mono/mcs/class/System.Web/System.Web.Caching/ChangeLog

2010-02-23  Marek Habersack  <[email protected]>

	* CachedVaryBy.cs: made serializable for 4.0+ (necessary for
	extensible output caching)

2010-02-03  Marek Habersack  <[email protected]>

	* OutputCache.cs: DefaultProviderName checks if there was any
	provider configured and, if not, returns a built-in provider's
	name.

	* SqlCacheDependencyAdmin.cs: added

	* OutputCacheProviderCollection.cs: added

	* OutputCacheProvider.cs: added

	* OutputCacheModule.cs: uses the 4.0 extensible output cache
	provider model now (also internally in the 2.0 profile)
	OutputCacheProvider is retrieved on every request using
	HttpApplication.GetOutputCacheProviderName (4.0+). In the 2.0
	profile an instance of InMemoryOutputCacheProvider is always
	returned.

	* InMemoryOutputCacheProvider.cs: default output cache provider
	for ASP.NET 4.0, also used internally in the  2.0 profile.

	* CachedVaryBy.cs: made the generated key shorter

	* CacheItemPriorityQueueDebug.cs: debugging support for
	CacheItemPriorityQueue. Most of the code is compiled only when the
	DEBUG macro is defined. Debugging support includes recording of
	the queue operations sequence which is output to an XML file on
	appdomain shutdown. The recorded sequence files can be used to
	generate NUnit test cases for the priority queue (see
	../Test/tools/README)

	* CacheItemPriorityQueue.cs: rewritten using an array based heap
	instead of a binary tree based one - implementation is simpler,
	faster and more elegant. Heap is initially 32 entries long and
	its size is doubled every time it fills up. After reaching a
	threshold (8192 entries currently) it is shrunk to the number of
	items + 1/3 of item count in order to preserve memory.

	* CacheItem.cs: added a Guid field to easier distinguish items
	(mostly for debugging purposes)

	* CacheDependency.cs: minor performance improvements

	* Cache.cs: better handling of timer periods

2010-01-25  Marek Habersack  <[email protected]>

	* SqlCacheDependency.cs: added parameter checks to the
	constructors.
	Partially implemented 4.0 method CreateOutputCacheDependency

	* CacheItemUpdateReason.cs, CacheItemUpdateCallback.cs: added

	* CacheItem.cs: added OnUpdateCallback field

	* Cache.cs: implemented support for cache item update callback
	(3.5+)

	* AggregateCacheDependency.cs: added undocumented
	DependencyDispose method override

2010-01-22  Marek Habersack  <[email protected]>

	* SubstitutionResponseElement.cs: implemented correct
	(de)serialization of the Callback delegate.

	* OutputCache.cs: implemented Serialize, Deserialize,
	DefaultProviderName and Providers.

2010-01-21  Marek Habersack  <[email protected]>

	* DatabaseNotEnabledForNotificationException.cs, OutputCache.cs,
	FileResponseElement.cs, HeaderElement.cs, IOutputCacheEntry.cs,
	MemoryResponseElement.cs, OutputCacheProvider.cs,
	ResponseElement.cs, OutputCacheProviderCollection.cs,
	SubstitutionResponseElement.cs,
	TableNotEnabledForNotificationException.cs: added

	* CacheDependency.cs: default constructor is protected in 4.0

2010-01-06  Marek Habersack  <[email protected]>

	* CacheItemPriorityQueue.cs: make sure lastParent is never null if
	root is not null in Enqueue. Possible fix for bug #567869

2009-12-01  Marek Habersack  <[email protected]>

	* Cache.cs: ExpireItems dequeues the next item when a disabled
	item is found before continuing to look for items to expire. Fixes
	bug #559470. Patch from Adriaan van Kekem <[email protected]>,
	thanks.

2009-10-21  Marek Habersack  <[email protected]>

	* CacheItemPriorityQueue.cs: lock the queue on enqueue/dequeue

2009-10-20  Marek Habersack  <[email protected]>

	* OutputCacheModule.cs: keysCache and entriesToInvalidate
	dictionaries are allocated only when they are
	required. BuildManager's RemoveEntry envent is subscribed to only
	if cache actually has some entries.
	Added support for post-cache substitution.

	* CachedRawResponse.cs: data is stored in a list of DataItem
	instances instead of just in a single buffer. This enables support
	for post-cache substitution.

