blob: c097d6c6882cbf290045fc1e0df6c3acb0435a2d [file] [log] [blame]
// +build ignore,OMIT
package pkg
// long_tail_memcache_bad
func myHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
// ...
// regular request handling
// ...
go memcache.Set(c, &memcache.Item{
Key: key,
Value: data,
})
}
// long_tail_memcache_good
func myHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
// ...
// regular request handling
// ...
// Save to memcache, but only wait up to 3ms.
done := make(chan bool, 1) // NB: buffered
go func() {
memcache.Set(c, &memcache.Item{
Key: key,
Value: data,
})
done <- true
}()
select { // HL
case <-done: // HL
case <-time.After(3 * time.Millisecond): // HL
} // HL
}