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author | Brian Durand <bdurand@bdurand.local> | 2010-04-21 23:22:05 -0500 |
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committer | Jeremy Kemper <jeremy@bitsweat.net> | 2010-04-27 11:13:37 -0700 |
commit | ee51b51b60f9e6cce9babed2c8a65a14d87790c8 (patch) | |
tree | f5f35d45a6c8df4f3fbe2056f730f0315a036c99 /railties/lib/rails/generators | |
parent | 1d63129eff1e25dd22e182cdef40ec61bf5dde88 (diff) | |
download | rails-ee51b51b60f9e6cce9babed2c8a65a14d87790c8.tar.gz rails-ee51b51b60f9e6cce9babed2c8a65a14d87790c8.tar.bz2 rails-ee51b51b60f9e6cce9babed2c8a65a14d87790c8.zip |
ActiveSupport::Cache refactoring
All Caches
* Add default options to initializer that will be sent to all read, write, fetch, exist?, increment, and decrement
* Add support for the :expires_in option to fetch and write for all caches. Cache entries are stored with the create timestamp and a ttl so that expiration can be handled independently of the implementation.
* Add support for a :namespace option. This can be used to set a global prefix for cache entries.
* Deprecate expand_cache_key on ActiveSupport::Cache and move it to ActionController::Caching and ActionDispatch::Http::Cache since the logic in the method used some Rails specific environment variables and was only used by ActionPack classes. Not very DRY but there didn't seem to be a good shared spot and ActiveSupport really shouldn't be Rails specific.
* Add support for :race_condition_ttl to fetch. This setting can prevent race conditions on fetch calls where several processes try to regenerate a recently expired entry at once.
* Add support for :compress option to fetch and write which will compress any data over a configurable threshold.
* Nil values can now be stored in the cache and are distinct from cache misses for fetch.
* Easier API to create new implementations. Just need to implement the methods read_entry, write_entry, and delete_entry instead of overwriting existing methods.
* Since all cache implementations support storing objects, update the docs to state that ActiveCache::Cache::Store implementations should store objects. Keys, however, must be strings since some implementations require that.
* Increase test coverage.
* Document methods which are provided as convenience but which may not be universally available.
MemoryStore
* MemoryStore can now safely be used as the cache for single server sites.
* Make thread safe so that the default cache implementation used by Rails is thread safe. The overhead is minimal and it is still the fastest store available.
* Provide :size initialization option indicating the maximum size of the cache in memory (defaults to 32Mb).
* Add prune logic that removes the least recently used cache entries to keep the cache size from exceeding the max.
* Deprecated SynchronizedMemoryStore since it isn't needed anymore.
FileStore
* Escape key values so they will work as file names on all file systems, be consistent, and case sensitive
* Use a hash algorithm to segment the cache into sub directories so that a large cache doesn't exceed file system limits.
* FileStore can be slow so implement the LocalCache strategy to cache reads for the duration of a request.
* Add cleanup method to keep the disk from filling up with expired entries.
* Fix increment and decrement to use file system locks so they are consistent between processes.
MemCacheStore
* Support all keys. Previously keys with spaces in them would fail
* Deprecate CompressedMemCacheStore since it isn't needed anymore (use :compress => true)
[#4452 state:committed]
Signed-off-by: Jeremy Kemper <jeremy@bitsweat.net>
Diffstat (limited to 'railties/lib/rails/generators')
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