Class InMemoryCacheProcessor

java.lang.Object

org.frontcache.cache.CacheProcessorBase

org.frontcache.cache.impl.InMemoryCacheProcessor

All Implemented Interfaces:

CacheProcessor

public class InMemoryCacheProcessor
extends CacheProcessorBase
implements CacheProcessor

Field Summary

Fields inherited from class CacheProcessorBase

logger, softInvalidationExecutor

Fields inherited from interface CacheProcessor

CACHE_FOREVER, CACHED_ENTRIES, NO_CACHE

Constructor Summary

Constructors

Constructor	Description
InMemoryCacheProcessor()

Method Summary

Modifier and Type	Method	Description
void	destroy()
List<String>	getCachedKeys()
CacheStats	getCacheStats()	One tier, in memory, so only the L1 entry count is real.
Map<String,String>	getCacheStatus()
WebResponse	getFromCacheImpl(String url)
void	init(Properties properties)
void	patch()
void	purge()	Removes entries whose effective expiration timestamp is in the past.
void	putToCacheImpl(String url, WebResponse component)	Stores the entry.
void	removeFromCache(String filter)
void	removeFromCacheAll()	Removes every entry from this node.

Methods inherited from class CacheProcessorBase

doSoftInvalidation, getFromCache, processRequest, putToCache

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface CacheProcessor

backup, doSoftInvalidation, getCachedKeys, getFromCache, processRequest, putToCache

Constructor Details

InMemoryCacheProcessor

public InMemoryCacheProcessor()

Method Details

init

public void init(Properties properties)

Specified by:

init in interface CacheProcessor

Overrides:

init in class CacheProcessorBase

putToCacheImpl

public void putToCacheImpl(String url,
 WebResponse component)

Description copied from class: CacheProcessorBase

Stores the entry. Called by CacheProcessorBase.putToCache(String, WebResponse) once the headers that must never be persisted (Set-Cookie in particular) have been removed.

Specified by:

putToCacheImpl in class CacheProcessorBase

Parameters:

url - cache key

component - response to store - the cache takes ownership of it

getFromCacheImpl

public WebResponse getFromCacheImpl(String url)

Specified by:

getFromCacheImpl in class CacheProcessorBase

destroy

public void destroy()

Specified by:

destroy in interface CacheProcessor

Overrides:

destroy in class CacheProcessorBase

removeFromCache

public void removeFromCache(String filter)

Specified by:

removeFromCache in interface CacheProcessor

removeFromCacheAll

public void removeFromCacheAll()

Description copied from interface: CacheProcessor

Removes every entry from this node. There used to be a domain-scoped flavour alongside this one. It only dropped entries stamped with the caller's domain, and replicated entries carry the domain of the edge they came from - so an "invalidate all" at the target edge walked straight past them and they stayed served. With one site per node there is one flavour, and it means what it says.

Specified by:

removeFromCacheAll in interface CacheProcessor

getCacheStats

public CacheStats getCacheStats()

One tier, in memory, so only the L1 entry count is real. Evictions are not tracked by this processor and there is no on-disk tier - both stay UNKNOWN rather than being reported as zero, so nobody alerts on a flat line that means "not measured".

Specified by:

getCacheStats in interface CacheProcessor

getCacheStatus

public Map<String,String> getCacheStatus()

Specified by:

getCacheStatus in interface CacheProcessor

Overrides:

getCacheStatus in class CacheProcessorBase

getCachedKeys

public List<String> getCachedKeys()

Specified by:

getCachedKeys in interface CacheProcessor

patch

public void patch()

Specified by:

patch in interface CacheProcessor

purge

public void purge()

Removes entries whose effective expiration timestamp is in the past. "Cache forever" entries are never removed.

Specified by:

purge in interface CacheProcessor