I can't seem to get the Expiration property to be set:

package main

import (
    // "github.com/bradfitz/gomemcache/memcache" // "io/ioutil"
    "github.com/rainycape/memcache"
    "log"
)

func main() {
    mc, errc := memcache.New("72.2.112.213:11211")
    mc.Set(&memcache.Item{Key: "foo", Value: []byte("my value"), Expiration: 604800})

    it, err := mc.Get("foo")

    log.Print(it.Key)
    log.Print(string(it.Value))
    log.Print(it.Expiration)
    log.Print(err)

}

outputs:

go run mc.go
2016/10/13 08:50:48 foo
2016/10/13 08:50:48 my value
2016/10/13 08:50:48 0
2016/10/13 08:50:48 <nil>

Where I feel it should output 604800 instead of 0.

Note that I see the same issue with bradfitz/gomemcache. Can you help?

P.S. your readme.md example doesn't take into account that memcache.New() now returns multiple values.

go version go1.7.1 darwin/amd64
memcached:1.4.24

1031fa0 does not pass unit test with Go 1.10

+ GOPATH=/builddir/build/BUILD/memcache-1031fa0ce2f20c1c0e1e1b51951d8ea02c84fa05/_build:/usr/share/gocode
+ go test -buildmode pie -compiler gc -ldflags '-extldflags '\''-Wl,-z,relro  '\'''
# github.com/rainycape/memcache
./memcache_test.go:45: Skip call has possible formatting directive %s
FAIL    github.com/rainycape/memcache [build failed]

It is usefull to support memcached append command

$ go get gopkgs.com/memcache.v2

cd .; git clone http://gopkgs.com/memcache.v2 /Users/daniel/go/src/gopkgs.com/memcache.v2

Cloning into '/Users/daniel/go/src/gopkgs.com/memcache.v2'...
fatal: repository 'http://gopkgs.com/memcache.v2/' not found
package gopkgs.com/memcache.v2: exit status 128