support periodically cleaning up expired tokens

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/gin-contrib/cache v1.3.0
 	github.com/gin-contrib/gzip v1.0.1
 	github.com/gin-gonic/gin v1.10.0
+	github.com/go-co-op/gocron/v2 v2.11.0
 	github.com/go-playground/validator/v10 v10.22.0
 	github.com/go-sql-driver/mysql v1.8.1
 	github.com/golang-jwt/jwt/v5 v5.2.1
@@ -49,6 +50,7 @@ require (
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/gomodule/redigo v1.8.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
+	github.com/jonboulle/clockwork v0.4.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.17.9 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.8 // indirect
@@ -61,6 +63,7 @@ require (
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/robfig/cron/v3 v3.0.1 // indirect
 	github.com/robfig/go-cache v0.0.0-20130306151617-9fc39e0dbf62 // indirect
 	github.com/rs/xid v1.5.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
@@ -69,6 +72,7 @@ require (
 	github.com/ugorji/go/codec v1.2.12 // indirect
 	github.com/xrash/smetrics v0.0.0-20240521201337-686a1a2994c1 // indirect
 	golang.org/x/arch v0.8.0 // indirect
+	golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8 // indirect
 	golang.org/x/net v0.26.0 // indirect
 	golang.org/x/sys v0.23.0 // indirect
 	golang.org/x/text v0.17.0 // indirect