2009-10-05  Marek Habersack  <[email protected]>

	* Cache.cs: if item expiration time exceeds the maximum value
	Timer accepts, use the latter - item will expire properly anyway,
	as the timer will be rescheduled for the item's expiration time
	once that item is bubbled to the top of the priority queue. Fixes
	bug #544171

2009-09-26  Marek Habersack  <[email protected]>

	* CacheItemPriorityQueue.cs, CacheItem.cs, CacheItemEnumerator.cs:
	added

	* Cache.cs: factored out CacheItem and CacheItemEnumerator to
	separate files.
	Use reader-writer locks instead of Monitor.
	Added two 3.5sp1 properties - EffectivePrivateBytesLimit and
	EffectivePercentagePhysicalMemoryLimit.
	Added support for disabling cache item expiration.
	One timer is used to expire all timed items (instead of one timer
	per item). Timed items are kept in a priority queue.

2009-03-03  Marek Habersack  <[email protected]>

	* CachedRawResponse.cs: headers are stored in NameValueCollection
	now.

2009-01-09  Marek Habersack  <[email protected]>

	* Cache.cs: System.Threading.Timer.Change takes a long, not an
	int. The maximum value of sliding expiration is 365 days
	(31536000000ms) which fits within the value range of long. The
	previous cast to int might yield negative values in certain
	situations which was the reason for bug #464221. Fixes bug #464221

2008-10-21  Marek Habersack  <[email protected]>

	* OutputCacheModule.cs: seal the class.
	Made OnRawResponseRemoved a static method.

	* CachedVaryBy.cs: seal the class.
	Use portable line terminators instead of literal '\n'.

	* Cache.cs: seal the CacheItem and CacheItemEnumerator classes.

	* CacheDependency.cs: dispose the associated dependency in the
	DependencyDispose method.

	* CachedRawResponse.cs: seal the class

2008-10-15  Marek Habersack  <[email protected]>

	* OutputCacheModule.cs: do not take any action if Response returns
	null from GetCachedResponse.

2008-09-30  Juraj Skripsky  <[email protected]>

	* CachedRawResponse.cs: Don't allocate a 32k buffer that is never 
	used. Fixes enhancement bug #430963.

2008-09-29  Marek Habersack  <[email protected]>

	* OutputCacheModule.cs: invalidate cache entries when the
	corresponding source file (.as?x) is recompiled by hooking up to
	System.Web.Compilation.BuildManager's build cache entry removal
	event. Fixes bug #429926

2008-09-26  Juraj Skripsky  <[email protected]>

	* OutputCacheModule.cs: Consistently use InternalCache for
	CachedRawResponse items and Cache for CachedVaryBy items.
	Partial fix for bug #429926.   

2008-08-11  Marek Habersack  <[email protected]>

	* Cache.cs: dispose item timer when removing an entry. Fixes bug
	#416076. Patch provided by Adriaan van Kekem
	<[email protected]>, thanks!
	Pass onRemoveCallback along in Insert. Fixes bugs #324528 and
	#382644. Patch provided by Juraj Skripsky <[email protected]>,
	thanks!

2008-06-18  Marek Habersack  <[email protected]>

	* SqlCacheDependency.cs: added

2008-05-30  Marek Habersack  <[email protected]>

	* CacheDependency.cs: do not use synthetized event accessors (to
	avoid locks).

2008-05-23  Marek Habersack  <[email protected]>

	* Cache.cs: optimize lock usage

2008-04-28  Marek Habersack  <[email protected]>

	* Cache.cs: refactoring - move the timeout setting code to
	separate methods, so that it can be accessed from outside the
	class. Fixes bug #382644

2008-03-18  Geoff Norton  <[email protected]>

	* Cache.cs:  MS allows calling Insert in a removed handler, we need to
	avoid double locking here otherwise the Insert will never succeed.

2008-02-26  Kornél Pál  <[email protected]>

	* CachedRawResponse.cs, OutputCacheModule.cs: Don't add Date header because
	servers usually add a Date header that would result in duplicate Date header
	sent to the client. Fixes bug #363404.

2007-12-31  Vladimir Krasnov  <[email protected]>

	* Cache.cs: added DependencyCache property, a cache object for
	creating dependencies

2007-12-19  Juraj Skripsky  <[email protected]>

	* Cache.cs: Replace periodic timer (60s) with per-cache-item expiration
	timers.

2007-08-17  Marek Habersack  <[email protected]>

	* CacheDependency.cs: use DependencyChanged as a list of events.
	OnChanged now calls OnDependencyChanged, to notify
	AggregateCacheDependency that it has changed. Fixes bug #82419.

2007-08-14  Marek Habersack  <[email protected]>

	* AggregateCacheDependency.cs: propagate changes in any child
	dependencies to the base class.

