fix mem leak (#8) (#9)

Author: ariesdevil

dstore/host.go

@@ -169,11 +169,14 @@ func (host *Host) executeWithTimeout(req *mc.Request, timeout time.Duration) (re
 		}
 	}()
 
+	timer := time.NewTimer(timeout)
+	defer timer.Stop()
+
 	select {
 	case <-done:
 		resp = tmpResp
 		err = tmpErr
-	case <-time.After(timeout):
+	case <-timer.C:
 		isTimeout <- true
 		err = fmt.Errorf("request %v timeout", req)
 		logger.Infof("request %v to host %s timeout", req, host.Addr)

go.mod

@@ -2,7 +2,7 @@ module github.com/douban/gobeansproxy
 
 require (
 	github.com/davecgh/go-spew v1.1.0 // indirect
-	github.com/douban/gobeansdb v1.1.0
+	github.com/douban/gobeansdb v1.1.2
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/stretchr/testify v1.2.2
 	gopkg.in/yaml.v2 v2.2.1

go.sum

@@ -1,14 +1,21 @@
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/douban/gobeansdb v1.1.0 h1:Ia659+3inop0LFeS8/aLFM7mEcJ0hdX0fcIGrZC1aDw=
-github.com/douban/gobeansdb v1.1.0/go.mod h1:1Irour4eUljC+P/4aD6qI1z9zWao4IzQYJmfuRqcH7o=
+github.com/douban/gobeansdb v1.1.2 h1:3PbCOWFheciPWc3dgRJF+uUfsorF6RgMN7y4TmyX3Fk=
+github.com/douban/gobeansdb v1.1.2/go.mod h1:lSxWZJgFFUTy4WzcXTVn0g1hvEMwW3InXAUeZngsvMk=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec h1:6ncX5ko6B9LntYM0YBRXkiSaZMmLYeZ/NWcmeB43mMY=
 github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec/go.mod h1:gi+0XIa01GRL2eRQVjQkKGqKF3SF9vZR/HnPullcV2E=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20191011211836-4c025a95b26e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=