golang实现自定义Cache模型

　　有时候我们在我们自己的项目中需要实现兼容各种驱动的Cache模型,以便于通过配置更换缓存类型。 缓存模型需要支持不同驱动,例如:memory、file、redis、mysql，实现思路代码如下: cache.go文件,定义缓存对外接口模型代码//可以自定义扩展驱动类型 默认是 memory driver   package cache   import ( 	＂./driver＂ )   //cache接口声明 type Cacher interface { 	GetStorage() driver.Containerer 	Set(k string, v interface{}) 	Get(k string) (interface{}, bool) 	Del(k string) 	Has(k string) bool }   //create memory cache //type ＂file＂ or ＂memory＂ func Newcache(cacheType string) Cacher { 	switch cacheType { 	case ＂memory＂: 		return &driver.CacheImpl{Driver: driver.NewMapContainer()} 	case ＂file＂: 		{ 			return &driver.CacheImpl{Driver: driver.NewFileContainer()} 		} 	case ＂mysql＂: 		{ 			return &driver.CacheImpl{Driver: driver.NewMysqlContainer()} 		} 	case ＂redis＂: 		{ 			return &driver.CacheImpl{Driver: driver.NewRedisContainer()} 		} 	case ＂mongodb＂: 		{ 			return &driver.CacheImpl{Driver: driver.NewMongoContainer()} 		} 	} 	return nil }driver.go 实现驱动,这里我只利用Map实现了，具体其他驱动可自行实现//可以自定义扩展驱动类型 默认是 memory cache   package driver   //容器接口声明 type Containerer interface { 	PushKVPair(k, v interface{}) Containerer 	EraseKVPair(k interface{}) Containerer 	PushKVMaps(maps ...map[string]interface{}) Containerer 	ResetKVPair(k string, v interface{}) Containerer 	ResetOrAddKVPair(k string, v interface{}) Containerer 	ResetKVPairs(kvMaps map[string]interface{}) Containerer 	ResetOrAddKVPairs(kvMaps map[string]interface{}) Containerer 	Exist(k interface{}) bool 	GetData() *map[string]interface{} }   //基于内存实现的缓存 type CacheImpl struct { 	Driver Containerer //数据缓存驱动 }   func (self *CacheImpl) Exist(k interface{}) bool {   	return self.Driver.Exist(k) }   func (self *CacheImpl) GetStorage() Containerer { 	return self.Driver }   //set func (self *CacheImpl) Set(k string, v interface{}) { 	self.Driver.PushKVPair(k, v) }   //get func (self *CacheImpl) Get(k string) (interface{}, bool) { 	mapData := *self.Driver.GetData() 	val, ok := mapData[k] 	return val, ok }   //erase func (self *CacheImpl) Del(k string) { 	self.Driver.EraseKVPair(k) }   //has func (self *CacheImpl) Has(k string) bool { 	mapData := *self.Driver.GetData() 	_, ok := mapData[k] 	return ok }   //Map实现的内存驱动 type MapContainer struct { 	data map[string]interface{} }   //创建数据channer func NewMapContainer() *MapContainer { 	return &MapContainer{data: make(map[string]interface{})} }   func (this *MapContainer) PushKVPair(k, v interface{}) Containerer { 	if key, ok := k.(string); !ok { 		panic(＂key必须是string类型!＂) 	} else { 		this.data[key] = v 	} 	return this }   func (this *MapContainer) Exist(k interface{}) bool { 	return true }   func (this *MapContainer) EraseKVPair(k interface{}) Containerer { 	if key, ok := k.(string); !ok { 		panic(＂key必须是string类型!＂) 	} else { 		delete(this.data, key) 	} 	return this } func (this *MapContainer) PushKVMaps(maps ...map[string]interface{}) Containerer { 	for _, itemMap := range maps { 		for itemKey, itemValue := range itemMap { 			this.PushKVPair(itemKey, itemValue) 		} 	} 	return this } func (this *MapContainer) ResetKVPair(k string, v interface{}) Containerer { 	if _, ok := this.data[k]; ok { 		this.data[k] = v 	} 	return this } func (this *MapContainer) ResetOrAddKVPair(k string, v interface{}) Containerer { 	this.data[k] = v 	return this }   func (this *MapContainer) ResetKVPairs(kvMaps map[string]interface{}) Containerer { 	for k, v := range kvMaps { 		if _, ok := this.data[k]; ok { 			this.data[k] = v 		} 	} 	return this }   func (this *MapContainer) ResetOrAddKVPairs(kvMaps map[string]interface{}) Containerer { 	for k, v := range kvMaps { 		this.data[k] = v 	} 	return this }   func (this *MapContainer) GetData() *map[string]interface{} { 	return &this.data }
　　到此一个基础Memory类型的驱动就构建完成 ，我们也可以通过这个模型去构建 redis、mysql等等驱动实现自定义缓存。