2007-06-25 Juraj Skripsky <[email protected]>

	* Cache.cs: Re-introduce "InvokePrivateCallbacks" accidentally
	removed in r80321.

2007-06-20  Marek Habersack  <[email protected]>

	* OutputCacheModule.cs: use Context.InternalCache.

	* Cache.cs: 2.0 profile uses generic containers to keep the cache
	entries.
	Gotten rid of the InsertPrivate and InsertInternal methods. The
	latter was moved to one of the Insert overloads.
	Private entries are no longer handled specifically, because the
	internal cache is now kept in a separate object.
	Iterate over the entries when filling the ArrayList in the 2.0
	profile to avoid type cast exceptions.

2007-05-03 Igor Zelmanovich <[email protected]>

	* AggregateCacheDependency.cs:
	* CacheDependency.cs:	
	added missing API.	

2007-04-10  Marek Habersack  <[email protected]>

	* CacheDependency.cs: add the NotifyFilters.Size to the
	watcher flags, so that we watch for modifications to a file when
	using Linux inotify.

2006-11-29  Marek Habersack  <[email protected]>

	* CachedVaryBy.cs: Make sure that the vary:* header is generated
	only when allowed under the 2.0 profile.

2006-11-25  Marek Habersack  <[email protected]>

	* AggregateCacheDependency.cs: A small code optimization.

2006-11-14 Marek Habersack <[email protected]>

	* Cache.cs:
	* CacheDependency.cs:
	* AggregateCacheDependency.cs: implement this one.

2006-09-11 Andrew Skiba <[email protected]>

	* CacheDependency.cs: ifdef TARGET_JVM

2006-08-03 Gonzalo Paniagua Javier <[email protected]>

	* CacheDependency.cs:
	* Cache.cs: check dependencies on other cache keys. Fixes bug #79002.

2006-03-18  Robert Jordan  <[email protected]>

	* OutputCacheModule.cs: invoke the validation callbacks of
	HttpCachePolicy. Fixes bug #77825.

2006-03-14  Robert Jordan  <[email protected]>

	* CachedVaryBy.cs: Fixed VaryByParam="*". Replaced request.Param
	with QueryString and Form lookups. Made the param name output case
	insensitive. Fixes bug #77757.

2005-10-24 Gonzalo Paniagua Javier <[email protected]>

	* Cache.cs: new internal method.

2005-09-08  Eyal Alaluf  <[email protected]>
	* OutputCacheModule.cs: Use C# 1.0 style of delegate instantiating.
	  Needed to compile Grasshopper (TARGET_J2EE) which uses MS C# 1.0
	  compiler and does not use msc.

2005-09-02 Gonzalo Paniagua Javier <[email protected]>

	* Cache.cs: ignore exceptions thrown by removed item callbacks.

2005-09-02  Sebastien Pouliot  <[email protected]>

	* Cache.cs: Added security permissions with Minimal level for
	AspNetHostingPermissionLevel (only LinkDemand as the class is sealed).
	* CacheDependency.cs: : Added security permissions with Minimal level 
	for AspNetHostingPermissionLevel (note class is sealed only in 1.x).

2005-09-01 Eyal Alaluf <[email protected]>
	* CacheDependency.cs: TARGET_J2EE fixes.

2005-08-20 Gonzalo Paniagua Javier <[email protected]>

	* CacheDependency.cs: add missing ctor.

2005-08-15  Jackson Harper  <[email protected]>

	* CacheItemPriority.cs:
	* CacheItemRemovedCallback.cs:
	* CacheItemRemovedReason.cs: New implementations.

2005-07-30  Miguel de Icaza  <[email protected]>

	* OutputCacheModule.cs: Make synchronous.

2005-07-15 Lluis Sanchez Gual <[email protected]>

	* Cache.cs: New implementation.
	* CacheDependency.cs: New implementation.

2005-06-25 Gonzalo Paniagua Javier <[email protected]>

	* Cache.cs: added new InsertPrivate overload.

2005-06-25 Gonzalo Paniagua Javier <[email protected]>

	* Cache.cs: 
	* CacheEntry.cs: style. Removed doc. comments.

2005-06-08 Ilya Kharmatsky <ilyak-at-mainsoft.com>
	
	* CacheDependency.cs - added TARGET_JVM directives in places,
	  where file watching is using (Mainsoft's implementation currently
	  doesn't support the feature).

2005-05-09 Gonzalo Paniagua Javier <[email protected]>

	* CacheEntry.cs: credits for this patch should go to mcs. it catched
	that the code after 'if ((_enumFlags & Flags.Removed) != 0)' was
	unreachable.

