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authorJennifer Hodgdon2012-12-07 16:29:57 (GMT)
committer Jennifer Hodgdon2012-12-07 16:29:57 (GMT)
commite8d0d122983335532debb94132552540eb3443ce (patch)
tree2b340e267c1e990c490f10b1f27eaec125d8533d
parent2af199525071320f2ec53fca590fbf31ba9c56fd (diff)
Issue #1851886 by Albert Volkman: Fix up documentation for cache_set() function
-rw-r--r--includes/cache.inc69
1 files changed, 28 insertions, 41 deletions
diff --git a/includes/cache.inc b/includes/cache.inc
index 92d4f32..f76164b 100644
--- a/includes/cache.inc
+++ b/includes/cache.inc
@@ -80,43 +80,15 @@ function cache_get_multiple(array &$cids, $bin = 'cache') {
* same name. Other implementations might want to store several bins in data
* structures that get flushed together. While it is not a problem for most
* cache bins if the entries in them are flushed before their expire time, some
- * might break functionality or are extremely expensive to recalculate. These
- * will be marked with a (*). The other bins expired automatically by core.
- * Contributed modules can add additional bins and get them expired
- * automatically by implementing hook_flush_caches().
- *
- * - cache: Generic cache storage bin (used for variables, theme registry,
- * locale date, list of simpletest tests etc).
- *
- * - cache_block: Stores the content of various blocks.
- *
- * - cache field: Stores the field data belonging to a given object.
- *
- * - cache_filter: Stores filtered pieces of content.
- *
- * - cache_form(*): Stores multistep forms. Flushing this bin means that some
- * forms displayed to users lose their state and the data already submitted
- * to them.
- *
- * - cache_menu: Stores the structure of visible navigation menus per page.
- *
- * - cache_page: Stores generated pages for anonymous users. It is flushed
- * very often, whenever a page changes, at least for every node and comment
- * submission. This is the only bin affected by the page cache setting on
- * the administrator panel.
- *
- * - cache path: Stores the system paths that have an alias.
- *
- * - cache update(*): Stores available releases. The update server (for
- * example, drupal.org) needs to produce the relevant XML for every project
- * installed on the current site. As this is different for (almost) every
- * site, it's very expensive to recalculate for the update server.
+ * might break functionality or are extremely expensive to recalculate. The
+ * other bins are expired automatically by core. Contributed modules can add
+ * additional bins and get them expired automatically by implementing
+ * hook_flush_caches().
*
* The reasons for having several bins are as follows:
- *
- * - smaller bins mean smaller database tables and allow for faster selects and
- * inserts
- * - we try to put fast changing cache items and rather static ones into
+ * - Smaller bins mean smaller database tables and allow for faster selects and
+ * inserts.
+ * - We try to put fast changing cache items and rather static ones into
* different bins. The effect is that only the fast changing bins will need a
* lot of writes to disk. The more static bins will also be better cacheable
* with MySQL's query cache.
@@ -125,13 +97,27 @@ function cache_get_multiple(array &$cids, $bin = 'cache') {
* The cache ID of the data to store.
* @param $data
* The data to store in the cache. Complex data types will be automatically
- * serialized before insertion.
- * Strings will be stored as plain text and not serialized.
+ * serialized before insertion. Strings will be stored as plain text and are
+ * not serialized.
* @param $bin
- * The cache bin to store the data in. Valid core values are 'cache_block',
- * 'cache_bootstrap', 'cache_field', 'cache_filter', 'cache_form',
- * 'cache_menu', 'cache_page', 'cache_update' or 'cache' for the default
- * cache.
+ * The cache bin to store the data in. Valid core values are:
+ * - cache: (default) Generic cache storage bin (used for theme registry,
+ * locale date, list of simpletest tests, etc.).
+ * - cache_block: Stores the content of various blocks.
+ * - cache_bootstrap: Stores the class registry, the system list of modules,
+ * the list of which modules implement which hooks, and the Drupal variable
+ * list.
+ * - cache_field: Stores the field data belonging to a given object.
+ * - cache_filter: Stores filtered pieces of content.
+ * - cache_form: Stores multistep forms. Flushing this bin means that some
+ * forms displayed to users lose their state and the data already submitted
+ * to them. This bin should not be flushed before its expired time.
+ * - cache_menu: Stores the structure of visible navigation menus per page.
+ * - cache_page: Stores generated pages for anonymous users. It is flushed
+ * very often, whenever a page changes, at least for every node and comment
+ * submission. This is the only bin affected by the page cache setting on
+ * the administrator panel.
+ * - cache_path: Stores the system paths that have an alias.
* @param $expire
* One of the following values:
* - CACHE_PERMANENT: Indicates that the item should never be removed unless
@@ -141,6 +127,7 @@ function cache_get_multiple(array &$cids, $bin = 'cache') {
* - A Unix timestamp: Indicates that the item should be kept at least until
* the given time, after which it behaves like CACHE_TEMPORARY.
*
+ * @see _update_cache_set()
* @see cache_get()
*/
function cache_set($cid, $data, $bin = 'cache', $expire = CACHE_PERMANENT) {