com.googlecode.objectify.cache

Interface MemcacheService

All Known Implementing Classes:

SpyMemcacheService

public interface MemcacheService

The interface that all memory cache services must implement. In theory you could write a redis (or whatnot) based implementation, but this was designed around memcached. The implementation must handle 'null' as a value. Note that memcached doesn't handle this natively; the impl takes care of translating it to something that can be stored.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	MemcacheService.CasPut

Method Summary

Modifier and Type	Method and Description
void	deleteAll(Collection<String> keys)
Object	get(String key)
Map<String,Object>	getAll(Collection<String> keys)
Map<String,IdentifiableValue>	getIdentifiables(Collection<String> keys) For cache implementations that don't handle a cold cache for a key (eg memcached), the implementation of this method needs to hide that behavior (ie, bootstrap an initial value so we can get a CAS value).
void	put(String key, Object thing) Values can be null
void	putAll(Map<String,Object> values) Values can be null
Set<String>	putIfUntouched(Map<String,MemcacheService.CasPut> values) Values can be null

Method Detail

get

Object get(String key)

getIdentifiables

Map<String,IdentifiableValue> getIdentifiables(Collection<String> keys)

For cache implementations that don't handle a cold cache for a key (eg memcached), the implementation of this method needs to hide that behavior (ie, bootstrap an initial value so we can get a CAS value). That doesn't mean the result will always be a value; the bootstrap may fail (for whatever reason) and the resulting map value for a key will be null.

getAll

Map<String,Object> getAll(Collection<String> keys)

put

void put(String key,
         Object thing)

Values can be null

putAll

void putAll(Map<String,Object> values)

Values can be null

putIfUntouched

Set<String> putIfUntouched(Map<String,MemcacheService.CasPut> values)

Values can be null

deleteAll

void deleteAll(Collection<String> keys)