cache_digests

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2Distinct people

2Mentions

0Explicit recommenders

635GitHub stars

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 12:54:37 PM UTC.

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Mentions over time

HN mentions by week2 dated mentions

Observed mentions: 2012-08-16 23:28:43 UTC to 2012-12-05 00:51:57 UTC. Weeks start Monday, UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
Aug 13	2012-08-13 00:00:00 UTC	2012-08-20 00:00:00 UTC	1	1
Aug 20	2012-08-20 00:00:00 UTC	2012-08-27 00:00:00 UTC	0	0
Aug 27	2012-08-27 00:00:00 UTC	2012-09-03 00:00:00 UTC	0	0
Sep 3	2012-09-03 00:00:00 UTC	2012-09-10 00:00:00 UTC	0	0
Sep 10	2012-09-10 00:00:00 UTC	2012-09-17 00:00:00 UTC	0	0
Sep 17	2012-09-17 00:00:00 UTC	2012-09-24 00:00:00 UTC	0	0
Sep 24	2012-09-24 00:00:00 UTC	2012-10-01 00:00:00 UTC	0	0
Oct 1	2012-10-01 00:00:00 UTC	2012-10-08 00:00:00 UTC	0	0
Oct 8	2012-10-08 00:00:00 UTC	2012-10-15 00:00:00 UTC	0	0
Oct 15	2012-10-15 00:00:00 UTC	2012-10-22 00:00:00 UTC	0	0
Oct 22	2012-10-22 00:00:00 UTC	2012-10-29 00:00:00 UTC	0	0
Oct 29	2012-10-29 00:00:00 UTC	2012-11-05 00:00:00 UTC	0	0
Nov 5	2012-11-05 00:00:00 UTC	2012-11-12 00:00:00 UTC	0	0
Nov 12	2012-11-12 00:00:00 UTC	2012-11-19 00:00:00 UTC	0	0
Nov 19	2012-11-19 00:00:00 UTC	2012-11-26 00:00:00 UTC	0	0
Nov 26	2012-11-26 00:00:00 UTC	2012-12-03 00:00:00 UTC	0	0
Dec 3	2012-12-03 00:00:00 UTC	2012-12-10 00:00:00 UTC	1	1

What Hacker News says

2 sources

steveklabnik·Dec 5, 2012

Please note that Rails 4 will remove action and page caching, and put them in a plugin. In addition, 'declarative etags' have been added. https://github.com/rails/rails/commit/ed5c938fa36995f06d4917... Oh, and the famed 'russian doll' caching: https://github.com/rails/cache_digests

In HTTP Caching in Ruby with Rails

aantix·Aug 16, 2012

The most interesting portion comes at the end; he shows off his caching digest functionality (DHH made the first commit to this project last Wednesday). https://github.com/rails/cache_digests Prior to the caching digest, they (37signals) maintained a version number for each cached partial. Whenever a partial changed, the version number (and all parent encapsulating partials) had to be bumped so that users would receive the latest view update. Now the partials that are cached store an associated md5 of their contents. If the md5's don't match, the view cache is automatically invalidated and regenerated. Brilliant.

In DHH shows code from "Basecamp Next" rewrite & reveals their caching strategies