--- /dev/null
+# ChangeLog v0.x
+
+## v 0.53
+> released 2011-09-27
+
+* Fix for FreeBSD/OpenBSD and -lm
+* Added memcached_exist()
+* Fix for memory when using config test.
+* CLI gained --quiet
+
+## v 0.52
+> released 2011-09-12
+
+* Build fixes for Ubuntu/Suse.
+* Fixes for OSX Lion.
+* Bug fix for looping back through dns lookups under certain failures.
+* Fixes related to dead server failures.
+
+## v 0.51
+> released 2011-07-21
+
+* memcached_callback_set() now takes its data argument as const
+* Update to tests.
+* Fix in parser for port number.
+
+## v 0.50
+> released 2011-06-20
+
+* Updates to C++ interface
+* Custom free allocators need to now check for value before calling free.
+* memcached_fetch_result() now uses the internal result when available (about 25 to 50% faster).
+* Fix for stats structure.
+* Updates to documentation.
+* memcached_fetch_result() now uses the internal result when available (about 25 to 50% faster).
+
+## v 0.49
+> released 2011-04-14
+
+* Fix calls to auto methods so that if value is not passed in nothing bad happens.
+* New parser calls for generating memcached_st objects.
+* New error system.
+* New flow control for messages means faster get/set calls.
+* Added new documentation system.
+* A behavior change has been now made that if you specify a weight for any server, we enable the weight flag and do weight balancing.
+* Added MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS to simplify the setting of AUTO REJECT for servers.
+
+## v 0.48
+> released 2011-03-16
+
+* Fix memory leak in server parse.
+* Move test framework out to be its own library (easier to work with Gearman).
+
+
+## v 0.47
+> released 2011-02-24
+
+* Additional fixes for OpenBSD.
+* Bug fix 677609, 456080.
+* SIGPIPE fix for Linux send().
+* memcapable can now test ascii or binary based on flags.
+* Additional build fixes for SASL.
+
+
+## v 0.46
+> released 2011-02-14
+
+* Fixes a number of corner case bugs.
+* Fixes related to OpenBSD.
+* Better testing for protocol version.
+* Removes special case infinite wait on blocking setup.
+
+## v 0.45
+> released 2011-02-09
+
+* Add support for systemtap
+
+## v 0.44
+> released 2010-09-23
+
+* Windows bug fixes.
+* Hudson port support in test harness.
+* Improved portability of test hanrness.
+* SASL fixes.
+
+## v 0.43
+> released 2010-07-28
+
+* Added --args to memstat so that a greater range of values can be returned.
+* Prelimanary support for Windows.
+* memcached_stat_execute() merged.
+
+## v 0.42
+> released 2010-07-06
+
+* Mistake in libtool caused issue with library version
+
+## v 0.41
+> released 2010-06-30
+
+* Added --file for memcat.
+* Added limemcached_ping() to libmemcached_util
+* Bugfix for some cases where connect would have issues with timeout.
+* Wrong value for errno given as error on an IO failure inside of poll.
+* Bug fix for issue where multiple interfaces with bad DNS were not being caught.
+
+## v 0.40
+> released 2010-04-23
+
+* Placed retry logic in for busted resolvers
+* Add an ignore for SIGPIPE to solve OSX issues.
+* A couple of fixed for memcached_light server.
+* Updated to debug mode to track io_wait
+
+## v 0.39
+> released 2010-04-06
+
+* Add support for prefix keys to binary protocol.
+* Remove the undocumented call memcached_server_remove().
+* The undocumented call memcached_server_by_key() now returns const.
+* memcached_server_error_reset() has been deprecated.
+* memcached_server_list() has been deprecated. Use memcached_server_cursor() to walk the servers found in a memcached_st() structure.
+* memcached_verbosity() can now be run concurrently with other operations.
+* SASL support.
+* Fixes memory leak found in EJECT HOSTS.
+
+## v 0.38
+> released 2010-02-10
+
+* C++ interface for libhashkit.
