Update intervals. add WAIT_AFTER_LAST_REQUEST

Author: jcatertychnyi

README.md

@@ -28,6 +28,7 @@ This project provides a **Dockerized prerender service** based on `prerender` wi
 | `PORT`           | `3000` | Port the service listens on         |
 | `CACHE_MAXSIZE`  | `1000` | Maximum number of cached entries    |
 | `CACHE_TTL`      | `43200`| Cache lifetime in seconds (12 hour) |
+| `WAIT_AFTER_LAST_REQUEST` | `200` | Wait time (ms) after last network request before rendering |
 
 ---
 
@@ -84,6 +85,8 @@ services:
       - CACHE_MAXSIZE=1000
       # Cache duration in seconds (43200s = 12 hours)
       - CACHE_TTL=43200
+      # Wait time in ms after last network request before rendering
+      - WAIT_AFTER_LAST_REQUEST=200
       
 ```
 

server.js

@@ -20,16 +20,18 @@ const server = prerender({
         '--disable-software-rasterizer',
         '--metrics-recording-only',
         '--no-first-run',
-        '--safebrowsing-disable-auto-update'
+        '--safebrowsing-disable-auto-update',
+        '--blink-settings=imagesEnabled=false'
     ],
     pageLoadTimeout: 20000,
-    waitAfterLastRequest: 1500,
-    pageDoneCheckInterval: 300,
+    waitAfterLastRequest: parseInt(process.env.WAIT_AFTER_LAST_REQUEST, 10) || 200,
+    pageDoneCheckInterval: 50,
     chromeRefreshRate: 100
 });
 
 process.env.CACHE_MAXSIZE = process.env.CACHE_MAXSIZE || 1000;
 process.env.CACHE_TTL = process.env.CACHE_TTL || 43200;
+process.env.WAIT_AFTER_LAST_REQUEST = process.env.WAIT_AFTER_LAST_REQUEST || 200;
 
 // Block requests that typically hang and prevent page from finishing
 const BLOCKED_PATTERNS = [