memcache.go
func (c *Client) GetMulti(keys []string) (map[string]*Item, error) {
	keyMap := make(map[*Addr][]string)
	for _, key := range keys {
		addr, err := c.servers.PickServer(key)
		if err != nil {
			return nil, err
		}
		keyMap[addr] = append(keyMap[addr], key)
	}

	var chs []chan *Item
	for addr, keys := range keyMap {
		ch := make(chan *Item)
		chs = append(chs, ch)
		go func(addr *Addr, keys []string, ch chan *Item) {
			defer close(ch)
			cn, err := c.getConn(addr)
			if err != nil {
				return
			}
			defer c.condRelease(cn, &err)
			for _, k := range keys {
				if err = c.sendConnCommand(cn, k, cmdGetKQ, nil, 0, nil); err != nil {
					return
				}
			}
			if err = c.sendConnCommand(cn, "", cmdNoop, nil, 0, nil); err != nil {
				return
			}
			var item *Item
			for {
				item, err = c.parseItemResponse("", cn, false)
				if item == nil || item.Key == "" {
					// Noop response
					break
				}
				ch <- item
			}
		}(addr, keys, ch)
	}

	m := make(map[string]*Item)
	for _, ch := range chs {
		for item := range ch {
			m[item.Key] = item
		}
	}
	return m, nil
}
func (c *Client) GetMulti(keys []string) (map[string]*Item, error) {
	keyMap := make(map[*Addr][]string)
	for _, key := range keys {
		addr, err := c.servers.PickServer(key)
		if err != nil {
			return nil, err
		}
		keyMap[addr] = append(keyMap[addr], key)
	}

	var chs []chan *Item
	for addr, keys := range keyMap {
		ch := make(chan *Item)
		chs = append(chs, ch)
		go func(addr *Addr, keys []string, ch chan *Item) {
			defer close(ch)
			cn, err := c.getConn(addr)
			if err != nil {
				return
			}
			defer c.condRelease(cn, &err)
			for _, k := range keys {
				if err = c.sendConnCommand(cn, k, cmdGetKQ, nil, 0, nil); err != nil {
					return
				}
			}
			if err = c.sendConnCommand(cn, "", cmdNoop, nil, 0, nil); err != nil {
				return
			}
			var item *Item
			for {
				item, err = c.parseItemResponse("", cn, false)
				if item == nil || item.Key == "" {
					// Noop response
					break
				}
				ch <- item
			}
		}(addr, keys, ch)
	}

	m := make(map[string]*Item)
	for _, ch := range chs {
		for item := range ch {
			m[item.Key] = item
		}
	}
	return m, nil
}
func ( c * Client ) GetMulti ( keys [ ] string ) ( map [ string ] * Item , error ) { keyMap := make ( map [ * Addr ] [ ] string ) for _ , key := range keys { addr , err := c . servers . PickServer ( key ) if err != nil { return nil , err } keyMap [ addr ] = append ( keyMap [ addr ] , key ) } var chs [ ] chan * Item for addr , keys := range keyMap { ch := make ( chan * Item ) chs = append ( chs , ch ) go func ( addr * Addr , keys [ ] string , ch chan * Item ) { defer close ( ch ) cn , err := c . getConn ( addr ) if err != nil { return } defer c . condRelease ( cn , & err ) for _ , k := range keys { if err = c . sendConnCommand ( cn , k , cmdGetKQ , nil , 0 , nil ) ; err != nil { return } } if err = c . sendConnCommand ( cn , " " , cmdNoop , nil , 0 , nil ) ; err != nil { return } var item * Item for { item , err = c . parseItemResponse ( " " , cn , false ) if item == nil || item . Key == " " { // Noop response break } ch <- item } } ( addr , keys , ch ) } m := make ( map [ string ] * Item ) for _ , ch := range chs { for item := range ch { m [ item . Key ] = item } } return m , nil }
// GetMulti is a batch version of Get. The returned map from keys to
// items may have fewer elements than the input slice, due to memcache
// cache misses. Each key must be at most 250 bytes in length.
// If no error is returned, the returned map will also be non-nil.
GetMulti is a batch version of Get . The returned map from keys to items may have fewer elements than the input slice due to memcache cache misses . Each key must be at most 250 bytes in length . If no error is returned the returned map will also be non - nil .