Create a small caching layer in PHP « Topincs Issues

Issue description

Some resources rarley change. A subject page is generated dynamically every time although it does not change so frequently. Same goes for a feed. It is necessary to create a small caching mechanism in PHP, which avoids the dynamic generation of pages.

Created: 2009-07-10 09:59:59, Robert Cerny

Modified: 2009-08-21 08:59:06, Robert Cerny

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Comment

[http://pear.php.net/package/Cache_Lite, Cache Lite] makes a good impression. After some central coding i was possible to avoid recreating large pages. The system would affect the resource definition and would cache entries depending on the query string. Additionally it would be necessary to make the system sensitive to the language the resource is delivered and also to the host, since the base is set in every page.

Created: 2009-07-11 08:34:04, Robert Cerny

Modified: 2009-07-11 08:34:04, Robert Cerny

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The general idea is to keep the cache simple for now, because it is very difficult to decide which update affects which resource. The simple principle for the moment is: the whole cache of a store is emptied on any POST, PUT, or DELETE to the store. Very simple.

Created: 2009-07-13 14:56:35, Robert Cerny

Modified: 2009-07-14 16:01:28, Robert Cerny

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The current solution system has the following features: * a store cache can be easily put in effect for a class of resources * a store cache can be made sensitive to varying representations of one resource * a store cache is emptied when a PUT, POST or DELETE to the store is received * a store cache can be cleared manually via the command line very easily by removing the directory below tmp/cache_lite * a store cache can be reset via the browser by calling admin/.clear-cache

Created: 2009-07-14 16:01:28, Robert Cerny

Modified: 2009-07-14 16:01:48, Robert Cerny

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This simple solution yields quite impressive results. With an active store cache 50 identical requests take 4.6 seconds. Without the cache they take 82 seconds!

Created: 2009-07-14 17:40:27, Robert Cerny

Modified: 2009-07-14 17:40:27, Robert Cerny

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Planned for version

Topincs 3.3.0

Created: 2009-07-10 09:59:59, Robert Cerny

Modified: 2009-07-10 09:59:59, Robert Cerny

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Caused

Configuration of the base dir of the cache (Enhancement)

Created: 2009-07-24 11:23:20, Robert Cerny

Modified: 2009-07-24 11:23:20, Robert Cerny

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Cache does not vary by method (Bug)

Created: 2009-07-24 12:54:50, Robert Cerny

Modified: 2009-07-24 12:54:50, Robert Cerny

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Work sessions5

Start date and time	2009-07-11T06:57:55+02:00
End date and time	2009-07-11T08:28:30+02:00
Summary	<"I fiddeled around with [http://pear.php.net/package/Cache_Lite, Cache Lite]. No final code produced, just took a look.
Participant	Robert Cerny

Created: 2009-07-11 07:05:21, Robert Cerny

Modified: 2009-07-11 07:05:21, Robert Cerny

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Start date and time	2009-07-13T12:09:49+02:00
End date and time	2009-07-13T13:23:30+02:00
Summary	<"I improved the existing but not final code. I still need a good solution for varying the response depending on language (ui language and content language) and format (jtm, xtm1, xtm2).
Participant	Robert Cerny

Created: 2009-07-13 12:16:32, Robert Cerny

Modified: 2009-07-13 12:16:32, Robert Cerny

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Start date and time	2009-07-13T17:05:08+02:00
End date and time	2009-07-13T18:07:04+02:00
Summary	<"I made some progress regarding the language variation. Format variation is more difficult as is the setting of the correct headers.
Participant	Robert Cerny

Created: 2009-07-13 17:11:57, Robert Cerny

Modified: 2009-07-13 17:11:57, Robert Cerny

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Start date and time	2009-07-14T08:02:08+02:00
End date and time	2009-07-14T12:06:05+02:00
Summary	<"* I managed to get the header stored aways in the cache and set correctly upon delivering the cached response to the client. * The declaration of a resource to be cached is fairly self explanatory, does not require a lot of knowledge and can be done within a minute max. * I implemented all functionality in a near final state.
Participant	Robert Cerny

Created: 2009-07-14 08:09:28, Robert Cerny

Modified: 2009-07-14 08:09:28, Robert Cerny

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Start date and time	2009-07-14T13:34:58+02:00
End date and time	2009-07-14T16:07:19+02:00
Summary	<"I implemented the remaining functionality (clearing the cache on modification) and made the code final. Currently the feeds and subject pages and article pages are cached to see how that works.
Participant	Robert Cerny

Created: 2009-07-14 13:41:42, Robert Cerny

Modified: 2009-07-14 13:41:42, Robert Cerny

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Affects

Topincs Server (Component)

Created: 2009-07-10 09:59:58, Robert Cerny

Modified: 2009-07-10 09:59:58, Robert Cerny

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Reporting date

2009-07-10+02:00

Created: 2009-07-10 09:59:59, Robert Cerny

Modified: 2009-07-10 09:59:59, Robert Cerny

Link, No reifier

Reported by

Robert Cerny

Created: 2009-07-10 09:59:58, Robert Cerny

Modified: 2009-07-10 09:59:58, Robert Cerny

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Resolving date

2009-07-14+02:00

Created: 2009-07-14 16:02:45, Robert Cerny

Modified: 2009-07-14 16:02:45, Robert Cerny

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Resolved by

Robert Cerny

Created: 2009-07-14 16:02:45, Robert Cerny

Modified: 2009-07-14 16:02:45, Robert Cerny

Link, No reifier

Resolved in version

Topincs 3.3.0

Created: 2009-07-14 16:02:45, Robert Cerny

Modified: 2009-07-14 16:02:45, Robert Cerny

Link, No reifier

Enhancement Create a small caching layer in PHP

Issue description

Comment

Planned for version

Caused

Work sessions5

Affects

Reporting date

Reported by

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Resolved in version

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