30 lines
360 B
Go
30 lines
360 B
Go
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package main
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import (
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"fmt"
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"log"
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"net/http"
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"sync"
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)
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var (
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counter int
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mu sync.Mutex
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)
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func main() {
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http.HandleFunc("/", handler)
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log.Fatal(http.ListenAndServe("localhost:8000", nil))
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}
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func handler(w http.ResponseWriter, r *http.Request) {
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var i int
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mu.Lock()
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i = counter
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counter++
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mu.Unlock()
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fmt.Fprintf(w, "counter = %d\n", i)
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}
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