARNISH_SIZE=256M
+
   nginx:
     image: 'nginx:1.25-alpine'
     depends_on:
       - php
       - centrifugo
-    ports:
-      - '80:80'
+    expose:
+      - 8080
     volumes:
       - './docker/nginx/conf.d:/etc/nginx/conf.d:ro'
       - './web:/var/www/html/web:ro'

docker/nginx/conf.d/default.conf

@@ -9,6 +9,8 @@ map $http_upgrade $connection_upgrade {
 }
 
 server {
+    listen 8080;
+    server_name _;
 
     root /var/www/html/web;
 

docker/varnish/default.vcl

@@ -0,0 +1,69 @@
+vcl 4.1;
+
+backend default {
+    .host = "nginx";
+    .port = "8080";
+}
+
+acl purge {
+    "127.0.0.1";
+    "nginx";
+    "php";
+    "varnish";
+}
+
+sub vcl_recv {
+    if (req.method == "BAN") {
+        if (!client.ip ~ purge) {
+            return (synth(403, "Forbidden"));
+        }
+        if (req.http.Cache-Tags) {
+            ban("obj.http.Cache-Tags ~ " + req.http.Cache-Tags);
+            return (synth(200, "Banned"));
+        }
+        return (synth(400, "Missing Cache-Tags header"));
+    }
+
+    if (req.method == "PURGE") {
+        if (!client.ip ~ purge) {
+            return (synth(403, "Forbidden"));
+        }
+        return (purge);
+    }
+
+    if (req.method != "GET" && req.method != "HEAD") {
+        return (pass);
+    }
+
+    # Avoid caching Centrifugo & WebSocket
+    if (req.url ~ "^/centrifugo") {
+        return (pass);
+    }
+
+    return (hash);
+}
+
+sub vcl_hash {
+    hash_data(req.http.host);
+    hash_data(req.url);
+}
+
+sub vcl_backend_response {
+    if (beresp.http.Cache-Control ~ "private") {
+        set beresp.uncacheable = true;
+    } else {
+        set beresp.ttl = 1h;
+    }
+
+    if (beresp.http.Cache-Tags) {
+        set beresp.http.X-Cache-Tags = beresp.http.Cache-Tags;
+    }
+}
+
+sub vcl_deliver {
+    if (obj.hits > 0) {
+        set resp.http.X-Cache = "HIT";
+    } else {
+        set resp.http.X-Cache = "MISS";
+    }
+}

src/Entity/LocalBusiness.php

@@ -55,6 +55,10 @@
 #[Vich\Uploadable]
 #[ApiResource(
     shortName: 'Restaurant',
+    cacheHeaders: [
+        'max_age' => 60,
+        'public' => true
+    ],
     operations: [
         new Get(
             normalizationContext: [