With Traffic Policy, you can map permalinks to “pretty” alternatives that are easier for both humans and SEO bots to understand. This is especially useful for blogs that use a CMS, since the generated permalinks might be affecting your SEO performance. This rule rewrites a user-friendly URL like /blog/11/example-title to /blog/index.php?p=11&title=example-title, which is readable by your CMS. 
on_http_request:
  -     expressions:
      - req.url.path.startsWith('/blog')
    actions:
      -         type: url-rewrite
        config:
          from: /blog/([0-9]+)/([a-zA-Z]+)/
          to: /blog/index.php?p=$1&title=$2
See the url-rewrite Traffic Policy action docs for more information.