+* Modified memcached_set_memory_allocators() so that it requires a context pointer.
+* memcached_clone() now runs 5 times faster.
+* Functions used for callbacks are now given const memcached_st.
+* Added MEMCACHED_BEHAVIOR_CORK.
+* memslap now creates a configuration file at ~/.memslap.cnf
+* memcached_purge() now calls any callbacks registered during get execution.
+* Many fixes to memslap.
+* Updates for memcapable.
+* Compile fixes for OpenBSD.
+* Fix for possible recursive decent on IO failure.
+
+## v 0.37
+> released 2010-01-12
+
+* Fixed build for libhashkit.
+* Fixed install path regression.
+* Modified RPM to strict check install.
+* Added documentation for memcached_server_cursor();
+* Added memcached_servers_reset().
+* Modified memcached_st to remove dead cursor_server member.
+
+## v 0.36
+> released 2010-01-07
+
+* Merged in new memslap utility.
+* All of constants.h has been updated to match style (all old identifiers continue to work).
+* Added first pass for libhashkit.
+* Updated test Framework/extended tests.
+* Random read support during replication added.
+* Modified use_sort so that the option can be applied to any distribution type.
+* We removed the MEMCACHED_BEHAVIOR_KETAMA_COMPAT_MODE added in 0.35. Instead use memcached_behavior_set_distribution().
+
+## v 0.35
+> released 2009-11-09
+
+* Added support for by_key operations for inc/dec methods.
+* Added mget test to memslap.
+* Support for compatible ketama for SpyMemcached
+* Update C++ interface.
+* Fix for memcp
+
+## v 0.34
+> released 2009-10-13
+
+* Added support for setting behavior flags on a connection pool.
+* Don't increment server_failure_counter on normal disconnects.
+* Added prototype for a callback based protocol parser (server side) with examples so that you could let your own application speak the memcached protocol
+* Updated memcapable to test ASCII protocol.
+* Changed behavior so that server can be removed at first sign of failure.
+* Added memcached_server_get_last_disconnect() call
+
+## v 0.33
+> released 2009-09-23
+
+* Added memcapable to test servers for binary compatibility.
+* Updated C++ interface. Added basic support for C++ exceptions. Added multiple constructors the memcached client object. The C++ interface now takes parameters which are C++ types (such as std::string).
+* Several bug fixes for binary protocol support.
+* Fixed crashing issue with dumping from memcachd server (server internals were changed without documenting change).
+
+## v 0.32
+> released 2009-09-15
+
+* Change of behavior where linger is only modified for no-block and then it is set to zero.
+* Added Twitter's memcached_server_error() functions.
+* Fix for OSX compiles in development builds.
+* Updated C++ interface.
+* Updated memcached_mget and memcached_mget_by_key to take a size_t as a parameter instead of an unsigned int for number_of_keys.
+
+## v 0.31
+> released 2009-07-10
+
+* Added support or HA via replication.
+* malloc() removed for server key usage.
+* Update build system.
+* Added support for memcached_set_memory_allocators().
+* Fixed bug in configure.ac for have_htoll.
+
+## v 0.30
+> released 2009-06-01
+
+* Added memcachd_dump command (and framework for memdump tool).
+* Realigned all structures to remove padding (and line up important bits for 64bit caches.
+* Remove some of sprintf() in storage calls().
+* Removed printf() in stat call for unknown stat member.
+* memcached_generate_hash() function added.
+* Added tests to make sure all hash functions are stable.
+
+## v 0.29
+> released 2009-05-19
+
+* Fixed malloc usage to calloc for spots where we need zero filled memory.
+* All code warnings now treated as errors.
+* Fixes for debian packaging.
+* Added new pooling mechanism.
+* MEMCACHED_BEHAVIOR_NO_BLOCK no longer also sets MEMCACHED_BEHAVIOR_BUFFER_REQUESTS.
+* Updated generic rpm.
