prerender_rails

Automatically identifies search engine crawlers using a default user agent list, intercepting requests without manual configuration, as described in the 'How it works' section.

Supports whitelisting and blacklisting with regex patterns, allowing precise control over which pages are prerendered, preventing unnecessary processing of resources or private routes.

Provides before_render and after_render callbacks to integrate with Redis or Memcached, enabling fast response times by caching prerendered HTML, with example code in the README.

Can connect to a self-hosted Prerender server or use the hosted prerender.io service, offering flexibility in infrastructure and cost management via environment variables or options.