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memcached_callback_set() changes the function/structure assigned by a
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callback flag. No connections are reset.
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You can use MEMCACHED_CALLBACK_USER_DATA to provide custom context if required for any
60
You can use MEMCACHED_CALLBACK_USER_DATA to provide custom context if required for any of the callbacks.
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.B MEMCACHED_CALLBACK_CLEANUP_FUNCTION
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When memcached_delete() is called this function will be excuted. At the
68
point of its execution all connections have been closed.
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When memcached_delete() is called this function will be excuted. At the point of its execution all connections are closed.
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69
.B MEMCACHED_CALLBACK_CLONE_FUNCTION
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72
When memcached_delete() is called this function will be excuted. At the
75
point of its execution all connections have been closed.
73
point of its execution all connections are closed.
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.B MEMCACHED_CALLBACK_PREFIX_KEY
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You can set a value which will be used to create a domain for your keys.
82
The value specified here will be prefixed to each of your keys. The value can not
83
be greater then MEMCACHED_PREFIX_KEY_MAX_SIZE \- 1 and will reduce MEMCACHED_MAX_KEY by
84
the value of your key. The prefix key is only applied to the primary key,
85
not the master key. MEMCACHED_FAILURE will be returned if no key is set. In the case
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of a key which is too long MEMCACHED_BAD_KEY_PROVIDED will be returned.
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The value specified here will be prefixed to each of your keys. The value can not be greater then MEMCACHED_PREFIX_KEY_MAX_SIZE \- 1 and will reduce MEMCACHED_MAX_KEY by the value of your key.
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The prefix key is only applied to the primary key, not the master key. MEMCACHED_FAILURE will be returned if no key is set. In the case of a key which is too long, MEMCACHED_BAD_KEY_PROVIDED will be returned.
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If you set a value with the value being NULL then the prefix key is disabled.
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87
.B MEMCACHED_CALLBACK_USER_DATA
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This allows you to store a pointer to a specifc piece of data. This can be
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91
retrieved from inside of memcached_fetch_execute(). Cloning a memcached_st
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92
will copy the pointer to the clone.
100
95
.B MEMCACHED_CALLBACK_MALLOC_FUNCTION
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98
DEPRECATED: use memcached_set_memory_allocators instead.
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101
.B MEMCACHED_CALLBACK_REALLOC_FUNCTION
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104
DEPRECATED: use memcached_set_memory_allocators instead.
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107
.B MEMCACHED_CALLBACK_FREE_FUNCTION
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DEPRECATED: use memcached_set_memory_allocators instead.
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113
.B MEMCACHED_CALLBACK_GET_FAILURE
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This function implements the read through cache behavior. On failure of retrieval this callback will be called.
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You are responsible for populating the result object provided. This result object will then be stored in the server and
122
returned to the calling process. You must clone the memcached_st in order to
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You are responsible for populating the result object provided. This result object will then be stored in the server and returned to the calling process.
120
You must clone the memcached_st in order to
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121
make use of it. The value will be stored only if you return
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MEMCACHED_SUCCESS or MEMCACHED_BUFFERED. Returning MEMCACHED_BUFFERED will
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cause the object to be buffered and not sent immediatly (if this is the default behavior based on your connection setup this will happen automatically).
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The prototype for this is:
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memcached_return_t (*memcached_trigger_key)(memcached_st *ptr, char *key, size_t key_length, memcached_result_st *result);
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.B MEMCACHED_CALLBACK_DELETE_TRIGGER
added
removed
docs/man/memcached_callback_get.3