+
+## v 0.28
+> released 2009-04-15
+
+* Fixed bug in init sructure (reapplied)
+* Fixed bug in get/set by key (nikkhils@gmail.com)
+
+## v 0.27
+> released 2009-03-30
+
+* Added new UDP fire-forget mode.
+* Reworked performance for mget() to better make use of async protocol
+* Cleaned up execution of fetch (just one set of code now)
+* Fixed Jenkin's for big endian hosts.
+* Updates for memstat to determine network latency.
+* Updates for binary protocol.
+* Many updates to documentation.
+
+## v 0.26
+> released 2009-01-29
+
+* Fix for decrement on hash key
+* Fixed assert that was catching bad memset() call in host_reset()
+* Fix purge issue for blocked IO which has been stacked.
+
+## v 0.25
+> released 2008-11-28
+
+* Jenkins HASH added.
+* Update of Murmur hash code
+* Support explicit weights (Robey Pointer, Evan Weaver)
+* Bugfix for ketama continuum (Robey Pointer)
+* New behavior MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY (Robey Pointer)
+* Don't ever call stats for weighting servers, because it is unstable.
+
+## v 0.24
+> released 2008-09-16
+
+* Cleanup compile warnings.
+* Fix issues in partitioning by keys.
+* Fixed "fail case" to make sure when calling memcached_clone() no memcached_st is over written.
+* New memcached_server_by_key() method for finding a server from a key.
+* memcached_server_free() was added for freeing server structures.
+
+
+## v 0.23
+> released 2008-09-07
+
+* Added strings.h header for Solaris 9
+* Solaris 64bit fix.
+* Support for weighted Ketama from Yin Chen.
+* Fix for Chinese
+* Fix for 0 length key to trigger bad key.
+* Added behaviors MEMCACHED_BEHAVIOR_SND_TIMEOUT, MEMCACHED_BEHAVIOR_RCV_TIMEOUT
+* Support for Binary Protocol added
+
+## v 0.22
+> released 2008-07-14
+
+* Fix where master key was no being checked for "bad key"
+* Fixed bugs in stats output (thread output was wrong)
+* Clarified MEMCACHED_BAD_KEY_PROVIDED is return for bad prefix key.
+* Found a bug in Flags return (Jacek Ostrowski)
+* Fixed issue with compiling on Visual Studio
+
+## v 0.21
+> released 2008-05-24
+
+* Change of char * to const char * for all key based functions.
+* New MEMCACHED_CALLBACK_PREFIX_KEY added. You can now create domains for values.
+* Fixed bug introducd in last version on memcp
+* Fix for death of file io to call shutdown()
+
+## v 0.20
+> released 2008-05-05
+
+* New consistent distribution tests.
+* Found a memory leak when a server constantly fails.
+* Fix in watchpoint macro
+* Changed default timeout to 1 second for poll timeouts
+* Wheel uses less memory/dynamic allocation for size (no longer limited to 512 hosts by default.
+* memslap memory leak fix
+* Added Ketama distribution
+* Fix assert.h compile problem on CentOS
+
+## v 0.19
+> released 2008-04-09
+
+* Documentation fix in libmemcached.
+* Fixed bug where sort was always occuring on hosts
+* Logic fix in branch prediction (thanks Jay!)
+* Read through cached support.
+* Fixed for cas by key operation.
+* Fix for memcached_server_st list structures to have correct count.
+* Added callback MEMCACHED_CALLBACK_DELETE_TRIGGER
+* Removed function call in favor of macro (aka cut out some instructions)
+
+
+## v 0.18
+> released 2008-03-17
+
+* Fix plus tests for non-zero value objects and flags.
+* MEMCACHED_HASH_MURMUR added for murmur algorithm provided.
+* MEMCACHED_BEHAVIOR_RETRY_TIMEOUT added to keep connecting from looping on timeout.
+* gcc branch prediction optimizations
+* Refactored entire tree to make include files cleaner
+* Fixed leaked socket.
