[lloeki]

The two major areas where caching is used in Rails are:

- database queries

- template rendering

First one because round trip to db + running the query + allocating ORM result objects that otherwise get thrown away.

Second one because allocating a ton of strings that get join'd and thrown away.

> No one disputes that Ruby is slow.

I am, because the blanket statement doesn't make sense without context. Also that view is largely biased by the typical assumption that Ruby == Rails.

[karmakaze]

Well objectively, one could say both Ruby and RoR are slow. The first via The Computer Language Benchmarks Game[0], and the latter via TechEmpower Web Frameworks Benchmarks[1].

In practice though the database is doing most of the work, most of the time so is typically slower than both.

[0] https://en.wikipedia.org/wiki/The_Computer_Language_Benchmar...

[1] https://www.techempower.com/benchmarks

[igouy]

Ruby without Rails —

https://benchmarksgame-team.pages.debian.net/benchmarksgame/...

[alberth]

> "Also that view is largely biased by the typical assumption that Ruby == Rails."

Given that the predominate / vast majority use case for Ruby is for web development and Rails being the dominate Ruby web framework ... it's a fair assumption & characterization for people to make that the Ruby == Rails use case.