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Re: [PATCH 3/3] gitweb: use new Git::Repo API, and add optional caching

From
Jakub Narebski <jnareb@gmail.com>
Date
Jul 14, 2008, 23:14 UTC
Message-ID
<200807150114.44402.jnareb@gmail.com>
In-Reply-To
<487BDB34.7010002@gmail.com>
Lea Wiemann wrote:
> Jakub Narebski wrote:
Show 8 quoted lines
> > Note that if caching is enabled, you can set expires to either
> > time-to-expire of cache entries (simpler), or time left to live to
> > invalidation of item in cache (better, but more complicated)
> 
> Gitweb's cache is actually never out-of-date, and cache invalidation
> happens automatically.  It uses some (long) expiry times to guard
> against non-standard modification of the repository, but it's nothing
> the HTTP client should be concerned with.
Could you explain then how gitweb cache is invalidated?

The _reasoning_ behind setting Expires:/Cache-Control: max-age= header for gitweb with caching is that browser doesn't need to even try to cache-validate or access page for the time we *know* that output would not change[*1*] because it is from the cache.

[*1*] In significant way: changing relative dates/time doesn't count.
-- 
Jakub Narebski
Poland
Previous: Lea WiemannNext: Lea Wiemann
Message 41 of 55 in “Git::Repo API and gitweb caching”
  1. 0/3 Git::Repo API and gitweb cachingLea Wiemann, Jul 11, 2008
  2. 1/3 gitweb: add test suite with Test::WWW::Mechanize::CGILea Wiemann, Jul 11, 2008
  3. 2/3 add new Git::Repo APILea Wiemann, Jul 11, 2008
  4. Junio C HamanoJul 13, 2008
  5. Lea WiemannJul 14, 2008
  6. Jakub NarebskiJul 13, 2008
  7. Lea WiemannJul 14, 2008
  8. Petr BaudisJul 14, 2008
  9. Lea WiemannJul 14, 2008
  10. Jakub NarebskiJul 14, 2008
  11. Lea WiemannJul 15, 2008
  12. Petr BaudisJul 18, 2008
  13. Jakub NarebskiJul 18, 2008
  14. Petr BaudisJul 18, 2008
  15. Lea WiemannJul 18, 2008
  16. Petr BaudisJul 18, 2008
  17. Johannes SchindelinJul 18, 2008
  18. Statictics on Git.pm usage in git commands (was: [PATCH 2/3] add new Git::Repo API)Jakub Narebski, Jul 19, 2008
  19. Petr BaudisJul 19, 2008
  20. Jakub NarebskiJul 20, 2008
  21. Petr BaudisJul 20, 2008
  22. Johannes SchindelinJul 20, 2008
  23. Petr BaudisJul 20, 2008
  24. Johannes SchindelinJul 20, 2008
  25. Petr BaudisJul 20, 2008
  26. Johannes SchindelinJul 20, 2008
  27. Petr BaudisJul 18, 2008
  28. Jakub NarebskiJul 19, 2008
  29. Jakub NarebskiJul 19, 2008
  30. Petr BaudisJul 20, 2008
  31. Jakub NarebskiJul 20, 2008
  32. Jakub NarebskiJul 16, 2008
  33. Lea WiemannJul 16, 2008
  34. Jakub NarebskiJul 17, 2008
  35. Lea WiemannJul 18, 2008
  36. Jakub NarebskiJul 18, 2008
  37. Lea WiemannJul 18, 2008
  38. 3/3 gitweb: use new Git::Repo API, and add optional cachingLea Wiemann, Jul 11, 2008
  39. Jakub NarebskiJul 14, 2008
  40. Lea WiemannJul 14, 2008
  41. Jakub NarebskiJul 14, 2008
  42. Lea WiemannJul 14, 2008
  43. Jakub NarebskiJul 15, 2008
  44. Lea WiemannJul 15, 2008
  45. Johannes SchindelinJul 15, 2008
  46. J.H.Jul 15, 2008
  47. Lea WiemannJul 15, 2008
  48. J.H.Jul 15, 2008
  49. Johannes SchindelinJul 11, 2008
  50. Jakub NarebskiJul 11, 2008
  51. Lea WiemannJul 11, 2008
  52. Abhijit Menon-SenJul 11, 2008
  53. Jakub NarebskiJul 12, 2008
  54. Lea WiemannJul 19, 2008
  55. Lea WiemannAug 18, 2008

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