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 0.44
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 0.41
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).