Cache Class Reference
Member Enumeration Documentation
| enum DeleteResponse |
| enum StoreResponse |
Constructor & Destructor Documentation
| Cache | ( | CacheStorage | cacheStorage | ) |
Construct the server session handler
- Parameters:
-
cacheStorage the cache to use
Member Function Documentation
| StoreResponse add | ( | MCElement | e | ) |
Add an element to the cache
- Parameters:
-
e the element to add
- Returns:
- the store response code
| StoreResponse append | ( | MCElement | element | ) |
Append bytes to the end of an element in the cache
- Parameters:
-
element the element to append
- Returns:
- the store response code
| StoreResponse cas | ( | Long | cas_key, | |
| MCElement | e | |||
| ) |
Set an element in the cache but only if the element has not been touched since the last 'gets'
- Parameters:
-
cas_key the cas key returned by the last gets e the element to set
- Returns:
- the store response code
| DeleteResponse delete | ( | String | key, | |
| int | time | |||
| ) |
Handle the deletion of an item from the cache.
- Parameters:
-
key the key for the item time an amount of time to block this entry in the cache for further writes
- Returns:
- the message response
| void finishCacheRead | ( | ) | [private] |
Blocks of code in which the contents of the cache are examined in any way must be surrounded by calls to startRead and finishRead. See documentation for ReadWriteLock.
| void finishCacheWrite | ( | ) | [private] |
Blocks of code in which the contents of the cache are changed in any way must be surrounded by calls to startWrite and finishWrite. See documentation for ReadWriteLock.
| boolean flush_all | ( | int | expire | ) |
Flush all cache entries with a timestamp after a given expiration time
- Parameters:
-
expire the flush time in seconds
- Returns:
- command response
| boolean flush_all | ( | ) |
Flush all cache entries
- Returns:
- command response
Get an element from the cache
- Parameters:
-
key the key for the element to lookup
- Returns:
- the element, or 'null' in case of cache miss.
| Integer get_add | ( | String | key, | |
| int | mod | |||
| ) |
Increment an (integer) element inthe cache
- Parameters:
-
key the key to increment mod the amount to add to the value
- Returns:
- the message response
| long getBytesRead | ( | ) |
| long getBytesWritten | ( | ) |
| long getCurrentBytes | ( | ) |
| long getCurrentItems | ( | ) |
| int getGetCmds | ( | ) |
| int getGetHits | ( | ) |
| int getGetMisses | ( | ) |
| long getLimitMaxBytes | ( | ) |
| int getSetCmds | ( | ) |
| int getTotalItems | ( | ) |
| void initStats | ( | ) | [protected] |
Initialize all statistic counters
| boolean isBlocked | ( | MCElement | e | ) | [protected] |
| boolean isExpired | ( | MCElement | e | ) | [protected] |
| boolean isThere | ( | String | key | ) | [protected] |
Check whether an element is in the cache and non-expired and the slot is non-blocked
- Parameters:
-
key the key for the element to lookup
- Returns:
- whether the element is in the cache and is live
| Set<String> keys | ( | ) |
| final int Now | ( | ) | [protected] |
- Returns:
- the current time in seconds (from epoch), used for expiries, etc.
| StoreResponse prepend | ( | MCElement | element | ) |
Prepend bytes to the end of an element in the cache
- Parameters:
-
element the element to append
- Returns:
- the store response code
| void processDeleteQueue | ( | ) |
Executed periodically to clean from the cache those entries that are just blocking the insertion of new ones.
| StoreResponse replace | ( | MCElement | e | ) |
Replace an element in the cache
- Parameters:
-
e the element to replace
- Returns:
- the store response code
| StoreResponse set | ( | MCElement | e | ) |
Set an element in the cache
- Parameters:
-
e the element to set
- Returns:
- the store response code
| void startCacheRead | ( | ) | [private] |
Blocks of code in which the contents of the cache are examined in any way must be surrounded by calls to startRead and finishRead. See documentation for ReadWriteLock.
| void startCacheWrite | ( | ) | [private] |
Blocks of code in which the contents of the cache are changed in any way must be surrounded by calls to startWrite and finishWrite. See documentation for ReadWriteLock. protect the higher layers from implementation details.
Member Data Documentation
long bytesRead [private] |
long bytesWritten [private] |
final ReadWriteLock cacheReadWriteLock [private] |
Read-write lock allows maximal concurrency, since readers can share access; only writers need sole access.
CacheStorage cacheStorage [protected] |
long casCounter [private] |
int currentItems [private] |
DelayQueue<DelayedMCElement> deleteQueue [private] |
final ReadWriteLock deleteQueueReadWriteLock [private] |
int getCmds [private] |
int getHits [private] |
int getMisses [private] |
int setCmds [private] |
int totalItems [private] |
The documentation for this class was generated from the following file:
- /opt/source/Wonder/Frameworks/EOF/ERCaching/Sources/com/thimbleware/jmemcached/Cache.java