2005-04-28 Gonzalo Paniagua Javier <[email protected]>

	* ExpiresBuckets.cs:
	* Cache.cs:
	* CacheExpires.cs: fix NullReferenceException thrown sometimes when
	using sliding expiration and under high load. Patch by Eyal Alayuf from
	Mainsoft.

2005-04-20 Gonzalo Paniagua Javier <[email protected]>

	* CacheDependency.cs: remove warnings.

2005-04-01 Gonzalo Paniagua Javier <[email protected]>

	* CachedVaryBy.cs: fixed VaryByParam and wildcard (*). Patch by Ilya
	Kharmatsky (Mainsoft) that fixes bug #73981.

2005-04-01  Lluis Sanchez Gual <[email protected]>

	* CachedRawResponse.cs: Fix warning.

2004-11-08 Gonzalo Paniagua Javier <[email protected]>

	* CacheEntry.cs: convert the external DateTime to GMT, as everything
	else uses that timezone. Fixes bug #69194.

2004-10-03 Ben Maurer  <[email protected]>

	* Cache.cs, CacheEntry.cs, CacheExpires.cs, ExpiresBuckets.cs:
	use UtcNow rather than Now.

2004-05-27	Patrik Torstensson <[email protected]>

	* ExpiresBucket.cs (FlushExpiredItems): fix csc and a typo bug

2004-05-27	Patrik Torstensson <[email protected]>

	* CacheEntry.cs,CacheExpires.cs,ExpiresBucket.cs,
	  Cache.cs : Fixed deadlock issues, fixed
	  items not correctly being flushed, fixed update
	  of item when expiration has been updated more
	  than 1 min (placed in wrong bucket), 
	  fixed deadlock during cache callback when item 
	  is removed due to expiriation.
	  
	  Rewrite of locking handling in Cache class, leading
	  to better performance and less bugs.
	  
	  This rewrite is due to a number of bugs found
	  in the output caching during load (leading to memory 
	  leaks and deadlocks)

2004-05-16	Patrik Torstensson <[email protected]>

	* ExpiresBucket.cs: Style changes plus;
	(Update): Fixed possible lock bug (bug 54531)
	(Expand): remove lock optimization due to it can cause newly 
	added items to be lost.
	(Remove): fixed possible lock bug.
		
2004-04-16  Gonzalo Paniagua Javier <[email protected]>

	* Cache.cs: fix from Jan Jaros for NullRef (bug #56996).

2004-04-07  Lluis Sanchez Gual <[email protected]>

	* Cache.cs, CacheEntry.cs, ExpiresBuckets.cs: The value to use to
	specify infinite timeout in ReaderWriterLock is -1, not 0.

2004-03-19  Gonzalo Paniagua Javier <[email protected]>

	* Watcher.cs: Removed file. Jackson made it obsolete and already
	removed it from the .sources file.

2004-02-09  Jackson Harper <[email protected]>

	* ExpiresBucket.cs: Remove duplicate code. Fixes bug #54031.
	
2004-02-09  Jackson Harper <[email protected]>

	* Cache.cs: Close entries that are removed.
	* CacheDependency.cs: Use FileSystemWatcher instead of custom
	Watcher for file dependencies.
	* OutputCacheModule.cs: Make the varyby objects dependent on the
	cached page.
	
2004-02-05  Jackson Harper <[email protected]>

	* CacheDependency.cs: Handle cache keys that have not been added
	to the cache yet.
	
2004-02-02  Jackson Harper <[email protected]>

	* OutputCacheModule.cs: We can use file dependancies now.
	
2004-01-14  Jackson Harper <[email protected]>

	* Cache.cs: Return null when items are expired but have not been
	removed yet.
	* OutputCacheModule.cs: Handle sliding expirations. Remove hacks
	checking if the item is expired, the cache no longer returns
	expired items.
	
2004-01-14  Jackson Harper <[email protected]>

	* Cache.cs: When using sliding expiration update the cache objects
	expires time as well as the expires entry expire time because the
	objects expire time is checked when objects are pulled out. This
	fixex bug #52778.
	
2004-01-11  Jackson Harper <[email protected]>

	* OutputCacheModule.cs: Remove varyby objects when there are no
	more raw responses that belong to them.
	* CachedRawResponse.cs: Keep a reference to the VaryBy object that
	this response belongs to this is so the varyby can be cleaned up.
	* CachedVaryBy.cs: Keep a reference to the keys that belong to the
	varyby and a reference to the varyby's key.
	
2004-01-04  Jackson Harper <[email protected]>

	* OutputCacheModule.cs: Dont cache items when trace is enabled.
	
