I'm running Node.js on a server with only 512MB of RAM. The problem is when I run a script, it will be killed due to out of memory.

By default the Node.js memory limit is 512MB. So I think using --max-old-space-size is useless.

Follows the content of /var/log/syslog:

Oct  7 09:24:42 ubuntu-user kernel: [72604.230204] Out of memory: Kill process 6422 (node) score 774 or sacrifice child
Oct  7 09:24:42 ubuntu-user kernel: [72604.230351] Killed process 6422 (node) total-vm:1575132kB, anon-rss:396268kB, file-rss:0kB

Is there a way to get rid of out of memory without upgrading the memory? (like using persistent storage as additional RAM)

Update: It's a scraper which uses node module request and cheerio. When it runs, it will open hundreds or thousands of webpage (but not in parallel)