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Move cache Keys to 64bit for a better dispersion and lower collision frequency (#2077)

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* - change Key for cache to 64bits.

* - change Key for cache to 64bits.
This commit is contained in:
Francois Tur
2018-08-31 17:26:43 -04:00
committed by Yong Tang
parent d00e8c3918
commit 4c6c9d4b27
6 changed files with 43 additions and 41 deletions
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6
plugin/pkg/singleflight/singleflight.go
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@@ -31,17 +31,17 @@ type call struct {
// units of work can be executed with duplicate suppression.
type Group struct {
mu sync.Mutex // protects m
m map[uint32]*call // lazily initialized
m map[uint64]*call // lazily initialized
}
// Do executes and returns the results of the given function, making
// sure that only one execution is in-flight for a given key at a
// time. If a duplicate comes in, the duplicate caller waits for the
// original to complete and receives the same results.
func (g *Group) Do(key uint32, fn func() (interface{}, error)) (interface{}, error) {
func (g *Group) Do(key uint64, fn func() (interface{}, error)) (interface{}, error) {
g.mu.Lock()
if g.m == nil {
g.m = make(map[uint32]*call)
g.m = make(map[uint64]*call)
}
if c, ok := g.m[key]; ok {
g.mu.Unlock()