On May 19, 11:50 am, ram <[email protected]> wrote: > yes I did but does the document talk of what should be the offset > etc ? > > .. for a novice programmer , I think it will be helpful to get a > sample code.
I'm pasting code and text directly from the documentation you linked to. I'm not sure how to explain it more clearly. What part is confusing? 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 unsigned int 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 unsigned int 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 unsigned int 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 unsigned int 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.
