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Varnish can only really help Reddit with users who aren't logged in since every page is customized. It'd still help in high volume scenarios since Varnish solve

by natrius 14y ago

Varnish can only really help Reddit with users who aren't logged in since every page is customized. It'd still help in high volume scenarios since Varnish solves the thundering herd problem: only one request (at most) will hit the database for each invalidation.

emidln 14y ago
Vanish can cache snippets of content. They refer to this as Edge Side Includes.
- natrius 14y ago
  Reddit's customization is far more than snippets. I've used ESIs with Varnish extensively, and I don't think it would help much for authenticated Reddit users.