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2b5e4b853c
* Remove lock for cached operations. * Rename "Relax" to `ReturnLastGood`. * Add `CacheError` to allow caching values even on errors. * Add NoWait that will return current value with async fetching if within 2xTTL. * Make benchmark somewhat representative. ``` Before: BenchmarkCache-12 16408370 63.12 ns/op 0 B/op After: BenchmarkCache-12 428282187 2.789 ns/op 0 B/op ``` * Remove `storageRESTClient.scanning`. Nonsensical - RPC clients will not have any idea about scanning. * Always fetch remote diskinfo metrics and cache them. Seems most calls are requesting metrics. * Do async fetching of usage caches.
69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
// Copyright (c) 2015-2024 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cachevalue
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import (
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"testing"
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"time"
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)
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func TestCache(t *testing.T) {
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cache := New[time.Time]()
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t.Parallel()
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cache.Once.Do(func() {
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cache.TTL = 2 * time.Second
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cache.Update = func() (time.Time, error) {
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return time.Now(), nil
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}
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})
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t1, _ := cache.Get()
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t2, _ := cache.Get()
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if !t1.Equal(t2) {
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t.Fatalf("expected time to be equal: %s != %s", t1, t2)
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}
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time.Sleep(3 * time.Second)
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t3, _ := cache.Get()
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if t1.Equal(t3) {
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t.Fatalf("expected time to be un-equal: %s == %s", t1, t3)
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}
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}
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func BenchmarkCache(b *testing.B) {
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cache := New[time.Time]()
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cache.Once.Do(func() {
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cache.TTL = 1 * time.Millisecond
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cache.Update = func() (time.Time, error) {
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return time.Now(), nil
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}
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})
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b.ReportAllocs()
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b.ResetTimer()
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b.RunParallel(func(pb *testing.PB) {
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for pb.Next() {
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cache.Get()
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}
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})
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}
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