Add Varnish caching layer for OpenRuntimes executor

.env

@@ -83,7 +83,7 @@ _APP_COMPUTE_INACTIVE_THRESHOLD=600
 _APP_COMPUTE_MAINTENANCE_INTERVAL=600
 _APP_COMPUTE_RUNTIMES_NETWORK=runtimes
 _APP_EXECUTOR_SECRET=your-secret-key
-_APP_EXECUTOR_HOST=http://exc1/v1
+_APP_EXECUTOR_HOST=http://fastly/v1
 _APP_FUNCTIONS_RUNTIMES=php-8.0,node-18.0,python-3.9,ruby-3.1
 _APP_SITES_RUNTIMES=static-1,node-22,flutter-3.29
 _APP_MAINTENANCE_INTERVAL=86400

docker-compose.yml

@@ -946,12 +946,32 @@ services:
     networks:
       - appwrite
 
+  fastly:
+    image: varnish:7.7.1
+    container_name: fastly
+    hostname: fastly
+    ports:
+        - 1337:80
+    volumes:
+    - ./varnish.vcl:/etc/varnish/default.vcl:ro
+    networks:
+      - appwrite
+      - runtimes
+    depends_on:
+      - openruntimes-executor
+    command: >
+      varnishd
+      -F
+      -f /etc/varnish/default.vcl
+      -a :80
+      -s malloc,256m
+
   openruntimes-executor:
     container_name: openruntimes-executor
     hostname: exc1
     <<: *x-logging
     stop_signal: SIGINT
-    image: openruntimes/executor:0.7.15-streaming-1
+    image: executor-openruntimes-executor:latest
     restart: unless-stopped
     networks:
       - appwrite
@@ -1015,7 +1035,7 @@ services:
       - OPR_PROXY_SECRET=$_APP_EXECUTOR_SECRET
       - OPR_PROXY_LOGGING_CONFIG=$_APP_LOGGING_CONFIG
       - OPR_PROXY_ALGORITHM=random
-      - OPR_PROXY_EXECUTORS=exc1
+      - OPR_PROXY_EXECUTORS=fastly
       - OPR_PROXY_HEALTHCHECK_INTERVAL=10000
       - OPR_PROXY_MAX_TIMEOUT=600
       - OPR_PROXY_HEALTHCHECK=enabled

varnish.vcl

@@ -0,0 +1,11 @@
+vcl 4.1;
+
+backend exc1 {
+    .host = "exc1";
+    .port = "80";
+    .first_byte_timeout = 10s;
+}
+
+sub vcl_recv {
+    set req.backend_hint = exc1;
+}