+
+## v 0.17
+> released 2008-02-27
+
+* MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT added for connect timeout in non-block mode.
+* Incompatible change in memcached_behavior_set() api. We now use a uint64_t, instead of a pointer.
+* Fix for storage of values for zero.
+* memcached_server_cursor() function added to API for cycling through servers.
+
+## v 0.16
+> released 2008-02-18
+
+* Work on the UDP protocol
+* Added get_by_key, set_by_key tests for C++ API
+* Fix for limit_maxbytes to be 64bit in stats
+* Added Atom Smasher test (scale baby, scale!)
+* Servers are now sorted, meaning that servers are now ordered so that clients with the same lists, will have same distribution. (Idea from Ross McFarland). MEMCACHED_BEHAVIOR_SORT_HOSTS was added to enable this support.
+* Added MEMCACHED_BAD_KEY_PROVIDED error for auto, set, and get operations. MEMCACHED_BEHAVIOR_VERIFY_KEY was added to enable this feature.
+* More error messages on command line tools.
+* Fixed bugs in memcached_cas() operator.
+* Fix to loop through interfaces
+
+## v 0.15
+> released 2008-01-29
+
+* More work on the C++ API.
+* Bug fixes around block corner cases.
+* Slight performance increase in both read() and write().
+
+## v 0.14
+> released 2008-01-22
+
+* For for bug found by Evan Weaver where increment() was not returning propper error of value was not found.
+* Fix for bad null pointer on flag by Toru Maesaka.
+* Refactor of all IO to just pass in the active server
+* Problem configuring (PKG_CHECK_MODULES) fixed by removal of "rpath" in support/libmemcached.pc.in (Thanks to Ross McFarland).
+* Added memcached_callback_get()/set()
+* First prototype of C++ interface
+* Updated docs for uint16_t changes in previous release
+
+## v 0.13
+> released 2008-01-13
+
+* MEMCACHED_BEHAVIOR_USER_DATA added to store user pointer.
+* Fix for failure to connect to invalidate socket.
+* Patch from Marc Rossi to add --hash option for memcp, memrm, and memcat.
+* Kevin's patch for fixing EOF issues during a read.
+* Toru Maesaka patch for stats mismatch
+* Fix for when CRC return 0
+* Fixed uint16_t issues around flags. Turns out the documentation on the protocol was wrong.
+* Lingering socket fixes for FreeBSD.
+* Patches from Kevin Dalley for FreeBSD 4.0
+* Added multi delete functions.
+* All get key returns have C style null termination
+* If memcached_server_list_append is passed NULLs instead of pointers it returns NULL.
+* Added memcached_fetch_execute() method
+* Found a bug where memcached_fetch() was not null terminating the result value.
+* memcached_behavior() now has the ability to set "buffering" so that data is not automatically flushed.
+* Behavior change, buffered commands now return MEMCACHED_BUFFERED
+
+## v 0.12
+> released 2007-12-11
+
+* Updates for consistent hashing
+* IPV6 support
+* Static allocation for hostname (performance)
+* Fixed bug where in non-block mode all data might not have been sent on close().
+* Refactor of memcached_get() to use common code.
+* Change in value fetch, MEMCACHED_END is now returned when keys are no longer in the pipe.
+* Fixed bug where key could be out of range of characters
+* Added _by_key() methods to allow partitioning of values to particular servers.
+* MEMCACHED_DEFAILT_TIMEOUT is now set to a non -1 value.
+* Performance improvements in get operations.
+
+## v 0.11
+> released 2007-11-26
+
+* Added option to memcache_behavior_set() so that poll() can be timed out.
+* Fixed memory leak in case of using memcached_fetch_result() where no value was returned.
+* Bug fixed in memcached_connect() which would cause servers that did not need to be enabled to be enabled (performance issue).
+* Rewrote bounds checking code for get calls.
+* "make test" now starts its own memcached servers.
+* Added Hseih hash (MEMCACHED_HASH_HSIEH), which is showing about 7% performance over standard hash.