2004-01-04  Jackson Harper <[email protected]>

	* OutputCacheModule.cs: Update the date header value.
	* CachedRawResponse.cs: Expose a ref to the date header, so it can
	be easily set/updated. Remove unused methods and vars.
	
2004-01-04  Jackson Harper <[email protected]>

	* CacheDependency.cs: Copy all the entries into the entries array,
	set on removed callback for items that we are dependent on.
	* Cache.cs: Add method to get CacheEntry objects.
	* OutputCacheModule.cs: Make raw repsonse entries dependent on 
	their varyby param entries.

2004-01-04  Jackson Harper <[email protected]>

	* OutputCacheModule.cs: VaryBy keys now need the HttpContext not just the request.
	* CachedVaryBy.cs: Handle vary by headers, and vary by custom.
	
2004-01-03  Gonzalo Paniagua Javier <[email protected]>

	* ExpiresBuckets.cs: set _intPos when expanding the array. Fixes bug
	52541. Patch by Jan Jaros ([email protected]).

2003-11-21  Jackson Harper <[email protected]>

	* OutputCacheModule.cs: Only cache a page if it has a 200 status
	code. Fix tabbing.
	* CachedVaryBy.cs: Give raw response keys a name, use the
	httpmethod in the key, and delimit items with \n so it is easier
	to read when debugging.
	
2003-11-21  Jackson Harper <[email protected]>

	* OutputCacheModule.cs: Store a CachedVaryBy object for each
	cached page. Then store a CachedRawResponse for each combination
	of varried parameters for a page.
	* CachedRawResponse.cs: Do not need to store param values anymore
	those are stored in the CachedVaryBy now. Get the content length
	so we dont send back the entire buffer.
	* CachedVaryBy.cs: New file - holds the varyby data for a page,
	and a method to generate a key based on params. Right now this
	only works with VaryByParams. TODO: support VaryByHeaders and
	VaryByCustom.
	
2003-11-20  Jackson Harper <[email protected]>

	* Cache.cs: New method so non public cache items can be added.
	* CachedRawResponse.cs: New file - A snapshot of a response that
	is stored in the cache and can be used to create a new response.
	* OutputCacheModule.cs: Module for inserting and retrieving
	responses from the cache.
	
2003-04-09  Gonzalo Paniagua Javier <[email protected]>

	* CacheDependency.cs:
	* CacheEntry.cs:
	* Watcher.cs: added a FileSystemWatcher-like class for dependency checking.

2003-03-13  Gonzalo Paniagua Javier <[email protected]>

	* Cache.cs:
	* CacheDefinitions.cs:
	* CacheDependency.cs:
	* CacheEntry.cs:
	* CacheExpires.cs:
	* ExpiresBuckets.cs: reformatted, make class status page happier. Does
	not work yet (wait for the next patch).

2002-12-27  Daniel Cazzulino <[email protected]>

	* CacheEntry.cs: several changes. New constants, use of constants
	defined in Cache.cs, modified locks to optimize perf. Fixed property
	sets which weren't using the keyword value to set the new values
	(don't know how this worked before!).

	* Cache.cs: changed singleton implementation to only create the object
	when actually used. Changed Insert overloads to use constants
	defined instead of hard values.

	* ExpiresBuchets: major changes. All locking now uses ReaderWriterLock
	class. Bucket now efectively reuses free indexes from removed items
	to avoid unnecessary expansions. Expansion now uses Array.CopyTo to
	add elements to the new list. Added private Int32Collection to
	handle int indexes efficiently (thanks Shawn Van Ness). See comments
	there.

2002-10-08  Gonzalo Paniagua Javier <[email protected]>

	* Cache.cs: little fixes.

2002-07-28  Gonzalo Paniagua Javier <[email protected]>

	* CacheDefinitions.cs: fixed a couple of enums.

	* CacheDependency.cs: the class is sealed.

2002-06-11  Gonzalo Paniagua Javier <[email protected]>

	* CacheDependency.cs: fixed a couple of typos and don't throw
	NotImplementedException in constructors.

2001-12-21      Gaurav Vaish <[email protected]>

        * CacheDependency.cs:    Some unimplemented methods to make build

2001-07-20	Patrik Torstensson ([email protected])

	* Cache.cs:	Implemented. (90% ready)
	* CacheDefinitions.cs: Implemented.
	* CacheDependency.cs: Added. (20% ready)
	* CacheExpires: Implemented.
	* CacheEntry.cs: Implemented. (95% ready, going to be changed due to CacheDependecy support)
	* ExpiresBuckets.cs: Implemented.