micro/selector/cache/options.go

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package cache
import (
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"context"
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"time"
"github.com/micro/go-micro/selector"
)
type ttlKey struct{}
// Set the cache ttl
func TTL(t time.Duration) selector.Option {
return func(o *selector.Options) {
if o.Context == nil {
o.Context = context.Background()
}
o.Context = context.WithValue(o.Context, ttlKey{}, t)
}
}