@@ -12,22 +12,22 @@ Features: * Local cache used to buffer duplicate gets per request -Standard caching techniques involve reading from the cache within the action to see if the view -is cached, if not then execute expensive code as the view will need to be rendered. +Standard fragment caching techniques involve reading from the cache within the action to see +if the view is cached and then again reading the same key from the cache in the view. There is a rare situation on websites with good levels of traffic where the cache is populated when the action checks, but before the view is executed a separate request expires/deletes that cache entry resulting in the view being rendered rather than pulled from the cache. In -this case the action hasn't does what it's needed todo for the view, so lots of weird errors -about instance vars not being nil etc... appear. This is a very frustrating problem to have -once you have figured out whats actually causing it. +this case the action hasn't done what it's needed to do for the view, so lots of weird errors +about instance vars being nil etc... appear. This is a very frustrating problem to have +once you have figured out what is actually causing it. SpandexMemCacheStore caches the result from the action's cache read and returns that to the view without going to memcache a second time. This also occurs for session reads, Rails does a minimum of two reads per request, this local caching cuts that down to one. For a dynamic web 2.0 site which has several layers of fragment caching this can halve the -number of reads from memcache per request with a populated cache. +number of reads from memcache per request with a populated cache. Thus speeding up the site. The SpandexMemCacheStore's local cache is cleared before each request is executed. @@ -56,10 +56,15 @@ config.cache_store = :spandex_mem_cache_store, '127.0.0.1', {:namespace => "mywe Usage: -Nothing new or special yet. Just drop it in as above and it'll instantly start do the things +Nothing new or special yet. Just drop it in as above and it'll instantly start doing the things described above. +Location: + +https://github.com/terrcin/spandex_mem_cache_store + + Requirements: Rails >= 2.1 @@ -70,16 +75,22 @@ Recommended Plugins: * XML Cache http://code.google.com/p/xmlcache/ +Fragment caching for xml :-) + Future Plans: +Basically this is the start of me releasing a bunch of work that I've done in this area, I intend +to tidy the code up a bit more as time goes buy and include the following: + +* TESTS! (I know, not had time, but it is used on at least one live site) * Make this a Gem * Conditional caching * Multi-Get * Dynamic key helpers * Make the code more awesome -Latest details and dicussion can be found at a dedicated page on my blog: +Latest details and discussion can be found at a dedicated page on my blog: www.motionstandingstill.com/spandex-mem-cache-store README 065e4e6c14a98b7dba5b7814dcc0eac4eec882c5 Nahum Wild nahum.wild@gmail.com http://github.com/terrcin/spandex_mem_cache_store/commit/a9b97d7dc391f19fce91559990ee5805d40f535b a9b97d7dc391f19fce91559990ee5805d40f535b 2008-11-13T13:32:13-08:00 2008-11-13T13:32:13-08:00 Sorted out some bad grammer in the README. :-) 37bd4eb19b8cdaf4944c4b111f9c38914e7a23c8 Nahum Wild nahum.wild@gmail.com