10.3. Using the Memcached Interface
10.3.1. Memcached Statistics
The following table contains a list of valid statistics available using the memcached protocol in JBoss Data Grid.
| Statistic | Data Type | Details |
|---|---|---|
| uptime | 32-bit unsigned integer. | Contains the time (in seconds) that the memcached instance has been available and running. |
| time | 32-bit unsigned integer. | Contains the current time. |
| version | String | Contains the current version. |
| curr_items | 32-bit unsigned integer. | Contains the number of items currently stored by the instance. |
| total_items | 32-bit unsigned integer. | Contains the total number of items stored by the instance during its lifetime. |
| cmd_get | 64-bit unsigned integer | Contains the total number of get operation requests (requests to retrieve data). |
| cmd_set | 64-bit unsigned integer | Contains the total number of set operation requests (requests to store data). |
| get_hits | 64-bit unsigned integer | Contains the number of keys that are present from the keys requested. |
| get_misses | 64-bit unsigned integer | Contains the number of keys that were not found from the keys requested. |
| delete_hits | 64-bit unsigned integer | Contains the number of keys to be deleted that were located and successfully deleted. |
| delete_misses | 64-bit unsigned integer | Contains the number of keys to be deleted that were not located and therefore could not be deleted. |
| incr_hits | 64-bit unsigned integer | Contains the number of keys to be incremented that were located and successfully incremented |
| incr_misses | 64-bit unsigned integer | Contains the number of keys to be incremented that were not located and therefore could not be incremented. |
| decr_hits | 64-bit unsigned integer | Contains the number of keys to be decremented that were located and successfully decremented. |
| decr_misses | 64-bit unsigned integer | Contains the number of keys to be decremented that were not located and therefore could not be decremented. |
| cas_hits | 64-bit unsigned integer | Contains the number of keys to be compared and swapped that were found and successfully compared and swapped. |
| cas_misses | 64-bit unsigned integer | Contains the number of keys to be compared and swapped that were not found and therefore not compared and swapped. |
| cas_badvalue | 64-bit unsigned integer | Contains the number of keys where a compare and swap occurred but the original value did not match the supplied value. |
| evictions | 64-bit unsigned integer | Contains the number of eviction calls performed. |
| bytes_read | 64-bit unsigned integer | Contains the total number of bytes read by the server from the network. |
| bytes_written | 64-bit unsigned integer | Contains the total number of bytes written by the server to the network. |
