25 lines
498 B
Go
25 lines
498 B
Go
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package web
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import (
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"fmt"
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"net/http"
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"strings"
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"time"
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)
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func CachedServeFunc(h http.HandlerFunc) http.HandlerFunc {
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var etag = fmt.Sprintf(`"%d"`, time.Now().UnixMicro())
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return func(w http.ResponseWriter, r *http.Request) {
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if match := r.Header.Get("If-None-Match"); match != "" {
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if strings.Contains(match, etag) {
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w.WriteHeader(http.StatusNotModified)
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return
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}
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}
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w.Header().Set("Cache-Control", "max-age=60")
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w.Header().Set("ETag", etag)
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h.ServeHTTP(w, r)
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}
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}
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