Cleanup of behaviors around ketama

[awesomized/libmemcached] / docs / memcached_behavior.pod

diff --git a/docs/memcached_behavior.pod b/docs/memcached_behavior.pod
index 25986cdf9082fdba76406d70fd082be2828c0dcb..c33b2af59a4d9330997eb22efc05aabbd9cf99d0 100755 (executable)
--- a/docs/memcached_behavior.pod
+++ b/docs/memcached_behavior.pod
@@ -10,14 +10,14 @@ C Client Library for memcached (libmemcached, -lmemcached)
 
   #include <memcached.h>
 
-  unsigned long long
+  uint64_t
     memcached_behavior_get (memcached_st *ptr,
                             memcached_behavior flag);
 
   memcached_return
     memcached_behavior_set (memcached_st *ptr,
                             memcached_behavior flag,
-                            void *data);
+                            uint64_t data);
 
 =head1 DESCRIPTION
 
@@ -51,7 +51,8 @@ environments).
 
 =item MEMCACHED_BEHAVIOR_HASH
 
-Makes the default hashing algorithm for keys use MD5. The value can be set to either MEMCACHED_HASH_DEFAULT, MEMCACHED_HASH_MD5, MEMCACHED_HASH_CRC, MEMCACHED_HASH_FNV1_64, MEMCACHED_HASH_FNV1A_64, MEMCACHED_HASH_FNV1_32, MEMCACHED_HASH_FNV1A_32, MEMCACHED_HASH_KETAMA. The behavior for all hashes but MEMCACHED_HASH_DEFAULT is identitical to the Java driver written by Dustin Sallings.
+Makes the default hashing algorithm for keys use MD5. The value can be set
+to either MEMCACHED_HASH_DEFAULT, MEMCACHED_HASH_MD5, MEMCACHED_HASH_CRC, MEMCACHED_HASH_FNV1_64, MEMCACHED_HASH_FNV1A_64, MEMCACHED_HASH_FNV1_32, and MEMCACHED_HASH_FNV1A_32. The behavior for all hashes but MEMCACHED_HASH_DEFAULT is identitical to the Java driver written by Dustin Sallings.
 
 =item MEMCACHED_BEHAVIOR_DISTRIBUTION
 
@@ -59,7 +60,9 @@ Using this you can enable different means of distributing values to servers.
 The default method is MEMCACHED_DISTRIBUTION_MODULA. You can enable
 consistent hashing by setting MEMCACHED_DISTRIBUTION_CONSISTENT. 
 Consistent hashing delivers better distribution and allows servers to be 
-added to the cluster with minimal cache losses. 
+added to the cluster with minimal cache losses. Currently
+MEMCACHED_DISTRIBUTION_CONSISTENT is an alias for the value
+MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA.  
 
 =item MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
 
@@ -69,6 +72,11 @@ Memcached can cache named lookups so that DNS lookups are made only once.
 
 Support CAS operations (this is not enabled by default at this point in the server since it imposes a slight performance penalty).
 
+=item MEMCACHED_BEHAVIOR_KETAMA
+
+Sets the default distribution to MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
+and the hash to MEMCACHED_HASH_MD5.
+
 =item MEMCACHED_BEHAVIOR_POLL_TIMEOUT
 
 Modify the timeout value that is used by poll(). The default value is -1. An signed int pointer must be passed to memcached_behavior_set() to change this value. For memcached_behavior_get() a signed int value will be cast and returned as the unsigned long long.
@@ -88,13 +96,33 @@ action that gets data causes this buffer to be be sent to the remote
 connection. Quiting the connection or closing down the connection will also
 cause the buffered data to be pushed to the remote connection. 
 
+=item MEMCACHED_BEHAVIOR_VERIFY_KEY
+
+Enabling this will cause libmemcached(3) to test all keys to verify that they 
+are valid keys.
+
+=item MEMCACHED_BEHAVIOR_SORT_HOSTS
+
+Enabling this will cause hosts that are added to be placed in the host list in 
+sorted order. This will defeat consisten hashing.
+
+=item MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
+
+In non-blocking mode this changes the value of the timeout during socket
+connection.
+
 =back
 
 =head1 RETURN
 
 memcached_behavior_get() returns either the current value of the get, or 0
 or 1 on simple flag behaviors (1 being enabled). memcached_behavior_set()
-returns whether or not the behavior was enabled.
+returns failure or success.
+
+=head1 NOTES
+
+memcached_behavior_set() in version .17 was changed from taking a pointer
+to data value, to taking a uin64_t. 
 
 =head1 HOME