NAME

       memcached_increment_with_initial - Incrementing and Decrementing Values

SYNOPSIS

       #include <libmemcached/memcached.h>

       memcached_return_t    memcached_increment(memcached_st *ptr,    const    char *key,    size_t key_length,
       uint32_t offset, uint64_t *value)

       memcached_return_t    memcached_decrement(memcached_st *ptr,    const    char *key,    size_t key_length,
       uint32_t offset, uint64_t *value)

       memcached_return_t       memcached_increment_with_initial(memcached_st *ptr,       const       char *key,
       size_t key_length, uint64_t offset, uint64_t initial, time_t expiration, uint64_t *value)

       memcached_return_t       memcached_decrement_with_initial(memcached_st *ptr,       const       char *key,
       size_t key_length, uint64_t offset, uint64_t initial, time_t expiration, uint64_t *value)

       memcached_return_t       memcached_increment_by_key(memcached_st *ptr,       const       char *group_key,
       size_t group_key_length, const char *key, size_t key_length, uint32_t offset, uint64_t *value)

       memcached_return_t       memcached_decrement_by_key(memcached_st *ptr,       const       char *group_key,
       size_t group_key_length, const char *key, size_t key_length, uint32_t offset, uint64_t *value)

       memcached_return_t   memcached_increment_with_initial_by_key(memcached_st *ptr,   const  char *group_key,
       size_t group_key_length,   const   char *key,   size_t key_length,   uint64_t offset,   uint64_t initial,
       time_t expiration, uint64_t *value)

       memcached_return_t   memcached_decrement_with_initial_by_key(memcached_st *ptr,   const  char *group_key,
       size_t group_key_length,   const   char *key,   size_t key_length,   uint64_t offset,   uint64_t initial,
       time_t expiration, uint64_t *value)

       Compile and link with -lmemcached

DESCRIPTION

       memcached(1)  servers  have  the  ability to increment and decrement keys (overflow and underflow are not
       detected). This gives you the ability to use memcached to generate shared sequences of values.

       memcached_increment takes a key and keylength and increments the value by the offset passed  to  it.  The
       value is then returned via the uint32_t value pointer you pass to it.

       memcached_decrement  takes  a  key and keylength and decrements the value by the offset passed to it. The
       value is then returned via the uint32_t value pointer you pass to it.

       memcached_increment_with_initial takes a key and keylength and increments the value by the offset  passed
       to  it.  If  the  object specified by key does not exist, one of two things may happen: If the expiration
       value is MEMCACHED_EXPIRATION_NOT_ADD, the operation will fail. For  all  other  expiration  values,  the
       operation will succeed by seeding the value for that key with a initial value to expire with the provided
       expiration time. The flags will be set to zero.The value is then returned via the uint32_t value  pointer
       you pass to it.

       memcached_decrement_with_initial  takes a key and keylength and decrements the value by the offset passed
       to it. If the object specified by key does not exist, one of two things may  happen:  If  the  expiration
       value  is  MEMCACHED_EXPIRATION_NOT_ADD,  the  operation  will fail. For all other expiration values, the
       operation will succeed by seeding the value for that key with a initial value to expire with the provided
       expiration  time. The flags will be set to zero.The value is then returned via the uint32_t value pointer
       you pass to it.

       memcached_increment_by_key(),  memcached_decrement_by_key(),   memcached_increment_with_initial_by_key(),
       and memcached_decrement_with_initial_by_key() are master key equivalents of the above.

RETURN

       A  value  of type memcached_return_t  is returned.  On success that value will be MEMCACHED_SUCCESS.  Use
       memcached_strerror to translate this value to a printable string.

HOME

       To find out more information please check: http://libmemcached.org/

SEE ALSO

       memcached(1) libmemcached(3) memcached_strerror(3)

AUTHOR

       Brian Aker

COPYRIGHT

       2011, Brian Aker DataDifferential, http://datadifferential.com/