+
+## v 0.10
+> released 2007-11-21
+
+* Added append binary test.
+* Added MEMCACHED_BEHAVIOR_CACHE_LOOKUPS behavior so that you can save on multiple DNS lookups.
+* Added CAS support, though this is optional and must be enabled during runtime.
+* Added the utility memerror to create human readable error strings from memcached errors (aka convert ints to strings)
+* Fixed type in MEMCACHED_HOST_LOOKUP_FAILURE
+* Fixed bug where hostname might not be null terminated
+* Moved to using gethostbyname_r() on Linux to solve thread safety issue
+* Added -rpath support for pkg-config
+* Documentation fix for hash setting using memcached_behavior_set()
+
+## v 0.9
+> released 2007-11-15
+
+* fix for when no servers are definied.
+* different buffers are now kept for different connections to speed up async efforts
+* Modified increment/decrement functions to return uint64_t values
+* Fixed bug in cases where zero length keys were provided
+* Thread cleanup issue in memslap
+* No hostname lookup on reconnect
+* Fix for flag settings (was doing hex by accident!)
+* Support for 1.2.4 server additions "prepend" and "append" added.
+* Added memcached_version()... not sure if I will make this public or not.
+
+## v 0.8
+> released 2007-11-05
+
+* Adding support for CRC hash method
+* Adding support for UNIX sockets
+* Added additional HASHing methods of FNV1_64,FNV1A_64, FNV1_32, FNV1A_32
+* Added pkgconfig support (PKG_CHECK_MODULES)
+* Fixed conflict with defined type in MySQL
+* Added memcached_result_st structure and functions to manipulate it.
+
+## v 0.7
+> released 2007-10-30
+
+* Poved to poll() from select()
+* Fixes in internal string class for allocation of large numbers of strings.
+* memcached_mget() function now sends keys as it parses them instead of building strings as it goes.
+* Propper flush now for making sure we get all IO sent even when in non-block mode.
+* Added --enable-debug rule for configure
+* All asserts() removed (hey this is going into production!)
+
+
+## v 0.6
+> released 2007-10-17
+
+* get value returns are now null terminated (request by Cal Heldenbrand)
+* Fixed connections for more hosts then two.
+* Rewrite of the read/write IO systems to handle different sorts of host failures.
+* Added man pages for all functions and tools
+* Raised buffer size for readinng/writing to 16K
+* You can now optionally set the socket size for recv/send via memached_behavior_set/get.
+
+## v 0.5
+> released 2007-10-09
+
+* Ruby maintainer mentioned TCP_NODELAY patch he had added. Added this to C
+ library as well. (Eric Hodel drbrain@segment7.net)
+* Added support script for set_benchmark
+* Updated memslap to allow testing of TCP_NODELAY
+* Updated memslap to support --flush (aka dump memcache servers before testing)
+* Fixed bug in multiple hosts not being activated
+* Added environmental variable MEMCACHED_SERVERS which can be used to set the servers list.
+* fixed memcached_stat method (and now memstat works)
+* server connect now happens on demand.
+* Help for all command line applications
+
+## v 0.4
+> released 2007-10-03
+
+* Added buffered IO to write calls for keys
+* Added buffered IO for reads
+* memstat was broken (bad if/else on connect)
+* New non-blocking IO (not default yet). Mucho faster
+* Refactor of test system.
+* memslap crash solved
+
+## v 0.3
+> released 2007-10-01
+
+* Jeff Fisher <guppy@techmonkeys.org> provided a spec file
+* Added "make rpm" around dist file
+* Added support for Solaris
+* Added support for DTrace
+* Fixed read to be recv and write to be send
+* Bug fix where memstat would core if no server was found
+* Added memslap tool (load generator)
+* Numerous bug fixes in library
+* Added calls to library for creating host lists (see text cases to understand how to use this).
+
+## v 0.2
+> released 2007-09-27
+
+* First public version
projects / awesomized / libmemcached / blobdiff