MemCacheClient::ConsistentHash Struct Reference

Maintain the N:1 hash key to server relationship used for consistent hashing. More...

List of all members.

Classes
struct	MatchServer
Public Member Functions
	ConsistentHash (unsigned long aHash, Server *aServer, unsigned aServices, int aEntry)
	ConsistentHash (const ConsistentHash &rhs)
ConsistentHash &	operator= (const ConsistentHash &rhs)
bool	services (unsigned aService)
bool	operator< (const ConsistentHash &rhs) const
Public Attributes
unsigned long	mHash
	hash value
Server *	mServer
	server implementation
unsigned	mServices
	services this server provides
int	mEntry
	distinguish same hash and server
Private Member Functions
bool	operator== (const ConsistentHash &rhs) const

---

Detailed Description

Maintain the N:1 hash key to server relationship used for consistent hashing.

Consistent hashing for the servers ensures that even with changes to the server list, many of the data keys will continue to mapped to the same server. This ensures that changes to the server list doesn't invalidate all cached data.

Definition at line 562 of file MemCacheClient.h.

---

Constructor & Destructor Documentation

MemCacheClient::ConsistentHash::ConsistentHash	(	unsigned long	aHash,
		Server *	aServer,
		unsigned	aServices,
		int	aEntry
	)		[inline]

constructor

Definition at line 569 of file MemCacheClient.h.

MemCacheClient::ConsistentHash::ConsistentHash

(

const ConsistentHash &

rhs

)

[inline]

copy constructor

Definition at line 572 of file MemCacheClient.h.

---

Member Function Documentation

bool MemCacheClient::ConsistentHash::operator<

(

const ConsistentHash &

rhs

)

const

comparison on hash value

Definition at line 213 of file MemCacheClient.cpp.

References MemCacheClient::Server::GetAddress(), mEntry, mHash, mServer, and MemCacheClient::mServer.

ConsistentHash& MemCacheClient::ConsistentHash::operator=

(

const ConsistentHash &

rhs

)

[inline]

copy

Definition at line 574 of file MemCacheClient.h.

References mEntry, mHash, mServer, and mServices.

bool MemCacheClient::ConsistentHash::services

(

unsigned

aService

)

[inline]

does this server handle the required service?

Definition at line 579 of file MemCacheClient.h.

---

The documentation for this struct was generated from the following files:

• MemCacheClient.h
• MemCacheClient.cpp